Вроде исправил

WinFormsProject/WinFormsLibrary/Class1.cs

@@ -0,0 +1,6 @@
+namespace WinFormsLibrary
+{
+    public class Class1
+    {
+    }
+}

WinFormsProject/WinFormsLibrary/CustomCheckedListBox.Designer.cs

@@ -0,0 +1,58 @@
+namespace WinFormsLibrary
+{
+    partial class CustomCheckedListBox
+    {
+        /// <summary> 
+        /// Обязательная переменная конструктора.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary> 
+        /// Освободить все используемые ресурсы.
+        /// </summary>
+        /// <param name="disposing">истинно, если управляемый ресурс должен быть удален; иначе ложно.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Код, автоматически созданный конструктором компонентов
+
+        /// <summary> 
+        /// Требуемый метод для поддержки конструктора — не изменяйте 
+        /// содержимое этого метода с помощью редактора кода.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.checkedListBox = new System.Windows.Forms.CheckedListBox();
+            this.SuspendLayout();
+            // 
+            // checkedListBox
+            // 
+            this.checkedListBox.FormattingEnabled = true;
+            this.checkedListBox.Location = new System.Drawing.Point(31, 16);
+            this.checkedListBox.Name = "checkedListBox";
+            this.checkedListBox.Size = new System.Drawing.Size(262, 94);
+            this.checkedListBox.TabIndex = 0;
+            this.checkedListBox.SelectedValueChanged += new System.EventHandler(this.checkedListBox_SelectedValueChanged);
+            // 
+            // CustomCheckedListBox
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.Controls.Add(this.checkedListBox);
+            this.Name = "CustomCheckedListBox";
+            this.Size = new System.Drawing.Size(333, 141);
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private CheckedListBox checkedListBox;
+    }
+}

WinFormsProject/WinFormsLibrary/CustomCheckedListBox.cs

@@ -0,0 +1,78 @@
+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 WinFormsLibrary
+{
+
+    public partial class CustomCheckedListBox : UserControl
+    {
+        public CustomCheckedListBox()
+        {
+            InitializeComponent();
+        }
+
+        public void Clear()
+        {
+            checkedListBox.Items.Clear();
+        }
+
+        public CheckedListBox.ObjectCollection Items
+        {
+            get
+            {
+                return checkedListBox.Items;
+            }
+        }
+
+        public string Selected
+        {
+            get
+            {        
+                if (checkedListBox.SelectedItem != null)
+                {
+                    return checkedListBox.SelectedItem.ToString();
+                }
+                else
+                {
+                    return "";
+                }
+            }
+            set
+            {
+                for (int i = 0; i < checkedListBox.Items.Count; ++i)
+                {
+                    if (checkedListBox.Items[i].ToString() == value)
+                    {
+                        checkedListBox.SetItemChecked(i, true);                        
+                    }
+                }
+            }
+        }
+
+        private EventHandler onValueChanged;
+        public event EventHandler ValueChanged
+        {
+            add
+            {
+                onValueChanged += value;
+            }
+            remove
+            {
+                onValueChanged -= value;
+            }
+        }
+
+        private void checkedListBox_SelectedValueChanged(object sender, EventArgs e)
+        {
+            onValueChanged?.Invoke(sender, e);
+        }
+    }
+}

WinFormsProject/WinFormsLibrary/CustomCheckedListBox.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>

WinFormsProject/WinFormsLibrary/NumberTextBox.Designer.cs

@@ -0,0 +1,59 @@
+namespace WinFormsLibrary
+{
+    partial class NumberTextBox
+    {
+        /// <summary> 
+        /// Обязательная переменная конструктора.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary> 
+        /// Освободить все используемые ресурсы.
+        /// </summary>
+        /// <param name="disposing">истинно, если управляемый ресурс должен быть удален; иначе ложно.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Код, автоматически созданный конструктором компонентов
+
+        /// <summary> 
+        /// Требуемый метод для поддержки конструктора — не изменяйте 
+        /// содержимое этого метода с помощью редактора кода.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            numericUpDown = new NumericUpDown();
+            ((System.ComponentModel.ISupportInitialize)numericUpDown).BeginInit();
+            SuspendLayout();
+            // 
+            // numericUpDown
+            // 
+            numericUpDown.Location = new Point(117, 37);
+            numericUpDown.Maximum = new decimal(new int[] { 110, 0, 0, 0 });
+            numericUpDown.Minimum = new decimal(new int[] { 50, 0, 0, int.MinValue });
+            numericUpDown.Name = "numericUpDown";
+            numericUpDown.Size = new Size(120, 23);
+            numericUpDown.TabIndex = 0;
+            // 
+            // NumberTextBox
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            Controls.Add(numericUpDown);
+            Name = "NumberTextBox";
+            Size = new Size(364, 106);
+            ((System.ComponentModel.ISupportInitialize)numericUpDown).EndInit();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private NumericUpDown numericUpDown;
+    }
+}

