Реализовал работу с таблицей связи на примере ученика

ElectronicDiary/ElectronicDiaryPostgresImplementation/WorkImplementation/StudentWork.cs

@@ -6,9 +6,9 @@ namespace ElectronicDiaryPostgresImplementation.WorkImplementation
 {
     public class StudentWork : IStudentWork
     {
-        private readonly SubjectWork _subjectWork;
+        private readonly ISubjectWork _subjectWork;
 
-        public StudentWork(SubjectWork subjectWork)
+        public StudentWork(ISubjectWork subjectWork)
         {
             _subjectWork = subjectWork;
         }

ElectronicDiary/ElectronicDiaryPostgresImplementation/WorkImplementation/TeacherWork.cs

@@ -6,9 +6,9 @@ namespace ElectronicDiaryPostgresImplementation.WorkImplementation
 {
     public class TeacherWork : ITeacherWork
     {
-        private readonly SubjectWork _subjectWork;
+        private readonly ISubjectWork _subjectWork;
 
-        public TeacherWork(SubjectWork subjectWork)
+        public TeacherWork(ISubjectWork subjectWork)
         {
             _subjectWork = subjectWork;
         }

ElectronicDiary/ElectronicDiaryView/ElectronicDiaryView.csproj

@@ -17,4 +17,13 @@
     <ProjectReference Include="..\ElectronicDiaryPostgresImplementation\ElectronicDiaryPostgresImplementation.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Update="FormStudent.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Update="FormGrade.cs">
+      <SubType>Form</SubType>
+    </Compile>
+  </ItemGroup>
+
 </Project>

ElectronicDiary/ElectronicDiaryView/FormGrade.Designer.cs

@@ -0,0 +1,158 @@
+namespace ElectronicDiaryView
+{
+    partial class FormGrade
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            buttonDelete = new Button();
+            buttonUpdate = new Button();
+            buttonCreate = new Button();
+            textBoxName = new TextBox();
+            label1 = new Label();
+            dataGridView = new DataGridView();
+            label2 = new Label();
+            comboBoxTeacher = new ComboBox();
+            ((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+            SuspendLayout();
+            // 
+            // buttonDelete
+            // 
+            buttonDelete.Location = new Point(741, 409);
+            buttonDelete.Name = "buttonDelete";
+            buttonDelete.Size = new Size(128, 30);
+            buttonDelete.TabIndex = 28;
+            buttonDelete.Text = "Удалить";
+            buttonDelete.UseVisualStyleBackColor = true;
+            buttonDelete.Click += ButtonDelete_Click;
+            // 
+            // buttonUpdate
+            // 
+            buttonUpdate.Location = new Point(741, 360);
+            buttonUpdate.Name = "buttonUpdate";
+            buttonUpdate.Size = new Size(128, 30);
+            buttonUpdate.TabIndex = 27;
+            buttonUpdate.Text = "Изменить";
+            buttonUpdate.UseVisualStyleBackColor = true;
+            buttonUpdate.Click += ButtonUpdate_Click;
+            // 
+            // buttonCreate
+            // 
+            buttonCreate.Location = new Point(741, 311);
+            buttonCreate.Name = "buttonCreate";
+            buttonCreate.Size = new Size(128, 30);
+            buttonCreate.TabIndex = 26;
+            buttonCreate.Text = "Добавить";
+            buttonCreate.UseVisualStyleBackColor = true;
+            buttonCreate.Click += ButtonCreate_Click;
+            // 
+            // textBoxName
+            // 
+            textBoxName.Location = new Point(746, 13);
+            textBoxName.Name = "textBoxName";
+            textBoxName.Size = new Size(232, 23);
+            textBoxName.TabIndex = 21;
+            // 
+            // label1
+            // 
+            label1.AutoSize = true;
+            label1.Location = new Point(596, 16);
+            label1.Name = "label1";
+            label1.Size = new Size(96, 15);
+            label1.TabIndex = 16;
+            label1.Text = "Наименование: ";
+            // 
+            // dataGridView
+            // 
+            dataGridView.AllowUserToAddRows = false;
+            dataGridView.AllowUserToDeleteRows = false;
+            dataGridView.BackgroundColor = SystemColors.Window;
+            dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView.Location = new Point(13, 14);
+            dataGridView.MultiSelect = false;
+            dataGridView.Name = "dataGridView";
+            dataGridView.RowTemplate.Height = 25;
+            dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
+            dataGridView.Size = new Size(568, 426);
+            dataGridView.TabIndex = 15;
+            dataGridView.CellClick += DataGridView_CellClick;
+            // 
+            // label2
+            // 
+            label2.AutoSize = true;
+            label2.Location = new Point(596, 53);
+            label2.Name = "label2";
+            label2.Size = new Size(144, 45);
+            label2.TabIndex = 29;
+            label2.Text = "Классный руководитель:\r\n\r\n\r\n";
+            // 
+            // comboBoxTeacher
+            // 
+            comboBoxTeacher.FormattingEnabled = true;
+            comboBoxTeacher.Location = new Point(746, 50);
+            comboBoxTeacher.Name = "comboBoxTeacher";
+            comboBoxTeacher.Size = new Size(232, 23);
+            comboBoxTeacher.TabIndex = 30;
+            // 
+            // FormGrade
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(990, 450);
+            Controls.Add(comboBoxTeacher);
+            Controls.Add(label2);
+            Controls.Add(buttonDelete);
+            Controls.Add(buttonUpdate);
+            Controls.Add(buttonCreate);
+            Controls.Add(textBoxName);
+            Controls.Add(label1);
+            Controls.Add(dataGridView);
+            Name = "FormGrade";
+            StartPosition = FormStartPosition.CenterScreen;
+            Text = "Классы";
+            Load += FormGrade_Load;
+            ((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private Button buttonDelete;
+        private Button buttonUpdate;
+        private Button buttonCreate;
+        private ComboBox comboBoxBodyType;
+        private TextBox textBoxSeats;
+        private TextBox textBoxYear;
+        private TextBox textBoxModel;
+        private TextBox textBoxName;
+        private Label label5;
+        private Label label1;
+        private DataGridView dataGridView;
+        private Label label2;
+        private ComboBox comboBoxTeacher;
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormGrade.cs

