CheckedListBox Item Check event : CheckBox List : GUI Windows Form C# Source Code

    

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form
{
      private System.Windows.Forms.CheckedListBox inputCheckedListBox;
      private System.Windows.Forms.ListBox displayListBox;
    
    public Form1() {
         InitializeComponent();
    }
      private void inputCheckedListBox_ItemCheck(object sender, ItemCheckEventArgs e )
      {
         string item = inputCheckedListBox.SelectedItem.ToString();

         if ( e.NewValue == CheckState.Checked )
            displayListBox.Items.Add( item );
         else
            displayListBox.Items.Remove( item );
      }
      private void InitializeComponent()
      {
         this.inputCheckedListBox = new System.Windows.Forms.CheckedListBox();
         this.displayListBox = new System.Windows.Forms.ListBox();
         this.SuspendLayout();
         // 
         // inputCheckedListBox
         // 
         this.inputCheckedListBox.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
         this.inputCheckedListBox.FormattingEnabled = true;
         this.inputCheckedListBox.Items.AddRange(new object[] {
            "A",
            "B",
            "C",
            "D",
            "E",
            "F",
            "G",
            "H"});
         this.inputCheckedListBox.Location = new System.Drawing.Point(17, 12);
         this.inputCheckedListBox.Name = "inputCheckedListBox";
         this.inputCheckedListBox.Size = new System.Drawing.Size(202, 188);
         this.inputCheckedListBox.TabIndex = 0;
         this.inputCheckedListBox.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.inputCheckedListBox_ItemCheck);
         // 
         // displayListBox
         // 
         this.displayListBox.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
         this.displayListBox.FormattingEnabled = true;
         this.displayListBox.ItemHeight = 20;
         this.displayListBox.Location = new System.Drawing.Point(236, 12);
         this.displayListBox.Name = "displayListBox";
         this.displayListBox.Size = new System.Drawing.Size(190, 184);
         this.displayListBox.TabIndex = 1;
         // 
         // CheckedListBoxTestForm
         // 
         this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
         this.ClientSize = new System.Drawing.Size(438, 211);
         this.Controls.Add(this.displayListBox);
         this.Controls.Add(this.inputCheckedListBox);
         this.Name = "CheckedListBoxTestForm";
         this.Text = "CheckedListBoxTest";
         this.ResumeLayout(false);

      }

  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }

}