WinFormsProject/WinFormsLibrary/NumberTextBox.cs

@@ -0,0 +1,92 @@
+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 WinFormsLibrary
+{
+    public partial class NumberTextBox : UserControl
+    {
+        public int? maxValue = null;
+        public int? minValue = null;
+        public string errorText = "";
+
+        public NumberTextBox()
+        {
+            InitializeComponent();
+
+        }
+
+        public int? MinValue
+        {
+            get { return minValue; }
+            set
+            {
+                if (value == null) return;
+                minValue = value;
+                numericUpDown.Minimum = (int)value;
+            }
+        }
+
+        public int? MaxValue
+        {
+            get { return maxValue; }
+            set
+            {
+                if (value == null) return;
+                maxValue = value;
+                numericUpDown.Maximum = (int)value;
+            }
+        }
+
+        public decimal? Value
+        {
+            get {
+                if (CheckRanges(numericUpDown.Value))
+                {
+                    return numericUpDown.Value;
+                }
+                else
+                {
+                    return null;
+                }
+            }
+            set
+            {
+                if (CheckRanges(value))
+                {
+                    numericUpDown.Value = (decimal)value;
+                }
+            }
+        }
+
+        private bool CheckRanges(decimal? value) 
+        {
+            if (MinValue == null || MaxValue == null)
+            {
+                errorText = "Ошибка, диапазоны не заданы.";
+                return false;
+            }
+
+            if (value < MinValue || value > MaxValue)
+            {
+                errorText = "Ошибка, значение не входит в заданный диапазон.";
+                return false;
+            }
+
+            errorText = "Ошибок нет.";
+            return true;
+        }
+
+        public event EventHandler DateChanged
+        {
+            add { numericUpDown.ValueChanged += value; }
+            remove { numericUpDown.ValueChanged -= value; }
+        }
+    }
+}

WinFormsProject/WinFormsLibrary/NumberTextBox.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>

WinFormsProject/WinFormsLibrary/TreeClass.Designer.cs

@@ -0,0 +1,56 @@
+namespace WinFormsLibrary
+{
+    partial class TreeClass
+    {
+        /// <summary> 
+        /// Обязательная переменная конструктора.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary> 
+        /// Освободить все используемые ресурсы.
+        /// </summary>
+        /// <param name="disposing">истинно, если управляемый ресурс должен быть удален; иначе ложно.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Код, автоматически созданный конструктором компонентов
+
+        /// <summary> 
+        /// Требуемый метод для поддержки конструктора — не изменяйте 
+        /// содержимое этого метода с помощью редактора кода.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.treeView = new System.Windows.Forms.TreeView();
+            this.SuspendLayout();
+            // 
+            // treeView
+            // 
+            this.treeView.Location = new System.Drawing.Point(0, 0);
+            this.treeView.Name = "treeView";
+            this.treeView.Size = new System.Drawing.Size(292, 224);
+            this.treeView.TabIndex = 0;
+            // 
+            // TreeClass
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.Controls.Add(this.treeView);
+            this.Name = "TreeClass";
+            this.Size = new System.Drawing.Size(292, 224);
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private TreeView treeView;
+    }
+}