@@ -0,0 +1,119 @@
+using ElectronicDiaryAbstractions.Models;
+using ElectronicDiaryAbstractions.WorkAbstractions;
+
+namespace ElectronicDiaryView
+{
+    public partial class FormGrade : Form
+    {
+        private readonly IGradeWork _gradeLogic;
+
+        private readonly ITeacherWork _teacherLogic;
+
+        public FormGrade(IGradeWork gradeLogic, ITeacherWork teacherLogic)
+        {
+            InitializeComponent();
+            _gradeLogic = gradeLogic;
+            _teacherLogic = teacherLogic;
+        }
+
+        private void FormGrade_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            var grades = _gradeLogic.GetAll();
+
+            dataGridView.Rows.Clear();
+
+            if (dataGridView.ColumnCount == 0)
+            {
+                dataGridView.Columns.Add("Id", "ID");
+                dataGridView.Columns.Add("Name", "Наименование класса");
+                dataGridView.Columns.Add("TeacherId", "TeacherId");
+                dataGridView.Columns["TeacherId"].Visible = false;
+                dataGridView.Columns.Add("TeacherName", "Классный руководитель");
+            }
+
+            dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+            dataGridView.Columns["TeacherName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+
+            comboBoxTeacher.DataSource = _teacherLogic.GetAll().Select(x =>
+                new { x.Id, FullName = x.LastName + " " + x.FirstName + " " + x.Patronymic }
+                ).ToList();
+            comboBoxTeacher.DisplayMember = "FullName";
+            comboBoxTeacher.ValueMember = "Id";
+
+            foreach (var grade in grades)
+            {
+                var teacher = _teacherLogic.Get(grade.TeacherId);
+                dataGridView.Rows.Add(grade.Id, grade.Name, grade.TeacherId, teacher?.LastName + " " + teacher?.FirstName + " " + teacher?.Patronymic);
+            }
+        }
+
+        private void ButtonCreate_Click(object sender, EventArgs e)
+        {
+            Grade newGrade = new()
+            {
+                Name = textBoxName.Text,
+                TeacherId = ((dynamic)comboBoxTeacher.SelectedItem).Id,
+            };
+
+            _gradeLogic.Create(newGrade);
+
+            LoadData();
+        }
+
+        private void ButtonUpdate_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int gradeId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                Grade updatedGrade = new()
+                {
+                    Id = gradeId,
+                    Name = textBoxName.Text,
+                    TeacherId = ((dynamic)comboBoxTeacher.SelectedItem).Id,
+                };
+
+                _gradeLogic.Update(updatedGrade);
+
+                LoadData();
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите класс, который необходимо обновить");
+            }
+        }
+
+        private void ButtonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int gradeId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                _gradeLogic.Delete(gradeId);
+
+                LoadData();
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите класс, который необходимо удалить");
+            }
+        }
+
+        private void DataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
+        {
+            if (e.RowIndex >= 0)
+            {
+                DataGridViewRow row = dataGridView.Rows[e.RowIndex];
+                textBoxName.Text = row.Cells["Name"].Value.ToString();
+                comboBoxTeacher.SelectedValue = Convert.ToInt32(row.Cells["TeacherId"].Value);
+            }
+        }
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormGrade.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ElectronicDiary/ElectronicDiaryView/FormMain.Designer.cs

