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//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;
}
}
}