Creating a menu on the fly. : MenuItem : GUI Windows Form C# Source Code

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

public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.MainMenu File = new System.Windows.Forms.MainMenu();
    private System.Windows.Forms.MenuItem menuItem1 = new System.Windows.Forms.MenuItem();
    private System.Windows.Forms.MenuItem menuItem2 = new System.Windows.Forms.MenuItem();
    private System.Windows.Forms.MenuItem menuItem3 = new System.Windows.Forms.MenuItem();
    private System.Windows.Forms.Button button1 = new System.Windows.Forms.Button();
    private System.Windows.Forms.Button button2 = new System.Windows.Forms.Button();
    private System.ComponentModel.Container components = null;
    private int nIndex = 0;

    public Form1() {
        this.SuspendLayout();
        this.File.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {this.menuItem1});
        this.menuItem1.Index = 0;
        this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] { this.menuItem2, this.menuItem3});
        this.menuItem1.Text = "File";
        this.menuItem2.Index = 0;
        this.menuItem2.Text = "&Close";
        this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
        this.menuItem3.Index = 1;
        this.menuItem3.Text = "E&xit";
        this.button1.Location = new System.Drawing.Point(40, 208);
        this.button1.Name = "button1";
        this.button1.TabIndex = 0;
        this.button1.Text = "&Add";
        this.button1.Click += new System.EventHandler(this.button1_Click);
        this.button2.Location = new System.Drawing.Point(176, 208);
        this.button2.Name = "button2";
        this.button2.TabIndex = 1;
        this.button2.Text = "&Close";
        this.button2.Click += new System.EventHandler(this.button2_Click);
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(292, 273);
        this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button2, this.button1});
        this.Menu = this.File;
        this.ResumeLayout(false);
    }

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

    private void button2_Click(object sender, System.EventArgs e) {
        Close();
    }

    private void menuItemHandler(object sender, System.EventArgs e) {
        MessageBox.Show(this, "Menu Handler Called");
        MenuItem mi = (MenuItem)sender;
        MessageBox.Show(this, "Menu Item: " + mi.Text);
    }

    private void button1_Click(object sender, System.EventArgs e) {
        MenuItem mi = new MenuItem("File " + (nIndex + 1), new EventHandler(menuItemHandler));
        this.menuItem1.MenuItems.Add(mi);
        nIndex++;
    }

    private void menuItem2_Click(object sender, System.EventArgs e) {
        Close();
    }
}