@@ -30,13 +30,11 @@
         {
             menuStrip1 = new MenuStrip();
             справочникиToolStripMenuItem = new ToolStripMenuItem();
-            предметToolStripMenuItem = new ToolStripMenuItem();
+            предметыToolStripMenuItem = new ToolStripMenuItem();
-            carToolStripMenuItem = new ToolStripMenuItem();
+            классыToolStripMenuItem = new ToolStripMenuItem();
-            branchToolStripMenuItem = new ToolStripMenuItem();
-            clientToolStripMenuItem = new ToolStripMenuItem();
-            rentalToolStripMenuItem = new ToolStripMenuItem();
             замерВремениToolStripMenuItem = new ToolStripMenuItem();
             textBoxTest = new TextBox();
+            ученикиToolStripMenuItem = new ToolStripMenuItem();
             menuStrip1.SuspendLayout();
             SuspendLayout();
             // 
@@ -51,41 +49,24 @@
             // 
             // справочникиToolStripMenuItem
             // 
-            справочникиToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { предметToolStripMenuItem, carToolStripMenuItem, branchToolStripMenuItem, clientToolStripMenuItem, rentalToolStripMenuItem });
+            справочникиToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { предметыToolStripMenuItem, классыToolStripMenuItem, ученикиToolStripMenuItem });
             справочникиToolStripMenuItem.Name = "справочникиToolStripMenuItem";
             справочникиToolStripMenuItem.Size = new Size(94, 20);
             справочникиToolStripMenuItem.Text = "Справочники";
             // 
-            // предметToolStripMenuItem
+            // предметыToolStripMenuItem
             // 
-            предметToolStripMenuItem.Name = "предметToolStripMenuItem";
+            предметыToolStripMenuItem.Name = "предметыToolStripMenuItem";
-            предметToolStripMenuItem.Size = new Size(122, 22);
+            предметыToolStripMenuItem.Size = new Size(180, 22);
-            предметToolStripMenuItem.Text = "Предмет";
+            предметыToolStripMenuItem.Text = "Предметы";
-            предметToolStripMenuItem.Click += ПредметToolStripMenuItem_Click;
+            предметыToolStripMenuItem.Click += ПредметыToolStripMenuItem_Click;
             // 
-            // carToolStripMenuItem
+            // классыToolStripMenuItem
             // 
-            carToolStripMenuItem.Name = "carToolStripMenuItem";
+            классыToolStripMenuItem.Name = "классыToolStripMenuItem";
-            carToolStripMenuItem.Size = new Size(122, 22);
+            классыToolStripMenuItem.Size = new Size(180, 22);
-            carToolStripMenuItem.Text = "car";
+            классыToolStripMenuItem.Text = "Классы";
-            // 
+            классыToolStripMenuItem.Click += КлассыToolStripMenuItem_Click;
-            // branchToolStripMenuItem
-            // 
-            branchToolStripMenuItem.Name = "branchToolStripMenuItem";
-            branchToolStripMenuItem.Size = new Size(122, 22);
-            branchToolStripMenuItem.Text = "branch";
-            // 
-            // clientToolStripMenuItem
-            // 
-            clientToolStripMenuItem.Name = "clientToolStripMenuItem";
-            clientToolStripMenuItem.Size = new Size(122, 22);
-            clientToolStripMenuItem.Text = "client";
-            // 
-            // rentalToolStripMenuItem
-            // 
-            rentalToolStripMenuItem.Name = "rentalToolStripMenuItem";
-            rentalToolStripMenuItem.Size = new Size(122, 22);
-            rentalToolStripMenuItem.Text = "rental";
             // 
             // замерВремениToolStripMenuItem
             // 
@@ -104,6 +85,13 @@
             textBoxTest.Size = new Size(296, 85);
             textBoxTest.TabIndex = 2;
             // 
+            // ученикиToolStripMenuItem
+            // 
+            ученикиToolStripMenuItem.Name = "ученикиToolStripMenuItem";
+            ученикиToolStripMenuItem.Size = new Size(180, 22);
+            ученикиToolStripMenuItem.Text = "Ученики";
+            ученикиToolStripMenuItem.Click += УченикиToolStripMenuItem_Click;
+            // 
             // FormMain
             // 
             AutoScaleDimensions = new SizeF(7F, 15F);
@@ -125,12 +113,10 @@
 
