ListBox.ContextMenu : ListBox « System.Windows.Forms « C# / C Sharp by API

1. C# / C Sharp by API
2. System.Windows.Forms
3. ListBox

ListBox.ContextMenu

 

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

public class ListBoxContextMenu : System.Windows.Forms.Form
{
  private System.Windows.Forms.Button btnDone;
  private System.Windows.Forms.TextBox textBox1;
  private System.Windows.Forms.Button btnAdd;
  private System.Windows.Forms.ListBox listBox1;
  private System.Windows.Forms.ContextMenu contextMenu1;
  private System.Windows.Forms.MenuItem menuItem1;
  private System.Windows.Forms.MenuItem menuItem2;
  private System.Windows.Forms.MenuItem menuItem3;
  private System.Windows.Forms.MenuItem menuItem4;

  private System.ComponentModel.Container components = null;

  public ListBoxContextMenu()
  {
    InitializeComponent();
  }

  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }

  #region Windows Form Designer generated code
  private void InitializeComponent()
  {
    this.btnDone = new System.Windows.Forms.Button();
    this.textBox1 = new System.Windows.Forms.TextBox();
    this.btnAdd = new System.Windows.Forms.Button();
    this.listBox1 = new System.Windows.Forms.ListBox();
    this.contextMenu1 = new System.Windows.Forms.ContextMenu();
    this.menuItem1 = new System.Windows.Forms.MenuItem();
    this.menuItem2 = new System.Windows.Forms.MenuItem();
    this.menuItem3 = new System.Windows.Forms.MenuItem();
    this.menuItem4 = new System.Windows.Forms.MenuItem();
    this.SuspendLayout();
    // 
    // btnDone
    // 
    this.btnDone.Location = new System.Drawing.Point(208, 16);
    this.btnDone.Name = "btnDone";
    this.btnDone.TabIndex = 3;
    this.btnDone.Text = "Done";
    this.btnDone.Click += new System.EventHandler(this.btnDone_Click);
    // 
    // textBox1
    // 
    this.textBox1.Location = new System.Drawing.Point(16, 88);
    this.textBox1.Name = "textBox1";
    this.textBox1.TabIndex = 5;
    this.textBox1.Text = "";
    // 
    // btnAdd
    // 
    this.btnAdd.Location = new System.Drawing.Point(16, 120);
    this.btnAdd.Name = "btnAdd";
    this.btnAdd.TabIndex = 6;
    this.btnAdd.Text = "Add";
    this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
    // 
    // listBox1
    // 
    this.listBox1.ContextMenu = this.contextMenu1;
    this.listBox1.Location = new System.Drawing.Point(16, 8);
    this.listBox1.Name = "listBox1";
    this.listBox1.Size = new System.Drawing.Size(120, 69);
    this.listBox1.TabIndex = 7;
    // 
    // contextMenu1
    // 
    this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
       this.menuItem1,
       this.menuItem2,
       this.menuItem3,
       this.menuItem4});
    // 
    // menuItem1
    // 
    this.menuItem1.Index = 0;
    this.menuItem1.Text = "Move Down";
    this.menuItem1.Click += new System.EventHandler(this.ctxtMenuClick);
    // 
    // menuItem2
    // 
    this.menuItem2.Index = 1;
    this.menuItem2.Text = "Move up";
    this.menuItem2.Click += new System.EventHandler(this.ctxtMenuClick);
    // 
    // menuItem3
    // 
    this.menuItem3.Index = 2;
    this.menuItem3.Text = "Delete";
    this.menuItem3.Click += new System.EventHandler(this.ctxtMenuClick);
    // 
    // menuItem4
    // 
    this.menuItem4.Index = 3;
    this.menuItem4.Text = "Duplicate";
    this.menuItem4.Click += new System.EventHandler(this.ctxtMenuClick);
    // 
    // ListBoxContextMenu
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 266);
    this.Controls.AddRange(new System.Windows.Forms.Control[] {
        this.listBox1,
        this.btnAdd,
        this.textBox1,
        this.btnDone});
    this.Name = "ListBoxContextMenu";
    this.ResumeLayout(false);

  }
  #endregion

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

  private void btnDone_Click(object sender, System.EventArgs e)
  {
    Application.Exit();
  }

  private void btnAdd_Click(object sender, System.EventArgs e)
  {
    listBox1.Items.Add(textBox1.Text);
    textBox1.Text = "";
  }

  private void ctxtMenuClick(object sender, System.EventArgs e)
  {
    if ( listBox1.SelectedIndex != -1 )
    {
      MenuItem mi = (MenuItem) sender;
      MessageBox.Show(mi.Text + " on " + listBox1.SelectedItem,"Context Menu", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
    }else{
      MessageBox.Show("Please select an item","Context Menu Tester", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

    }
  }
}

   
  

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