Компонент 1 готов.

Component_1/Class1.cs

@@ -1,6 +0,0 @@
-namespace Component_1
-{
-	public class Class1
-	{
-	}
-}

Component_1/List_with_choice.Designer.cs

@@ -0,0 +1,86 @@
+namespace Component_1
+{
+	partial class List_with_choice
+	{
+		/// <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()
+		{
+			checkedListBox1 = new CheckedListBox();
+			button_Load = new Button();
+			button_Clean = new Button();
+			SuspendLayout();
+			// 
+			// checkedListBox1
+			// 
+			checkedListBox1.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
+			checkedListBox1.FormattingEnabled = true;
+			checkedListBox1.Location = new Point(85, 23);
+			checkedListBox1.Name = "checkedListBox1";
+			checkedListBox1.Size = new Size(201, 92);
+			checkedListBox1.TabIndex = 0;
+			checkedListBox1.SelectedIndexChanged += checkedListBox1_SelectedIndexChanged;
+			// 
+			// button_Load
+			// 
+			button_Load.Anchor = AnchorStyles.Bottom;
+			button_Load.Location = new Point(6, 146);
+			button_Load.Name = "button_Load";
+			button_Load.Size = new Size(161, 29);
+			button_Load.TabIndex = 1;
+			button_Load.Text = "Заполнить список";
+			button_Load.UseVisualStyleBackColor = true;
+			button_Load.Click += button_Load_Click;
+			// 
+			// button_Clean
+			// 
+			button_Clean.Anchor = AnchorStyles.Bottom;
+			button_Clean.Location = new Point(203, 146);
+			button_Clean.Name = "button_Clean";
+			button_Clean.Size = new Size(153, 29);
+			button_Clean.TabIndex = 2;
+			button_Clean.Text = "Очистить список";
+			button_Clean.UseVisualStyleBackColor = true;
+			button_Clean.Click += button_Clean_Click;
+			// 
+			// List_with_choice
+			// 
+			AutoScaleDimensions = new SizeF(8F, 20F);
+			AutoScaleMode = AutoScaleMode.Font;
+			Controls.Add(button_Clean);
+			Controls.Add(button_Load);
+			Controls.Add(checkedListBox1);
+			Name = "List_with_choice";
+			Size = new Size(371, 198);
+			ResumeLayout(false);
+		}
+
+		#endregion
+
+		private CheckedListBox checkedListBox1;
+		private Button button_Load;
+		private Button button_Clean;
+	}
+}