         private MenuStrip menuStrip1;
         private ToolStripMenuItem справочникиToolStripMenuItem;
-        private ToolStripMenuItem предметToolStripMenuItem;
+        private ToolStripMenuItem предметыToolStripMenuItem;
-        private ToolStripMenuItem carToolStripMenuItem;
-        private ToolStripMenuItem branchToolStripMenuItem;
-        private ToolStripMenuItem clientToolStripMenuItem;
-        private ToolStripMenuItem rentalToolStripMenuItem;
         private TextBox textBoxTest;
         private ToolStripMenuItem замерВремениToolStripMenuItem;
+        private ToolStripMenuItem классыToolStripMenuItem;
+        private ToolStripMenuItem ученикиToolStripMenuItem;
     }
 }

ElectronicDiary/ElectronicDiaryView/FormMain.cs

@@ -10,7 +10,7 @@ namespace ElectronicDiaryView
             InitializeComponent();
         }
 
-        private void ПредметToolStripMenuItem_Click(object sender, EventArgs e)
+        private void ПредметыToolStripMenuItem_Click(object sender, EventArgs e)
         {
             var service = Program.ServiceProvider?.GetService(typeof(FormSubject));
             if (service is FormSubject form)
@@ -19,6 +19,24 @@ namespace ElectronicDiaryView
             }
         }
 
+        private void КлассыToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormGrade));
+            if (service is FormGrade form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void УченикиToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormStudent));
+            if (service is FormStudent form)
+            {
+                form.ShowDialog();
+            }
+        }
+
         private void ЗамерВремениToolStripMenuItem_Click(object sender, EventArgs e)
         {
             var service = Program.ServiceProvider?.GetService(typeof(ISubjectWork));
@@ -28,7 +46,7 @@ namespace ElectronicDiaryView
                 int id = subjects.Last().Id;
 
                 DateTime startTime = DateTime.Now;
-                subjectWork.Delete(id); 
+                subjectWork.Delete(id);
                 DateTime endTime = DateTime.Now;
 
                 textBoxTest.Text = $"Время выполнения запроса: {(endTime - startTime).TotalMilliseconds} миллисекунд";

