//本文演示跑马灯

//用到了线程、同步委托

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

using System.IO;

namespace 跑马灯

{

public partial class Form1 : Form

{ public List<Label> lists = new List<Label>();//lists类型为Label

public delegate void MsgDelegate();//声明委托

public MsgDelegate msgDelegate; //声明委托变量

public bool start = new bool();

public bool stop=new bool();

public Form1()

{ InitializeComponent();

foreach (var item in this.Controls) //遍历所有Label,赋值到lists

{ if (item.GetType().ToString().Contains("Label"))

{ Label label = (Label)item;

lists.Add(label);

}

}

timer1.Enabled = true;//启动定时器

}

private void timer1_Tick(object sender, EventArgs e)//定义器开线程

{ timer1.Enabled = false;

System.Threading.Thread thread = new Thread(loop);//开线程

thread.Start();//线程启动

}

public void loop()//死循环

{ msgDelegate = new MsgDelegate(disp);//创建委托

while (true)

{ if (start)

{ start_histoy = true;

this.Invoke(msgDelegate); //调用同步委托

}

Application.DoEvents(); //防止界面停止响应

}

}

public void disp()//显示跑马灯

{ for (int i = 0; i < lists.Count(); i++)

{ Label label = lists[i];

label.BackColor = Color.Red;

Application.DoEvents();//防止界面停止响应

Thread.Sleep(100);

if (stop) break;

label.BackColor = Color.White;

}

}

private void button1_Click(object sender, EventArgs e)//开始

{ if (!start)

{ start = true;

stop = false;

}

}

private void button2_Click(object sender, EventArgs e)//停止

{ stop = true;

start = false;

}

}

}

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