当我们在读取数据的时候,或者处理大量数据的时候可能需要把鼠标设置为忙碌状态,等待返回结果。下面的代码可以帮忙实现这点:
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;namespace CursorThread
{public partial class Form1 : Form{public delegate int DoSomethingDelegate(int data);public Form1(){InitializeComponent();}static int DoSomething(int data){/// <sumary>/// Do something in this method/// </sumary>Thread.Sleep(300);return data++;}private void button1_Click(object sender, EventArgs e){this.Cursor = Cursors.Default;DoSomethingDelegate d = DoSomething;IAsyncResult ar = d.BeginInvoke(100,null, null);while (true){this.Cursor = Cursors.WaitCursor;if(ar.AsyncWaitHandle.WaitOne(50, false)){this.Cursor = Cursors.Arrow;break;}}//Get the resultint result = d.EndInvoke(ar);MessageBox.Show(result.ToString());}}
}
这样在点击鼠标后,鼠标会变成忙碌状态一直等待DoSomething这个方法调用结束,然后变回箭头状态。
当然你也可以这样:
// Set the status of the cursor
this.Cursor = Cursor.Busy;// Do Something// Set the status of the cursor
this.Cursor = Cursor.Arrow;
如果是在方法里面调用的话,不能使用this关键字,那你可以这样做:
private void Method()
{ Curosor.Current = Cursor.WaitCursor;/// Do SomethingCursor.Current = Cursor.Arrow;
}