ElectronicDiary/ElectronicDiaryView/FormStudent.Designer.cs

@@ -0,0 +1,277 @@
+namespace ElectronicDiaryView
+{
+    partial class FormStudent
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            buttonDelete = new Button();
+            buttonUpdate = new Button();
+            buttonCreate = new Button();
+            textBoxLastName = new TextBox();
+            label1 = new Label();
+            dataGridView = new DataGridView();
+            label2 = new Label();
+            comboBoxGrade = new ComboBox();
+            textBoxFirstName = new TextBox();
+            label3 = new Label();
+            textBoxPatronymic = new TextBox();
+            labelPatronymic = new Label();
+            buttonGetSubjects = new Button();
+            buttonDeleteSubjects = new Button();
+            comboBoxSubject = new ComboBox();
+            label4 = new Label();
+            buttonAddSubject = new Button();
+            buttonDeleteSubject = new Button();
+            ((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+            SuspendLayout();
+            // 
+            // buttonDelete
+            // 
+            buttonDelete.Location = new Point(802, 305);
+            buttonDelete.Name = "buttonDelete";
+            buttonDelete.Size = new Size(128, 30);
+            buttonDelete.TabIndex = 28;
+            buttonDelete.Text = "Удалить";
+            buttonDelete.UseVisualStyleBackColor = true;
+            buttonDelete.Click += ButtonDelete_Click;
+            // 
+            // buttonUpdate
+            // 
+            buttonUpdate.Location = new Point(802, 256);
+            buttonUpdate.Name = "buttonUpdate";
+            buttonUpdate.Size = new Size(128, 30);
+            buttonUpdate.TabIndex = 27;
+            buttonUpdate.Text = "Изменить";
+            buttonUpdate.UseVisualStyleBackColor = true;
+            buttonUpdate.Click += ButtonUpdate_Click;
+            // 
+            // buttonCreate
+            // 
+            buttonCreate.Location = new Point(802, 207);
+            buttonCreate.Name = "buttonCreate";
+            buttonCreate.Size = new Size(128, 30);
+            buttonCreate.TabIndex = 26;
+            buttonCreate.Text = "Добавить";
+            buttonCreate.UseVisualStyleBackColor = true;
+            buttonCreate.Click += ButtonCreate_Click;
+            // 
+            // textBoxLastName
+            // 
+            textBoxLastName.Location = new Point(798, 10);
+            textBoxLastName.Name = "textBoxLastName";
+            textBoxLastName.Size = new Size(201, 23);
+            textBoxLastName.TabIndex = 21;
+            // 
+            // label1
+            // 
+            label1.AutoSize = true;
+            label1.Location = new Point(725, 13);
+            label1.Name = "label1";
+            label1.Size = new Size(64, 15);
+            label1.TabIndex = 16;
+            label1.Text = "Фамилия: ";
+            // 
+            // dataGridView
+            // 
+            dataGridView.AllowUserToAddRows = false;
+            dataGridView.AllowUserToDeleteRows = false;
+            dataGridView.BackgroundColor = SystemColors.Window;
+            dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView.Location = new Point(13, 14);
+            dataGridView.MultiSelect = false;
+            dataGridView.Name = "dataGridView";
+            dataGridView.RowTemplate.Height = 25;
+            dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
+            dataGridView.Size = new Size(687, 608);
+            dataGridView.TabIndex = 15;
+            dataGridView.CellClick += DataGridView_CellClick;
+            // 
+            // label2
+            // 
+            label2.AutoSize = true;
+            label2.Location = new Point(725, 142);
+            label2.Name = "label2";
+            label2.Size = new Size(42, 15);
+            label2.TabIndex = 29;
+            label2.Text = "Класс:";
+            // 
+            // comboBoxGrade
+            // 
+            comboBoxGrade.FormattingEnabled = true;
+            comboBoxGrade.Location = new Point(802, 139);
+            comboBoxGrade.Name = "comboBoxGrade";
+            comboBoxGrade.Size = new Size(197, 23);
+            comboBoxGrade.TabIndex = 30;
+            // 
+            // textBoxFirstName
+            // 
+            textBoxFirstName.Location = new Point(800, 53);
+            textBoxFirstName.Name = "textBoxFirstName";
+            textBoxFirstName.Size = new Size(199, 23);
+            textBoxFirstName.TabIndex = 32;
+            // 
+            // label3
+            // 
+            label3.AutoSize = true;
+            label3.Location = new Point(725, 56);
+            label3.Name = "label3";
+            label3.Size = new Size(37, 15);
+            label3.TabIndex = 31;
+            label3.Text = "Имя: ";
+            // 
+            // textBoxPatronymic
+            // 
+            textBoxPatronymic.Location = new Point(802, 96);
+            textBoxPatronymic.Name = "textBoxPatronymic";
+            textBoxPatronymic.Size = new Size(197, 23);
