form1.cs

解压包里的是用C#写的100个例子

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

namespace MDIFormApp
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
        private static int FormCount=0;

        private System.Windows.Forms.MainMenu mainMenu1;
        private System.Windows.Forms.MenuItem menuItem4;
        private System.Windows.Forms.MenuItem File;
        private System.Windows.Forms.MenuItem FileNew;
        private System.Windows.Forms.MenuItem FileExit;
        private System.Windows.Forms.MenuItem Window;
        private System.Windows.Forms.MenuItem WindowCascade;
        private System.Windows.Forms.MenuItem WindowHorizontal;
        private System.Windows.Forms.MenuItem WindowVertical;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.File = new System.Windows.Forms.MenuItem();
			this.FileNew = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.FileExit = new System.Windows.Forms.MenuItem();
			this.Window = new System.Windows.Forms.MenuItem();
			this.WindowCascade = new System.Windows.Forms.MenuItem();
			this.WindowHorizontal = new System.Windows.Forms.MenuItem();
			this.WindowVertical = new System.Windows.Forms.MenuItem();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.File,
																					  this.Window});
			// 
			// File
			// 
			this.File.Index = 0;
			this.File.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																				 this.FileNew,
																				 this.menuItem4,
																				 this.FileExit});
			this.File.Text = "文件(&F)";
			// 
			// FileNew
			// 
			this.FileNew.Index = 0;
			this.FileNew.Text = "新建(&N)";
			this.FileNew.Click += new System.EventHandler(this.FileNew_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 1;
			this.menuItem4.Text = "-";
			// 
			// FileExit
			// 
			this.FileExit.Index = 2;
			this.FileExit.Text = "退出(&E)";
			this.FileExit.Click += new System.EventHandler(this.FileExit_Click);
			// 
			// Window
			// 
			this.Window.Index = 1;
			this.Window.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																				   this.WindowCascade,
																				   this.WindowHorizontal,
																				   this.WindowVertical});
			this.Window.Text = "窗口(&W)";
			// 
			// WindowCascade
			// 
			this.WindowCascade.Index = 0;
			this.WindowCascade.Text = "层叠(&C)";
			this.WindowCascade.Click += new System.EventHandler(this.WindowCascade_Click);
			// 
			// WindowHorizontal
			// 
			this.WindowHorizontal.Index = 1;
			this.WindowHorizontal.Text = "水平排列(&H)";
			this.WindowHorizontal.Click += new System.EventHandler(this.WindowHorizontal_Click);
			// 
			// WindowVertical
			// 
			this.WindowVertical.Index = 2;
			this.WindowVertical.Text = "竖直排列(&V)";
			this.WindowVertical.Click += new System.EventHandler(this.WindowVertical_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.IsMdiContainer = true;
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.Text = "多窗口应用程序";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

        private void FileNew_Click(object sender, System.EventArgs e)
        {
            Form frmTemp=new Form();
            frmTemp.MdiParent=this;
            frmTemp.Text="Window#" + FormCount.ToString();
            FormCount++;
            frmTemp.Show();
        }

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

        private void WindowCascade_Click(object sender, System.EventArgs e)
        {
            this.LayoutMdi(MdiLayout.Cascade);
        }

        private void WindowHorizontal_Click(object sender, System.EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void WindowVertical_Click(object sender, System.EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileVertical);
        }
	}
}