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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; namespace 计时器 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { label1.Text = DateTime.Now.ToString(); System.Timers.Timer t = new System.Timers.Timer(1000);//实例化Timer类,设置间隔时间为1000毫秒 就是1秒; t.Elapsed += new System.Timers.ElapsedEventHandler(theout);//到达时间的时候执行事件; t.AutoReset = true;//设置是执行一次(false)还是一直执行(true); t.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件; } public void theout(object source, System.Timers.ElapsedEventArgs e) { this.Invoke(new TextOption(f));//invok 委托实现跨线程的调用 } delegate void TextOption();//定义一个委托 void f() { label1.Text = DateTime.Now.ToString();//调用内容,并用lable1显示出来。。。 } } }
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