+            textBoxPatronymic.TabIndex = 34;
+            // 
+            // labelPatronymic
+            // 
+            labelPatronymic.AutoSize = true;
+            labelPatronymic.Location = new Point(725, 99);
+            labelPatronymic.Name = "labelPatronymic";
+            labelPatronymic.Size = new Size(64, 15);
+            labelPatronymic.TabIndex = 33;
+            labelPatronymic.Text = "Отчество: ";
+            // 
+            // buttonGetSubjects
+            // 
+            buttonGetSubjects.Location = new Point(802, 421);
+            buttonGetSubjects.Name = "buttonGetSubjects";
+            buttonGetSubjects.Size = new Size(128, 30);
+            buttonGetSubjects.TabIndex = 35;
+            buttonGetSubjects.Text = "Предметы ученика";
+            buttonGetSubjects.UseVisualStyleBackColor = true;
+            buttonGetSubjects.Click += ButtonGetSubjects_Click;
+            // 
+            // buttonDeleteSubjects
+            // 
+            buttonDeleteSubjects.Location = new Point(802, 571);
+            buttonDeleteSubjects.Name = "buttonDeleteSubjects";
+            buttonDeleteSubjects.Size = new Size(128, 46);
+            buttonDeleteSubjects.TabIndex = 36;
+            buttonDeleteSubjects.Text = "Удалить все предметы";
+            buttonDeleteSubjects.UseVisualStyleBackColor = true;
+            buttonDeleteSubjects.Click += ButtonDeleteSubjects_Click;
+            // 
+            // comboBoxSubject
+            // 
+            comboBoxSubject.FormattingEnabled = true;
+            comboBoxSubject.Location = new Point(808, 380);
+            comboBoxSubject.Name = "comboBoxSubject";
+            comboBoxSubject.Size = new Size(197, 23);
+            comboBoxSubject.TabIndex = 38;
+            // 
+            // label4
+            // 
+            label4.AutoSize = true;
+            label4.Location = new Point(731, 383);
+            label4.Name = "label4";
+            label4.Size = new Size(58, 15);
+            label4.TabIndex = 37;
+            label4.Text = "Предмет:";
+            // 
+            // buttonAddSubject
+            // 
+            buttonAddSubject.Location = new Point(802, 471);
+            buttonAddSubject.Name = "buttonAddSubject";
+            buttonAddSubject.Size = new Size(128, 30);
+            buttonAddSubject.TabIndex = 39;
+            buttonAddSubject.Text = "Добавить предмет";
+            buttonAddSubject.UseVisualStyleBackColor = true;
+            buttonAddSubject.Click += ButtonAddSubject_Click;
+            // 
+            // buttonDeleteSubject
+            // 
+            buttonDeleteSubject.Location = new Point(802, 521);
+            buttonDeleteSubject.Name = "buttonDeleteSubject";
+            buttonDeleteSubject.Size = new Size(128, 30);
+            buttonDeleteSubject.TabIndex = 40;
+            buttonDeleteSubject.Text = "Удалить предмет";
+            buttonDeleteSubject.UseVisualStyleBackColor = true;
+            buttonDeleteSubject.Click += ButtonDeleteSubject_Click;
+            // 
+            // FormStudent
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(1014, 634);
+            Controls.Add(buttonDeleteSubject);
+            Controls.Add(buttonAddSubject);
+            Controls.Add(comboBoxSubject);
+            Controls.Add(label4);
+            Controls.Add(buttonDeleteSubjects);
+            Controls.Add(buttonGetSubjects);
+            Controls.Add(textBoxPatronymic);
+            Controls.Add(labelPatronymic);
+            Controls.Add(textBoxFirstName);
+            Controls.Add(label3);
+            Controls.Add(comboBoxGrade);
+            Controls.Add(label2);
+            Controls.Add(buttonDelete);
+            Controls.Add(buttonUpdate);
+            Controls.Add(buttonCreate);
+            Controls.Add(textBoxLastName);
+            Controls.Add(label1);
+            Controls.Add(dataGridView);
+            Name = "FormStudent";
+            StartPosition = FormStartPosition.CenterScreen;
+            Text = "Ученики";
+            Load += FormGrade_Load;
+            ((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private Button buttonDelete;
+        private Button buttonUpdate;
+        private Button buttonCreate;
+        private ComboBox comboBoxBodyType;
+        private TextBox textBoxSeats;
+        private TextBox textBoxYear;
+        private TextBox textBoxModel;
+        private TextBox textBoxLastName;
+        private Label label5;
+        private Label label1;
+        private DataGridView dataGridView;
+        private Label label2;
+        private ComboBox comboBoxGrade;
+        private TextBox textBoxFirstName;
+        private Label label3;
+        private TextBox textBoxPatronymic;
+        private Label labelPatronymic;
+        private Button buttonGetSubjects;
+        private Button buttonDeleteSubjects;
+        private ComboBox comboBoxSubject;
+        private Label label4;
+        private Button buttonAddSubject;
+        private Button buttonDeleteSubject;
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormStudent.cs

