+ еще одна сущность, но дефолтные значения почему-то не работают

+ фиксы всякие разные

DepartmentStaffView/DepartmentStaffDatabase/Abstracts.cs

@@ -24,13 +24,13 @@ namespace DepartmentStaffDatabase
         public abstract List<Position> GetPositions();
         public abstract void Deletepositions();
 
-        //public abstract void CreateEmployee(Employee employee);
+        public abstract void CreateEmployee(Employee employee);
-        //public abstract void UpdateEmployee(Employee employee);
+        public abstract void UpdateEmployee(Employee employee);
-        //public abstract void DeleteEmployee(int id);
+        public abstract void DeleteEmployee(int id);
-        //public abstract Employee GetEmployee(int id);
+        public abstract Employee GetEmployee(int id);
-        //public abstract Employee GetEmployee(string employeeName);
+        public abstract Employee GetEmployee(string employeeName);
-        //public abstract List<Employee> GetEmployees();
+        public abstract List<Employee> GetEmployees();
-        //public abstract void DeleteEmployees();
+        public abstract void DeleteEmployees();
 
         //public abstract void CreateContract(Contract contract);
         //public abstract void UpdateContract(Contract contract);

DepartmentStaffView/DepartmentStaffDatabase/Implements.cs

@@ -196,34 +196,112 @@ namespace DepartmentStaffDatabase
 
         //=======================================================================
 
-        //public override void CreateEmployee(Employee employee)
+        public override void CreateEmployee(Employee employee)
-        //{
+        {
-        //    using var conn = GetConnect();
+            using var conn = GetConnect();
-        //    conn.Open();
+            conn.Open();
-        //    using var cmd = new NpgsqlCommand
+            using var cmd = new NpgsqlCommand
-        //        ("INSERT INTO employee VALUES (nextval('Employee_seq'), @Name, @Birthdate, @Address, @PhoneNumber, @Email, @PositionId)", conn);
+                ("INSERT INTO employee VALUES (nextval('Employee_seq'), @Name, @Birthdate, @Address, @PhoneNumber, @Email, @PositionId)", conn);
-        //    cmd.Parameters.AddWithValue("@name", employee.EmployeeName);
+            cmd.Parameters.AddWithValue("@name", employee.EmployeeName);
-        //    cmd.Parameters.AddWithValue("@Birthdate", employee.Birthdate);
+            cmd.Parameters.AddWithValue("@Birthdate", employee.Birthdate);
-        //    cmd.Parameters.AddWithValue("@Address", employee.Address);
+            cmd.Parameters.AddWithValue("@Address", employee.Address);
-        //    cmd.Parameters.AddWithValue("@PhoneNumber", employee.PhoneNumber);
+            cmd.Parameters.AddWithValue("@PhoneNumber", employee.PhoneNumber);
-        //    cmd.Parameters.AddWithValue("@Email", employee.Email);
+            cmd.Parameters.AddWithValue("@Email", employee.Email);
-        //    cmd.Parameters.AddWithValue("@PositionId", employee.PositionId);
+            cmd.Parameters.AddWithValue("@PositionId", employee.PositionId);
-        //    cmd.ExecuteNonQuery();
+            cmd.ExecuteNonQuery();
-        //}
+        }
-        //public override void UpdateEmployee(Employee employee)
+        public override void UpdateEmployee(Employee employee)
-        //{
+        {
-        //    using var conn = GetConnect();
+            using var conn = GetConnect();
-        //    conn.Open();
+            conn.Open();
-        //    using var cmd = new NpgsqlCommand($"UPDATE employee SET name = @name, salary = @salary, departmentId = @departmentId WHERE id = @Id", conn);
+            using var cmd = new NpgsqlCommand($"UPDATE employee SET name = @name, birthdate = @birthdate, " +
-        //    cmd.Parameters.AddWithValue("@name", position.PositionName);
+                $"address = @address, phoneNumber = @phoneNumber, email = @email, positionId = @positionId WHERE id = @Id", conn);
-        //    cmd.Parameters.AddWithValue("@salary", position.Salary);
