form1.cs

原代码详细说明是关于c++方面的希望可以帮助大家使用

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

namespace Exam2_13
{
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		private System.Windows.Forms.Button button5;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.button5 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button1 = new System.Windows.Forms.Button();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label1.Location = new System.Drawing.Point(16, 8);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(381, 22);
			this.label1.TabIndex = 0;
			this.label1.Text = "label1";
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.button5);
			this.groupBox1.Controls.Add(this.button4);
			this.groupBox1.Controls.Add(this.button3);
			this.groupBox1.Controls.Add(this.button2);
			this.groupBox1.Controls.Add(this.button1);
			this.groupBox1.Location = new System.Drawing.Point(14, 36);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(380, 43);
			this.groupBox1.TabIndex = 1;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "档位模拟";
			// 
			// button5
			// 
			this.button5.Location = new System.Drawing.Point(290, 17);
			this.button5.Name = "button5";
			this.button5.Size = new System.Drawing.Size(50, 20);
			this.button5.TabIndex = 4;
			this.button5.Tag = "4";
			this.button5.Text = "倒档";
			this.button5.Click += new System.EventHandler(this.button1_Click);
			// 
			// button4
			// 
			this.button4.Location = new System.Drawing.Point(226, 17);
			this.button4.Name = "button4";
			this.button4.Size = new System.Drawing.Size(50, 20);
			this.button4.TabIndex = 3;
			this.button4.Tag = "3";
			this.button4.Text = "3档";
			this.button4.Click += new System.EventHandler(this.button1_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(162, 17);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(50, 20);
			this.button3.TabIndex = 2;
			this.button3.Tag = "2";
			this.button3.Text = "2档";
			this.button3.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(98, 17);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(50, 20);
			this.button2.TabIndex = 1;
			this.button2.Tag = "1";
			this.button2.Text = "1档";
			this.button2.Click += new System.EventHandler(this.button1_Click);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(34, 17);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(50, 20);
			this.button1.TabIndex = 0;
			this.button1.Tag = "0";
			this.button1.Text = "启动";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(407, 85);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.label1);
			this.Name = "Form1";
			this.Text = "事件示例";
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion
		static void Main() 
		{
			Application.Run(new Form1());
		}
		private void button1_Click(object sender, System.EventArgs e)
		{
			Break b=new Break();//建立档类实例
            b.ChangeBreak+=new BreakHandler(b_ChangeBreak);//事件挂接
			BreakArgs ee=new BreakArgs();//新建BreakArgs实例，并传入档为数值
			ee.Level=Convert.ToInt32(((Button)sender).Tag);
			b.OnChangeBreak(sender,ee);//引发事件
		}
		private void b_ChangeBreak(object sender,BreakArgs e)
		{
			switch(e.Level)
			{
                case 0:
					label1.Text="您启动了汽车，时速10";
					break;
				case 1:
					label1.Text="当前档位：1档，时速20";
					break;
				case 2:
					label1.Text="当前档位：2档，时速40";
					break;
				case 3:
					label1.Text="当前档位：3档，时速80";
					break;
				case 4:
					label1.Text="当前档位：倒档，时速-5";
					break;
			}
		}
	}
	public delegate void BreakHandler(object sender,BreakArgs e);
	//建立能够传递档位数值的参数类型
	public class BreakArgs:EventArgs
	{
		private int i;
		public int Level
		{
			get{  return i;}
			set{  i=value;}
		}
	}
	//建立一个类，该类声明了一个事件
	public class Break
	{
		public event BreakHandler ChangeBreak;
		public void OnChangeBreak(object sender,BreakArgs e)
		{
			if(ChangeBreak!=null)
			{ 
				ChangeBreak(sender,e);
			}
		}
	}
}