public void CreateMyMainMenu()
{
   // Create an empty MainMenu.
   MainMenu mainMenu1 = new MainMenu();

   MenuItem menuItem1 = new MenuItem();
   MenuItem menuItem2 = new MenuItem();

   menuItem1.Text = "File";
   menuItem2.Text = "Edit";
   // Add two MenuItem objects to the MainMenu.
   mainMenu1.MenuItems.Add(menuItem1);
   mainMenu1.MenuItems.Add(menuItem2);
   
   // Bind the MainMenu to Form1.
   Menu = mainMenu1;   
}

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Add a Main Menu. 
 
using System; 
using System.Windows.Forms; 
 
public class MenuForm : Form { 
  MainMenu MyMenu; 
 
  public MenuForm() { 
    Text = "Adding a Main Menu"; 
 
    // Create a main menu object. 
    MyMenu  = new MainMenu(); 
 
    // Add top-level menu items to the menu. 
    MenuItem m1 = new MenuItem("File"); 
    MyMenu.MenuItems.Add(m1); 
 
    MenuItem m2 = new MenuItem("Tools"); 
    MyMenu.MenuItems.Add(m2); 
 
    // Create File submenu 
    MenuItem subm1 = new MenuItem("Open"); 
    m1.MenuItems.Add(subm1); 
 
    MenuItem subm2 = new MenuItem("Close"); 
    m1.MenuItems.Add(subm2); 
 
    MenuItem subm3 = new MenuItem("Exit"); 
    m1.MenuItems.Add(subm3); 
 
    // Create Tools submenu 
    MenuItem subm4 = new MenuItem("Coordinates"); 
    m2.MenuItems.Add(subm4); 
 
    MenuItem subm5 = new MenuItem("Change Size"); 
    m2.MenuItems.Add(subm5); 
 
    MenuItem subm6 = new MenuItem("Restore"); 
    m2.MenuItems.Add(subm6); 
 
 
    // Add event handlers for the menu items. 
    subm1.Click += new EventHandler(MMOpenClick); 
    subm2.Click += new EventHandler(MMCloseClick); 
    subm3.Click += new EventHandler(MMExitClick); 
    subm4.Click += new EventHandler(MMCoordClick); 
    subm5.Click += new EventHandler(MMChangeClick); 
    subm6.Click += new EventHandler(MMRestoreClick); 
 
    // Assign the menu to the form. 
    Menu = MyMenu; 
  }   
 
  [STAThread] 
  public static void Main() { 
    MenuForm skel = new MenuForm(); 
 
    Application.Run(skel); 
  } 
 
  // Handler for main menu Coordinates selection. 
  protected void MMCoordClick(object who, EventArgs e) { 
    // Create a string that contains the cooridinates. 
    string size = 
      String.Format("{0}: {1}, {2}\n{3}: {4}, {5} ", 
                    "Top, Left", Top, Left, 
                    "Bottom, Right", Bottom, Right); 
 
    // Display a message box. 
    MessageBox.Show(size, "Window Coordinates", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Change selection. 
  protected void MMChangeClick(object who, EventArgs e) { 
    Width = Height = 200; 
  } 
 
  // Handler for main menu Restore selection. 
  protected void MMRestoreClick(object who, EventArgs e) { 
    Width = Height = 300; 
  } 
 
  // Handler for main menu Open selection. 
  protected void MMOpenClick(object who, EventArgs e) { 
 
    MessageBox.Show("Inactive", "Inactive", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Open selection. 
  protected void MMCloseClick(object who, EventArgs e) { 
 
    MessageBox.Show("Inactive", "Inactive", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Exit selection. 
  protected void MMExitClick(object who, EventArgs e) { 
 
    DialogResult result = MessageBox.Show("Stop Program?", 
                            "Terminate", 
                             MessageBoxButtons.YesNo); 
 
    if(result == DialogResult.Yes) Application.Exit(); 
  } 
}