+            cmd.Parameters.AddWithValue("@name", employee.EmployeeName);
-        //    cmd.Parameters.AddWithValue("@departmentId", position.DepartmentId);
+            cmd.Parameters.AddWithValue("@Birthdate", employee.Birthdate);
-        //    cmd.ExecuteNonQuery();
+            cmd.Parameters.AddWithValue("@Address", employee.Address);
-        //}
+            cmd.Parameters.AddWithValue("@PhoneNumber", employee.PhoneNumber);
-        //public override void DeleteEmployee(int id);
+            cmd.Parameters.AddWithValue("@Email", employee.Email);
-        //public override Employee GetEmployee(int id);
+            cmd.Parameters.AddWithValue("@PositionId", employee.PositionId);
-        //public override Employee GetEmployee(string employeeName);
+            cmd.ExecuteNonQuery();
-        //public override List<Employee> GetEmployees();
+        }
-        //public override void DeleteEmployees();
+        public override void DeleteEmployee(int id)
+        {
+            using var conn = GetConnect();
+            conn.Open();
+            using var cmd = new NpgsqlCommand($"DELETE FROM employee WHERE id = @Id", conn);
+            cmd.Parameters.AddWithValue("@Id", id);
+            cmd.ExecuteNonQuery();
+        }
+        public override Employee GetEmployee(int id)
+        {
+            using var conn = GetConnect();
+            conn.Open();
+            using var cmd = new NpgsqlCommand($"SELECT * FROM employee WHERE id = {id}", conn);
+            using var reader = cmd.ExecuteReader();
+            if (reader.Read())
+            {
+                return new Employee
+                {
+                    Id = reader.GetInt32(0),
+                    EmployeeName = reader.GetString(1),
+                    Birthdate = reader.GetDateTime(2),
+                    Address = reader.GetString(3),
+                    PhoneNumber = reader.GetString(4),
+                    Email = reader.GetString(5),
+                    PositionId = reader.GetInt32(6),
+                };
+            }
+            return null;
+        }
+        public override Employee GetEmployee(string employeeName)
+        {
+            using var conn = GetConnect();
+            conn.Open();
+            using var cmd = new NpgsqlCommand($"SELECT * FROM employee WHERE id = {employeeName}", conn);
+            using var reader = cmd.ExecuteReader();
+            if (reader.Read())
+            {
+                return new Employee
+                {
+                    Id = reader.GetInt32(0),
+                    EmployeeName = reader.GetString(1),
+                    Birthdate = reader.GetDateTime(2),
+                    Address = reader.GetString(3),
+                    PhoneNumber = reader.GetString(4),
+                    Email = reader.GetString(5),
+                    PositionId = reader.GetInt32(6),
+                };
+            }
+            return null;
+        }
+        public override List<Employee> GetEmployees()
+        {
+            List<Employee> employees = new List<Employee>();
+            using var conn = GetConnect();
+            conn.Open();
+            using var cmd = new NpgsqlCommand("SELECT * FROM employee", conn);
+            using var reader = cmd.ExecuteReader();
+            while (reader.Read())
+            {
+                employees.Add(new Employee
+                {
+                    Id = reader.GetInt32(0),
+                    EmployeeName = reader.GetString(1),
+                    Birthdate = reader.GetDateTime(2),
+                    Address = reader.GetString(3),
+                    PhoneNumber = reader.GetString(4),
+                    Email = reader.GetString(5),
+                    PositionId = reader.GetInt32(6),
+                });
+            }
+            return employees;
+        }
+        public override void DeleteEmployees()
+        {
+            using var conn = GetConnect();
+            conn.Open();
+            using var cmd = new NpgsqlCommand($"DELETE FROM employee", conn);
+            cmd.ExecuteNonQuery();
+        }
     }
 }