@@ -0,0 +1,216 @@
+using ElectronicDiaryAbstractions.Models;
+using ElectronicDiaryAbstractions.WorkAbstractions;
+
+namespace ElectronicDiaryView
+{
+    public partial class FormStudent : Form
+    {
+        private readonly IStudentWork _studentLogic;
+
+        private readonly IGradeWork _gradeLogic;
+
+        private readonly IUserWork _userLogic;
+
+        private readonly ISubjectWork _subjectLogic;
+
+        public FormStudent(IStudentWork studentLogic, IGradeWork gradeLogic, IUserWork userLogic, ISubjectWork subjectLogic)
+        {
+            InitializeComponent();
+            _studentLogic = studentLogic;
+            _gradeLogic = gradeLogic;
+            _userLogic = userLogic;
+            _subjectLogic = subjectLogic;
+        }
+
+        private void FormGrade_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            var students = _studentLogic.GetAll();
+
+            dataGridView.Rows.Clear();
+
+            if (dataGridView.ColumnCount == 0)
+            {
+                dataGridView.Columns.Add("Id", "ID");
+                dataGridView.Columns.Add("Name", "Имя ученика");
+                dataGridView.Columns.Add("GradeId", "GradeId");
+                dataGridView.Columns["GradeId"].Visible = false;
+                dataGridView.Columns.Add("Grade", "Класс");
+                dataGridView.Columns.Add("UserId", "UserId");
+                dataGridView.Columns["UserId"].Visible = false;
+                dataGridView.Columns.Add("UserLogin", "Логин");
+            }
+
+            dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+            dataGridView.Columns["Grade"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+            dataGridView.Columns["UserLogin"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+
+            comboBoxGrade.DataSource = _gradeLogic.GetAll();
+            comboBoxGrade.DisplayMember = "Name";
+            comboBoxGrade.ValueMember = "Id";
+
+            comboBoxSubject.DataSource = _subjectLogic.GetAll();
+            comboBoxSubject.DisplayMember = "Name";
+            comboBoxSubject.ValueMember = "Id";
+
+            foreach (var student in students)
+            {
+                dataGridView.Rows.Add(student.Id, student.LastName + " " + student.FirstName + " " + student.Patronymic, student.GradeId, 
+                    _gradeLogic.Get(student.GradeId)?.Name, student.UserId, _userLogic.Get(student.UserId)?.Login);
+            }
+        }
+
+        private void ButtonCreate_Click(object sender, EventArgs e)
+        {
+            int someNumber = _userLogic.GetAll().Max(user => user.Id) + 1;
+            User newUser = new()
+            {
+                Login = "login" + someNumber,
+                Email = "email" + someNumber,
+                Password = "password" + someNumber,
+                PhoneNumber = "phonenumber" + someNumber,
+                AccessLevel = "student",
+            };
+            _userLogic.Create(newUser);
+            int newUserId = _userLogic.GetAll().Max(user => user.Id);
+
+            Student newStudent = new()
+            {
+                LastName = textBoxLastName.Text,
+                FirstName = textBoxFirstName.Text,
+                Patronymic = textBoxPatronymic.Text,
+                GradeId = ((Grade)comboBoxGrade.SelectedItem).Id,
+                UserId = newUserId,
+            };
+
+            _studentLogic.Create(newStudent);
+
+            LoadData();
+        }
+
+        private void ButtonUpdate_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int studentId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                Student updatedStudent = new()
+                {
+                    Id = studentId,
+                    LastName = textBoxLastName.Text,
+                    FirstName = textBoxFirstName.Text,
+                    Patronymic = textBoxPatronymic.Text,
+                    GradeId = ((Grade)comboBoxGrade.SelectedItem).Id,
+                };
+
+                _studentLogic.Update(updatedStudent);
+
+                LoadData();
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, информацию о котором необходимо обновить");
+            }
+        }
+
+        private void ButtonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int studentId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                _studentLogic.Delete(studentId);
+
+                LoadData();
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, информацию о котором необходимо удалить");
+            }
+        }
+
+        private void ButtonGetSubjects_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormSubjects));
+                if (service is FormSubjects form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    form.IsStudent = true;
+                    form.ShowDialog();
+                }
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, информацию о предметах которого необходимо посмотреть");
+            }
+        }
+
+        private void ButtonAddSubject_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int studentId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                _studentLogic.AddStudentSubject(studentId, ((Subject)comboBoxSubject.SelectedItem).Id);
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, с которым необходимо связать предмет");
+            }
+        }
+
+        private void ButtonDeleteSubject_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int studentId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                _studentLogic.DeleteStudentSubject(studentId, ((Subject)comboBoxSubject.SelectedItem).Id);
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, от которого необходимо отвязать предмет");
+            }
+        }
+
+        private void ButtonDeleteSubjects_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count > 0)
+            {
+                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
+                int studentId = Convert.ToInt32(selectedRow.Cells["Id"].Value);
+
+                _studentLogic.DeleteAllStudentSubjects(studentId);
+
+                LoadData();
+            }
+            else
+            {
+                MessageBox.Show("Пожалуйста, выберите ученика, информацию о предметах которого необходимо удалить");
+            }
+        }
+
+        private void DataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
+        {
+            if (e.RowIndex >= 0)
+            {
+                DataGridViewRow row = dataGridView.Rows[e.RowIndex];
+                string[] nameParts = (row != null && row.Cells["Name"] != null) ? row.Cells["Name"].Value.ToString().Split(' ') : new string[] { "", "", "" };
+                textBoxLastName.Text = nameParts[0];
+                textBoxFirstName.Text = nameParts[1];
+                textBoxPatronymic.Text = nameParts[2];
+                comboBoxGrade.SelectedValue = Convert.ToInt32(row.Cells["GradeId"].Value);
+            }
+        }
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormStudent.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ElectronicDiary/ElectronicDiaryView/FormSubjects.Designer.cs

