c#委托和简单多线程
转自百度文库:
委托:
Public void setfunction (string s)
{
For (int I;i<10;i++)
{
……
}
}
创建委托:
Delegate void setmain(string s);
Setmain setmaintest=new setmain(setfunction);
调用委托:
Label.Invoke(setmain,new object[]{i.Tostring()});
using System;
using System.Threading;
using System.Windows.Forms;
namespace ThreadTest
{
public partial class Form1 : Form {
private Thread thread1; //定义线程
delegate void set_Text(string s); //定义委托
set_Text Set_Text; //定义委托
public Form1() {
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
label1.Text = "0";
Set_Text = new set_Text(set_lableText); //实例化
}
private void button1_Click(object sender, EventArgs e)
{
thread1 = new Thread(new ThreadStart(run));
thread1.Start();
}
private void set_lableText(string s) //主线程调用的函数
{
label1.Text = s;
}
private void run()
{
for (int i = 0; i < 101; i++)
{
label1.Invoke(Set_Text, new object[] { i.ToString() }); //通过调用委托,来改变lable1的值
Thread.Sleep(1000); //线程休眠时间,单位是ms
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (thread1.IsAlive) //判断thread1是否存在,不能撤消一个不存在的线程,否则会引发异常
{
thread1.Abort(); //撤消thread1
}
}
}
}