DepartmentStaffView/DepartmentStaffView/FormEmployee.Designer.cs

@@ -0,0 +1,214 @@
+namespace DepartmentStaffView
+{
+    partial class FormEmployee
+    {
+        /// <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()
+        {
+            textBoxEmail = new TextBox();
+            label4 = new Label();
+            textBoxName = new TextBox();
+            label2 = new Label();
+            buttonCancel = new Button();
+            buttonSave = new Button();
+            label1 = new Label();
+            comboBoxPosition = new ComboBox();
+            label3 = new Label();
+            dateTimePicker1 = new DateTimePicker();
+            textBoxAddress = new TextBox();
+            label5 = new Label();
+            textBoxPhone = new TextBox();
+            label6 = new Label();
+            SuspendLayout();
+            // 
+            // textBoxEmail
+            // 
+            textBoxEmail.Location = new Point(151, 194);
+            textBoxEmail.Margin = new Padding(3, 2, 3, 2);
+            textBoxEmail.Name = "textBoxEmail";
+            textBoxEmail.Size = new Size(268, 23);
+            textBoxEmail.TabIndex = 28;
+            // 
+            // label4
+            // 
+            label4.AutoSize = true;
+            label4.Location = new Point(12, 197);
+            label4.Name = "label4";
+            label4.Size = new Size(59, 15);
+            label4.TabIndex = 27;
+            label4.Text = "Эл. почта";
+            // 
+            // textBoxName
+            // 
+            textBoxName.Location = new Point(151, 44);
+            textBoxName.Margin = new Padding(3, 2, 3, 2);
+            textBoxName.Name = "textBoxName";
+            textBoxName.Size = new Size(268, 23);
+            textBoxName.TabIndex = 26;
+            // 
+            // label2
+            // 
+            label2.AutoSize = true;
+            label2.Location = new Point(12, 47);
+            label2.Name = "label2";
+            label2.Size = new Size(97, 15);
+            label2.TabIndex = 25;
+            label2.Text = "Имя сотрудника";
+            // 
+            // buttonCancel
+            // 
+            buttonCancel.Location = new Point(336, 237);
+            buttonCancel.Margin = new Padding(3, 2, 3, 2);
+            buttonCancel.Name = "buttonCancel";
+            buttonCancel.Size = new Size(82, 22);
+            buttonCancel.TabIndex = 24;
+            buttonCancel.Text = "Отмена";
+            buttonCancel.UseVisualStyleBackColor = true;
+            buttonCancel.Click += buttonCancel_Click;
+            // 
+            // buttonSave
+            // 
+            buttonSave.Location = new Point(219, 237);
+            buttonSave.Margin = new Padding(3, 2, 3, 2);
+            buttonSave.Name = "buttonSave";
+            buttonSave.Size = new Size(82, 22);
+            buttonSave.TabIndex = 23;
+            buttonSave.Text = "Сохранить";
+            buttonSave.UseVisualStyleBackColor = true;
+            buttonSave.Click += buttonSave_Click;
+            // 
+            // label1
+            // 
+            label1.AutoSize = true;
+            label1.Location = new Point(12, 9);
+            label1.Name = "label1";
+            label1.Size = new Size(69, 15);
+            label1.TabIndex = 22;
+            label1.Text = "Должность";
+            // 
+            // comboBoxPosition
+            // 
+            comboBoxPosition.FormattingEnabled = true;
+            comboBoxPosition.Location = new Point(151, 7);
+            comboBoxPosition.Margin = new Padding(3, 2, 3, 2);
+            comboBoxPosition.Name = "comboBoxPosition";
+            comboBoxPosition.Size = new Size(268, 23);
+            comboBoxPosition.TabIndex = 21;
+            // 
+            // label3
+            // 
+            label3.AutoSize = true;
+            label3.Location = new Point(12, 85);
+            label3.Name = "label3";
+            label3.Size = new Size(90, 15);
+            label3.TabIndex = 29;
+            label3.Text = "Дата рождения";
+            // 
+            // dateTimePicker1
+            // 
+            dateTimePicker1.Location = new Point(151, 79);
+            dateTimePicker1.Name = "dateTimePicker1";
+            dateTimePicker1.Size = new Size(200, 23);
+            dateTimePicker1.TabIndex = 30;
+            // 
+            // textBoxAddress
+            // 
+            textBoxAddress.Location = new Point(151, 116);
+            textBoxAddress.Margin = new Padding(3, 2, 3, 2);
+            textBoxAddress.Name = "textBoxAddress";
+            textBoxAddress.Size = new Size(268, 23);
+            textBoxAddress.TabIndex = 32;
+            // 
+            // label5
+            // 
+            label5.AutoSize = true;
+            label5.Location = new Point(12, 119);
+            label5.Name = "label5";
+            label5.Size = new Size(40, 15);
+            label5.TabIndex = 31;
+            label5.Text = "Адрес";
+            // 
+            // textBoxPhone
+            // 
+            textBoxPhone.Location = new Point(151, 156);
+            textBoxPhone.Margin = new Padding(3, 2, 3, 2);
+            textBoxPhone.Name = "textBoxPhone";
+            textBoxPhone.Size = new Size(268, 23);
+            textBoxPhone.TabIndex = 34;
+            // 
+            // label6
+            // 
+            label6.AutoSize = true;
+            label6.Location = new Point(12, 159);
+            label6.Name = "label6";
+            label6.Size = new Size(55, 15);
+            label6.TabIndex = 33;
+            label6.Text = "Телефон";
+            // 
+            // FormEmployee
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(472, 290);
+            Controls.Add(textBoxPhone);
+            Controls.Add(label6);
+            Controls.Add(textBoxAddress);
+            Controls.Add(label5);
+            Controls.Add(dateTimePicker1);
+            Controls.Add(label3);
+            Controls.Add(textBoxEmail);
+            Controls.Add(label4);
+            Controls.Add(textBoxName);
+            Controls.Add(label2);
+            Controls.Add(buttonCancel);
+            Controls.Add(buttonSave);
+            Controls.Add(label1);
+            Controls.Add(comboBoxPosition);
+            Name = "FormEmployee";
+            Text = "FormEmployee";
+            Load += FormEmployee_Load;
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private TextBox textBoxEmail;
+        private Label label4;
+        private TextBox textBoxName;
+        private Label label2;
+        private Button buttonCancel;
+        private Button buttonSave;
+        private Label label1;
+        private ComboBox comboBoxPosition;
+        private Label label3;
+        private DateTimePicker dateTimePicker1;
+        private TextBox textBoxAddress;
+        private Label label5;
+        private TextBox textBoxPhone;
+        private Label label6;
+    }
+}