Component_1/List_with_choice.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Component_1
+{
+	public partial class List_with_choice : UserControl
+	{
+		private event EventHandler? _checkedlistChanged;
+		private event Action? _errorOccured;
+		public string Error { get; private set; }
+
+		public String Element
+		{
+			get
+			{
+				if (checkedListBox1.SelectedItem != null) return checkedListBox1.SelectedItem.ToString();
+				else return string.Empty;
+			}
+			set
+			{
+				checkedListBox1.SelectedItem = value;
+			}
+		}
+
+		public event EventHandler Checkedlist
+		{
+			add { _checkedlistChanged += value; }
+			remove { _checkedlistChanged -= value; }
+		}
+		public event Action AnErrorOccurred
+		{
+			add { _errorOccured += value; }
+			remove { _errorOccured -= value; }
+		}
+
+		public List_with_choice()
+		{
+			InitializeComponent();
+			Error = string.Empty;
+		}
+
+		public void Fill_List(string str) //метод заполнения списка
+		{
+			if (str == null)
+			{
+				MessageBox.Show("Вы не ввели строку");
+				return;
+			}
+
+			string[] list = str.Split(' ');
+			foreach (string s in list)
+			{
+				checkedListBox1.Items.Add(s);
+			}
+		}
+		public void Clean_List() //метод очистки списка
+		{
+			checkedListBox1.Items.Clear();
+		}
+		private void button_Load_Click(object sender, EventArgs e)
+		{
+			string value = "";
+			if (InputBox("Заполнение списка", "Пожалуйста введите строку", ref value) == DialogResult.OK)
+			{
+				try
+				{
+					Fill_List(value);
+					_checkedlistChanged?.Invoke(this, e);
+				}
+				catch (Exception ex)
+				{
+					Error = ex.Message;
+					_errorOccured?.Invoke();
+				}
+			}
+		}
+
+		private void checkedListBox1_SelectedIndexChanged(object sender, EventArgs e)
+		{
+
+		}
+		public static DialogResult InputBox(string title, string promptText, ref string value)//диалоговое окно
+		{
+			Form form = new Form();
+			Label label = new Label();
+			TextBox textBox = new TextBox();
+			Button buttonOk = new Button();
+			Button buttonCancel = new Button();
+			form.Text = title;
+			label.Text = promptText;
+			buttonOk.Text = "OK";
+			buttonCancel.Text = "Cancel";
+			buttonOk.DialogResult = DialogResult.OK;
+			buttonCancel.DialogResult = DialogResult.Cancel;
+			label.SetBounds(36, 36, 372, 13);
+			textBox.SetBounds(36, 86, 700, 20);
+			buttonOk.SetBounds(228, 160, 160, 60);
+			buttonCancel.SetBounds(400, 160, 160, 60);
+			label.AutoSize = true;
+			form.ClientSize = new Size(796, 307);
+			form.FormBorderStyle = FormBorderStyle.FixedDialog;
+			form.StartPosition = FormStartPosition.CenterScreen;
+			form.MinimizeBox = false;
+			form.MaximizeBox = false;
+			form.Controls.AddRange(new Control[] { label, textBox, buttonOk, buttonCancel });
+			form.AcceptButton = buttonOk;
+			form.CancelButton = buttonCancel;
+			DialogResult dialogResult = form.ShowDialog();
+			value = textBox.Text;
+			return dialogResult;
+		}
+		private void button_Clean_Click(object sender, EventArgs e)
+		{
+			Clean_List();
+		}
+	}
+}

Component_1/List_with_choice.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>

Components/Components.csproj

@@ -8,4 +8,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\Component_1\Component_1.csproj" />
+  </ItemGroup>
+
 </Project>

Components/Components.sln

@@ -5,6 +5,8 @@ VisualStudioVersion = 17.5.33627.172
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Components", "Components.csproj", "{637B2B5F-8015-4DE8-B264-74F24B115812}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Component_1", "..\Component_1\Component_1.csproj", "{9E53BE81-4309-40C4-B6F8-0C80756EE09E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{637B2B5F-8015-4DE8-B264-74F24B115812}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{637B2B5F-8015-4DE8-B264-74F24B115812}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{637B2B5F-8015-4DE8-B264-74F24B115812}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9E53BE81-4309-40C4-B6F8-0C80756EE09E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9E53BE81-4309-40C4-B6F8-0C80756EE09E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9E53BE81-4309-40C4-B6F8-0C80756EE09E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9E53BE81-4309-40C4-B6F8-0C80756EE09E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Components/Form1.Designer.cs

@@ -28,12 +28,30 @@
 		/// </summary>
 		private void InitializeComponent()
 		{
-			this.components = new System.ComponentModel.Container();
+			list_with_choice1 = new Component_1.List_with_choice();
-			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			SuspendLayout();
-			this.ClientSize = new System.Drawing.Size(800, 450);
+			// 
-			this.Text = "Form1";
+			// list_with_choice1
+			// 
+			list_with_choice1.Element = "";
+			list_with_choice1.Location = new Point(131, 60);
+			list_with_choice1.Name = "list_with_choice1";
+			list_with_choice1.Size = new Size(464, 248);
+			list_with_choice1.TabIndex = 0;
+			// 
+			// Form1
+			// 
+			AutoScaleDimensions = new SizeF(8F, 20F);
+			AutoScaleMode = AutoScaleMode.Font;
+			ClientSize = new Size(800, 450);
+			Controls.Add(list_with_choice1);
+			Name = "Form1";
+			Text = "Form1";
+			ResumeLayout(false);
 		}
 
 		#endregion
+
+		private Component_1.List_with_choice list_with_choice1;
 	}
 }

Components/Form1.resx

@@ -1,64 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<root>
-<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">