WinFormsProject/WinFormsLibrary/TreeClass.cs

@@ -0,0 +1,133 @@
+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 WinFormsLibrary
+{
+    public partial class TreeClass : UserControl
+    {
+        private List<string> hierarchy;
+        public bool hasError = false;
+
+        public TreeClass()
+        {
+            InitializeComponent();
+        }
+
+        public void setHierarchy(List<string> h)
+        {
+            hierarchy = h;
+        }
+
+        private bool hasValue(TreeNodeCollection nodes, string value)
+        {
+            foreach (TreeNode node in nodes)
+            {
+                if (node.Text == value) return true;
+            }
+
+            return false;
+        }
+
+        private bool addData<T>(T t, string propertyName)
+        {
+            TreeNodeCollection current = treeView.Nodes;
+
+            foreach (string h in hierarchy)
+            {
+                if (h == propertyName)
+                {
+                    var field = t.GetType().GetField(h);
+
+                    if (field == null)
+                    {
+                        return false;
+                    }
+
+                    string value = field.GetValue(t).ToString();
+                    if (!hasValue(current, value)) current.Add(value);
+
+                    TreeNode elem = null;
+
+                    foreach (TreeNode child in current)
+                    {
+                        if (child.Text == value)
+                        {
+                            elem = child;
+                            break;
+                        }
+                    }
+
+                    if (elem != null) current = elem.Nodes;
+                }
+                else
+                {
+                    if (!hasValue(current, h)) current.Add(h);
+
+                    TreeNode elem = null;
+
+                    foreach (TreeNode child in current)
+                    {
+                        if (child.Text == h)
+                        {
+                            elem = child;
+                            break;
+                        }
+                    }
+
+                    if (elem != null) current = elem.Nodes;
+                }
+            }
+
+            return true;
+        }
+
+        public bool setData<T>(T data, string propertyName)
+        {
+            bool status = addData<T>(data, propertyName);
+            if (!status) return false;
+
+            return true;
+        }
+
+        public T GetSelectedClass<T>() where T : new()
+        {
+            T res = default(T);
+            TreeNode node = treeView.SelectedNode;
+
+            if (node.Nodes.Count != 0)
+            {
+                hasError = true;
+                return res;
+            }
+
+            for (int i = hierarchy.Count - 1; i >= 0; i--)
+            {
+                if (node == null)
+                {
+                    hasError = true;
+                    return res;
+                }
+
+                var curr = res.GetType().GetField(hierarchy[i]);
+                if (curr == null)
+                {
+                    hasError = true;
+                    return res;
+                }
+
+                curr.SetValue(res, node.Text);
+                node = node.Parent;
+            }
+
+            return res;
+        }
+    }
+}

WinFormsProject/WinFormsLibrary/TreeClass.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>

WinFormsProject/WinFormsLibrary/WinFormsLibrary.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

WinFormsProject/WinFormsProject.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32819.101
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WinFormsProject", "WinFormsProject\WinFormsProject.csproj", "{1FC6ABE3-DF27-453A-B2EE-FA17C71C9CF0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WinFormsLibrary", "WinFormsLibrary\WinFormsLibrary.csproj", "{CF6B5601-DC60-48A2-8BDC-1CE32E3F6F15}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1FC6ABE3-DF27-453A-B2EE-FA17C71C9CF0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1FC6ABE3-DF27-453A-B2EE-FA17C71C9CF0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1FC6ABE3-DF27-453A-B2EE-FA17C71C9CF0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1FC6ABE3-DF27-453A-B2EE-FA17C71C9CF0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CF6B5601-DC60-48A2-8BDC-1CE32E3F6F15}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CF6B5601-DC60-48A2-8BDC-1CE32E3F6F15}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CF6B5601-DC60-48A2-8BDC-1CE32E3F6F15}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CF6B5601-DC60-48A2-8BDC-1CE32E3F6F15}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2774D1CA-C461-4F94-89BF-C2FD28AC4024}
+	EndGlobalSection
+EndGlobal