DepartmentStaffView/DepartmentStaffView/FormEmployee.cs

@@ -0,0 +1,101 @@
+using DepartmentStaffDatabase;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using static System.Windows.Forms.VisualStyles.VisualStyleElement;
+
+namespace DepartmentStaffView
+{
+    public partial class FormEmployee : Form
+    {
+        private readonly Abstracts db;
+        public int? EmployeeId;
+        public FormEmployee(Abstracts abstracts)
+        {
+            InitializeComponent();
+            db = abstracts;
+        }
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                //if (string.IsNullOrEmpty(textBox1.Text) || string.IsNullOrEmpty(textBox2.Text))
+                //{
+                //    MessageBox.Show("Заполните поля. Они все обязательные!");
+                //    return;
+                //}
+                if (EmployeeId.HasValue)
+                {
+                    db.UpdateEmployee(new()
+                    {
+                        Id = EmployeeId.Value,
+                        EmployeeName = textBoxName.Text,
+                        Address = textBoxAddress.Text,
+                        Email = textBoxEmail.Text,
+                        PhoneNumber = textBoxPhone.Text,
+                        Birthdate = dateTimePicker1.Value,
+                        PositionId = (comboBoxPosition.SelectedItem as Position).Id,
+                    });
+                }
+                else
+                {
+                    db.CreateEmployee(new()
+                    {
+                        EmployeeName = textBoxName.Text,
+                        Address = textBoxAddress.Text,
+                        Email = textBoxEmail.Text,
+                        PhoneNumber = textBoxPhone.Text,
+                        Birthdate = dateTimePicker1.Value,
+                        PositionId = (comboBoxPosition.SelectedItem as Position).Id,
+                    });
+                }
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+        private void LoadData()
+        {
+            try
+            {
+                var deps = db.GetPositions();
+                comboBoxPosition.DataSource = deps;
+
+                comboBoxPosition.DisplayMember = "PositionName";
+                comboBoxPosition.ValueMember = "Id";
+
+                if (EmployeeId.HasValue)
+                {
+                    textBoxAddress.Text = db.GetEmployee(EmployeeId.Value).Address;
+                    textBoxPhone.Text = db.GetEmployee(EmployeeId.Value).PhoneNumber;
+                    textBoxEmail.Text = db.GetEmployee(EmployeeId.Value).Email;
+                    textBoxName.Text = db.GetEmployee(EmployeeId.Value).EmployeeName;
+                    dateTimePicker1.Value = db.GetEmployee(EmployeeId.Value).Birthdate;
+                    comboBoxPosition.SelectedValue = db.GetEmployee(EmployeeId.Value).PositionId;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        private void FormEmployee_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

