C#跨线程访问控件

C#跨线程访问控件

线程实现两个lable标签显示：

public partial class FrmThreadControl : Form { public FrmThreadControl() { InitializeComponent(); } private void btnExecute1_Click(object sender, EventArgs e) { int a = 0; Thread objThread1 = new Thread(delegate() { for (int i = 1; i <= 20; i++) { a += i; if (this.lblResult1.InvokeRequired)//判断是否调用Invoke方法 { this.lblResult1.Invoke(new Action(s => { this.lblResult1.Text = s; }), a.ToString()); } Thread.Sleep(200); } }); objThread1.IsBackground = true;//设置为后台线程（通常都要这样设置） objThread1.Start(); } private void btnExecute2_Click(object sender, EventArgs e) { int a = 0; Thread objThread2 = new Thread(() => { for (int i = 1; i <= 50; i++) { a += i; if (this.lblResult2.InvokeRequired)//判断是否调用Invoke方法 { this.lblResult2.Invoke(new Action(s => { this.lblResult2.Text = s; }), a.ToString()); } Thread.Sleep(100); } }); objThread2.IsBackground = true; objThread2.Start(); } }

异步实现计算方法：

多线程Thread的基础使用：

public partial class FrmThead : Form { public FrmThead() { InitializeComponent(); } //执行任务1 private void btnExecute1_Click(object sender, EventArgs e) { int a = 0; //ThreadStart 委托定义：public delegate void ThreadStart() Thread objThread1 = new Thread(delegate() { for (int i = 1; i <= 20; i++) { a += i; Console.WriteLine(a + " "); Thread.Sleep(500); } }); objThread1.IsBackground = true;//设置为后台线程（通常都要这样设置） objThread1.Start(); } //执行任务2 private void btnExecute2_Click(object sender, EventArgs e) { Thread objThread2 = new Thread(() => { for (int i = 1; i <= 50; i++) { Console.WriteLine("---------------a" + i + "----------------"); Thread.Sleep(100); } }); objThread2.IsBackground = true;//设置为后台线程（通常都要这样设置） objThread2.Start(); } }}

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