WinFormsProject/WinFormsProject/Form1.Designer.cs

@@ -0,0 +1,97 @@
+namespace WinFormsProject
+{
+    partial class Form1
+    {
+        /// <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()
+        {
+            this.customCheckedListBox1 = new WinFormsLibrary.CustomCheckedListBox();
+            this.Button_Fill = new System.Windows.Forms.Button();
+            this.Button_Clear = new System.Windows.Forms.Button();
+            this.Button_GetChosenValues = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // customCheckedListBox1
+            // 
+            this.customCheckedListBox1.Location = new System.Drawing.Point(21, 21);
+            this.customCheckedListBox1.Name = "customCheckedListBox1";
+            this.customCheckedListBox1.Selected = "";
+            this.customCheckedListBox1.Size = new System.Drawing.Size(333, 141);
+            this.customCheckedListBox1.TabIndex = 0;
+            // 
+            // Button_Fill
+            // 
+            this.Button_Fill.Location = new System.Drawing.Point(130, 141);
+            this.Button_Fill.Name = "Button_Fill";
+            this.Button_Fill.Size = new System.Drawing.Size(106, 45);
+            this.Button_Fill.TabIndex = 1;
+            this.Button_Fill.Text = "Заполнить";
+            this.Button_Fill.UseVisualStyleBackColor = true;
+            this.Button_Fill.Click += new System.EventHandler(this.Button_Fill_Click);
+            // 
+            // Button_Clear
+            // 
+            this.Button_Clear.Location = new System.Drawing.Point(130, 206);
+            this.Button_Clear.Name = "Button_Clear";
+            this.Button_Clear.Size = new System.Drawing.Size(106, 53);
+            this.Button_Clear.TabIndex = 2;
+            this.Button_Clear.Text = "Очистить";
+            this.Button_Clear.UseVisualStyleBackColor = true;
+            this.Button_Clear.Click += new System.EventHandler(this.Button_Clear_Click);
+            // 
+            // Button_GetChosenValues
+            // 
+            this.Button_GetChosenValues.Location = new System.Drawing.Point(130, 277);
+            this.Button_GetChosenValues.Name = "Button_GetChosenValues";
+            this.Button_GetChosenValues.Size = new System.Drawing.Size(106, 52);
+            this.Button_GetChosenValues.TabIndex = 3;
+            this.Button_GetChosenValues.Text = "Выбранные значения";
+            this.Button_GetChosenValues.UseVisualStyleBackColor = true;
+            this.Button_GetChosenValues.Click += new System.EventHandler(this.Button_GetChosenValues_Click);
+            // 
+            // Form1
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.Button_GetChosenValues);
+            this.Controls.Add(this.Button_Clear);
+            this.Controls.Add(this.Button_Fill);
+            this.Controls.Add(this.customCheckedListBox1);
+            this.Name = "Form1";
+            this.Text = "Form1";
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private WinFormsLibrary.CustomCheckedListBox customCheckedListBox1;
+        private Button Button_Fill;
+        private Button Button_Clear;
+        private Button Button_GetChosenValues;
+    }
+}

WinFormsProject/WinFormsProject/Form1.cs

@@ -0,0 +1,41 @@
+namespace WinFormsProject
+{
+    public partial class Form1 : Form
+    {
+        List<string> list = new List<string> { "Ìàðàò", "Áóðàê", "Ðîâøàê" };
+
+        public Form1()
+        {
+            InitializeComponent();
+            customCheckedListBox1.FillCheckedListBox(list);
+            customCheckedListBox1.ValueChanged += CustomEventHandler;
+        }
+
+        private void CustomEventHandler(object sender, EventArgs e)
+        {
+            MessageBox.Show("Çíà÷åíèå áûëî èçìåíåíî.");
+        }
+
+        private void Button_Clear_Click(object sender, EventArgs e)
+        {
+            customCheckedListBox1.Clear();
+        }
+
+        private void Button_Fill_Click(object sender, EventArgs e)
+        {
+            customCheckedListBox1.FillCheckedListBox(list);
+        }
+
+        private void Button_GetChosenValues_Click(object sender, EventArgs e)
+        {
+            if (customCheckedListBox1.Selected == null || customCheckedListBox1.Selected == "")
+            {
+                MessageBox.Show("Íåòó âûáðàííûõ ýëåìåíòîâ.");
+            }
+            else
+            {
+                MessageBox.Show(customCheckedListBox1.Selected);
+            }
+        }
+    }
+}

WinFormsProject/WinFormsProject/Form1.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>

WinFormsProject/WinFormsProject/Program.cs

@@ -0,0 +1,17 @@
+namespace WinFormsProject
+{
+    internal static class Program
+    {
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            ApplicationConfiguration.Initialize();
+            Application.Run(new Form1());
+        }
+    }
+}

WinFormsProject/WinFormsProject/WinFormsProject.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\WinFormsLibrary\WinFormsLibrary.csproj" />
+  </ItemGroup>
+
+</Project>