DepartmentStaffView/DepartmentStaffView/FormEmployee.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

DepartmentStaffView/DepartmentStaffView/FormEmployees.Designer.cs

@@ -0,0 +1,102 @@
+namespace DepartmentStaffView
+{
+    partial class FormEmployees
+    {
+        /// <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();
+            buttonгUpdate = new Button();
+            buttonCreate = new Button();
+            dataGridView1 = new DataGridView();
+            ((System.ComponentModel.ISupportInitialize)dataGridView1).BeginInit();
+            SuspendLayout();
+            // 
+            // buttonDelete
+            // 
+            buttonDelete.Location = new Point(808, 117);
+            buttonDelete.Name = "buttonDelete";
+            buttonDelete.Size = new Size(75, 23);
+            buttonDelete.TabIndex = 12;
+            buttonDelete.Text = "Удалить";
+            buttonDelete.UseVisualStyleBackColor = true;
+            buttonDelete.Click += buttonDelete_Click;
+            // 
+            // buttonгUpdate
+            // 
+            buttonгUpdate.Location = new Point(808, 61);
+            buttonгUpdate.Name = "buttonгUpdate";
+            buttonгUpdate.Size = new Size(75, 23);
+            buttonгUpdate.TabIndex = 11;
+            buttonгUpdate.Text = "Обновить";
+            buttonгUpdate.UseVisualStyleBackColor = true;
+            buttonгUpdate.Click += buttonUpdate_Click;
+            // 
+            // buttonCreate
+            // 
+            buttonCreate.Location = new Point(808, 12);
+            buttonCreate.Name = "buttonCreate";
+            buttonCreate.Size = new Size(75, 23);
+            buttonCreate.TabIndex = 10;
+            buttonCreate.Text = "Добавить";
+            buttonCreate.UseVisualStyleBackColor = true;
+            buttonCreate.Click += buttonCreate_Click;
+            // 
+            // dataGridView1
+            // 
+            dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView1.Location = new Point(12, 11);
+            dataGridView1.Margin = new Padding(3, 2, 3, 2);
+            dataGridView1.Name = "dataGridView1";
+            dataGridView1.RowHeadersWidth = 51;
+            dataGridView1.RowTemplate.Height = 29;
+            dataGridView1.Size = new Size(790, 320);
+            dataGridView1.TabIndex = 9;
+            // 
+            // FormEmployees
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(926, 347);
+            Controls.Add(buttonDelete);
+            Controls.Add(buttonгUpdate);
+            Controls.Add(buttonCreate);
+            Controls.Add(dataGridView1);
+            Name = "FormEmployees";
+            Text = "FormEmployees";
+            Load += FormEmployees_Load;
+            ((System.ComponentModel.ISupportInitialize)dataGridView1).EndInit();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private Button buttonDelete;
+        private Button buttonгUpdate;
+        private Button buttonCreate;
+        private DataGridView dataGridView1;
+    }
+}

DepartmentStaffView/DepartmentStaffView/FormEmployees.cs

@@ -0,0 +1,83 @@
+using DepartmentStaffDatabase;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace DepartmentStaffView
+{
+    public partial class FormEmployees : Form
+    {
+        private readonly Abstracts db;
+        public FormEmployees(Abstracts abstracts)
+        {
+            InitializeComponent();
+            db = abstracts;
+        }
+        private void LoadData()
+        {
+            try
+            {
+                var list = db.GetEmployees();
+                dataGridView1.DataSource = list;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        private void FormEmployees_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormEmployee));
+            if (service is FormEmployee form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+        private void buttonUpdate_Click(object sender, EventArgs e)
+        {
+            if (dataGridView1.SelectedRows.Count == 1)
+            {
+                int id = Convert.ToInt32(dataGridView1.SelectedRows[0].Cells["Id"].Value);
+
+                var service = Program.ServiceProvider?.GetService(typeof(FormEmployee));
+                if (service is FormEmployee form)
+                {
+                    form.EmployeeId = id;
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+        private void buttonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView1.SelectedRows.Count == 1)
+            {
+                int id = Convert.ToInt32(dataGridView1.SelectedRows[0].Cells["Id"].Value);
+                try
+                {
+                    db.DeleteEmployee(id);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+                LoadData();
+            }
+        }
+    }
+}