@@ -0,0 +1,67 @@
+namespace ElectronicDiaryView
+{
+    partial class FormSubjects
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            dataGridView = new DataGridView();
+            ((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+            SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            dataGridView.AllowUserToAddRows = false;
+            dataGridView.AllowUserToDeleteRows = false;
+            dataGridView.BackgroundColor = SystemColors.Window;
+            dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView.Location = new Point(1, 0);
+            dataGridView.MultiSelect = false;
+            dataGridView.Name = "dataGridView";
+            dataGridView.RowTemplate.Height = 25;
+            dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
+            dataGridView.Size = new Size(568, 514);
+            dataGridView.TabIndex = 16;
+            // 
+            // FormSubjects
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(571, 516);
+            Controls.Add(dataGridView);
+            Name = "FormSubjects";
+            StartPosition = FormStartPosition.CenterScreen;
+            Text = "Предметы";
+            Load += FormSubjects_Load;
+            ((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormSubjects.cs

@@ -0,0 +1,56 @@
+using ElectronicDiaryAbstractions.WorkAbstractions;
+
+namespace ElectronicDiaryView
+{
+    public partial class FormSubjects : Form
+    {
+        private readonly IStudentWork _studentLogic;
+        private readonly ITeacherWork _teacherLogic;
+
+        private int? _id;
+
+        public int Id { set { _id = value; } }
+
+        private bool _isStudent;
+
+        public bool IsStudent { set { _isStudent = value; } }
+
+        public FormSubjects(IStudentWork studentLogic, ITeacherWork teacherLogic)
+        {
+            InitializeComponent();
+            _studentLogic = studentLogic;
+            _teacherLogic = teacherLogic;
+        }
+
+        private void FormSubjects_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var list = _isStudent ? _studentLogic.GetAllStudentSubjects((int)_id) : _teacherLogic.GetAllTeacherSubjects((int)_id);
+                    
+                    dataGridView.Rows.Clear();
+
+                    if (dataGridView.ColumnCount == 0)
+                    {
+                        dataGridView.Columns.Add("Id", "ID");
+                        dataGridView.Columns.Add("Name", "Название предмета");
+                    }
+
+                    dataGridView.Columns["Id"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+
+                    foreach (var subject in list)
+                    {
+                        dataGridView.Rows.Add(subject.Id, subject.Name);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+        }
+    }
+}

ElectronicDiary/ElectronicDiaryView/FormSubjects.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ElectronicDiary/ElectronicDiaryView/Program.cs

@@ -24,9 +24,20 @@ namespace ElectronicDiaryView
         }
         private static void ConfigureServices(ServiceCollection services)
         {
+            services.AddTransient<IGradeWork, GradeWork>();
+            services.AddTransient<IHomeworkWork, HomeworkWork>();
+            services.AddTransient<ILessonWork, LessonWork>();
+            services.AddTransient<IMarkWork, MarkWork>();
+            services.AddTransient<IStudentWork, StudentWork>();
+            services.AddTransient<IStudyAreaWork, StudyAreaWork>();
             services.AddTransient<ISubjectWork, SubjectWork>();
+            services.AddTransient<ITeacherWork, TeacherWork>();
+            services.AddTransient<IUserWork, UserWork>();
             services.AddTransient<FormMain>();
+            services.AddTransient<FormGrade>();
+            services.AddTransient<FormStudent>();
             services.AddTransient<FormSubject>();
+            services.AddTransient<FormSubjects>();
         }
     }
 }