线程和UI交互的普遍用法

 

using

 

System;

 

using

 

System.Windows.Forms;

 

using

 

System.Threading;

 

namespace

 

ThreadBeginInvokeAPP

{

 

 

publicpartialclassmainFrm : Form

 

{

 

 

public mainFrm()

{

 

InitializeComponent();

 

 

Thread t = newThread(newThreadStart(ChangeLabel));

t.Start();

//运行线程

}

 

 

privatedelegatevoidSetLabelTextDelegate(int number); //委托

 

privatevoid mainFrm_Load(object sender, EventArgs e)

{

 

}

 

 

privatevoid ChangeLabel() //待执行方法

{

 

 

for (int i = 0; i < 100; ++i)

{

 

SetLabelText(i);

 

 

Thread.Sleep(1000);

}

 

}

 

 

privatevoid SetLabelText(int number)

{

 

 

if (this.InvokeRequired) //如果需要进行ui和线程的交互

{

 

 

this.BeginInvoke(newSetLabelTextDelegate(SetLabelText), newobject[] { number }); //进行委托代理

}

 

 

else//如果不必进行ui和线程的交互

{

 

 

this.lblNum.Text = number.ToString(); //直接运行

}

 

}

 

 

privatevoid mainFrm_FormClosing(object sender, FormClosingEventArgs e)

{

 

 

Environment.Exit(0); //退出线程

 

 

}

 

}

 

}