DepartmentStaffView/DepartmentStaffView/FormEmployees.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

DepartmentStaffView/DepartmentStaffView/FormMain.Designer.cs

@@ -30,6 +30,7 @@
         {
             buttonDepartments = new Button();
             buttonPositions = new Button();
+            buttonEmployees = new Button();
             SuspendLayout();
             // 
             // buttonDepartments
@@ -52,11 +53,22 @@
             buttonPositions.UseVisualStyleBackColor = true;
             buttonPositions.Click += buttonPositions_Click;
             // 
+            // buttonEmployees
+            // 
+            buttonEmployees.Location = new Point(12, 131);
+            buttonEmployees.Name = "buttonEmployees";
+            buttonEmployees.Size = new Size(141, 44);
+            buttonEmployees.TabIndex = 2;
+            buttonEmployees.Text = "Работники";
+            buttonEmployees.UseVisualStyleBackColor = true;
+            buttonEmployees.Click += buttonEmployees_Click;
+            // 
             // FormMain
             // 
             AutoScaleDimensions = new SizeF(7F, 15F);
             AutoScaleMode = AutoScaleMode.Font;
             ClientSize = new Size(800, 450);
+            Controls.Add(buttonEmployees);
             Controls.Add(buttonPositions);
             Controls.Add(buttonDepartments);
             Name = "FormMain";
@@ -68,5 +80,6 @@
 
         private Button buttonDepartments;
         private Button buttonPositions;
+        private Button buttonEmployees;
     }
 }

DepartmentStaffView/DepartmentStaffView/FormMain.cs

@@ -35,5 +35,13 @@ namespace DepartmentStaffView
                 form.Show();
             }
         }
+        private void buttonEmployees_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormEmployees));
+            if (service is FormEmployees form)
+            {
+                form.Show();
+            }
+        }
     }
 }

DepartmentStaffView/DepartmentStaffView/FormPosition.cs

@@ -73,8 +73,9 @@ namespace DepartmentStaffView
 
                 if (PositionId.HasValue)
                 {
-                    textBox1.Text = db.GetPosition(PositionId ?? default(int)).PositionName;
+                    textBox1.Text = db.GetPosition(PositionId.Value).PositionName;
-                    textBox2.Text = db.GetPosition(PositionId ?? default(int)).Salary.ToString();
+                    textBox2.Text = db.GetPosition(PositionId.Value).Salary.ToString();
+                    comboBoxDepartment.SelectedValue = db.GetPosition(PositionId.Value).DepartmentId;
                 }
             }
             catch (Exception ex)

DepartmentStaffView/DepartmentStaffView/FormPositions.Designer.cs

@@ -87,7 +87,7 @@
             Controls.Add(dataGridView1);
             Name = "FormPositions";
             Text = "FormPositions";
-            Load += FormDepartments_Load;
+            Load += FormPositions_Load;
             ((System.ComponentModel.ISupportInitialize)dataGridView1).EndInit();
             ResumeLayout(false);
         }

DepartmentStaffView/DepartmentStaffView/FormPositions.cs

@@ -31,7 +31,7 @@ namespace DepartmentStaffView
                 MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
         }
-        private void FormDepartments_Load(object sender, EventArgs e)
+        private void FormPositions_Load(object sender, EventArgs e)
         {
             LoadData();
         }

DepartmentStaffView/DepartmentStaffView/Program.cs

@@ -24,6 +24,8 @@ namespace DepartmentStaffView
             services.AddTransient<FormDepartment>();
             services.AddTransient<FormPositions>();
             services.AddTransient<FormPosition>();
+            services.AddTransient<FormEmployees>();
+            services.AddTransient<FormEmployee>();
         }
     }
 }