using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace DelegateAndAsync
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class frmMain : System.Windows.Forms.Form
{
public delegate DateTime WorkHandler(int sleepMillisecond);
private System.Windows.Forms.Button CmdStart;
private System.Windows.Forms.RichTextBox RT001;
private System.Windows.Forms.ProgressBar PB001;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public frmMain()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.CmdStart = new System.Windows.Forms.Button();
this.RT001 = new System.Windows.Forms.RichTextBox();
this.PB001 = new System.Windows.Forms.ProgressBar();
this.SuspendLayout();
//
// CmdStart
//
this.CmdStart.Location = new System.Drawing.Point(104, 232);
this.CmdStart.Name = "CmdStart";
this.CmdStart.TabIndex = 0;
this.CmdStart.Text = "Start";
this.CmdStart.Click += new System.EventHandler(this.CmdStart_Click);
//
// RT001
//
this.RT001.Location = new System.Drawing.Point(8, 8);
this.RT001.Name = "RT001";
this.RT001.Size = new System.Drawing.Size(272, 96);
this.RT001.TabIndex = 1;
this.RT001.Text = "";
//
// PB001
//
this.PB001.Location = new System.Drawing.Point(8, 152);
this.PB001.Name = "PB001";
this.PB001.Size = new System.Drawing.Size(272, 23);
this.PB001.TabIndex = 2;
//
// frmMain
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.PB001);
this.Controls.Add(this.RT001);
this.Controls.Add(this.CmdStart);
this.Name = "frmMain";
this.Text = "Test";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new frmMain());
}
private void CmdStart_Click(object sender, System.EventArgs e)
{
MessageBox.Show("Start");
WorkHandler wHandle = new WorkHandler(this.StartWork);
wHandle.BeginInvoke(10000,new AsyncCallback(this.CompleteWork),wHandle);
}
/// <summary>
///
/// </summary>
/// <param name="sleepMillisecond"></param>
/// <returns></returns>
private DateTime StartWork(int sleepMillisecond)
{
this.CmdStart.Enabled = false;
int val = 0;
while(true)
{
val += 10/(sleepMillisecond/1000);
System.Threading.Thread.Sleep(1000/(sleepMillisecond/1000));
this.PB001.Value = val;
if(val == 100 || val > 100 )
break;
}
return DateTime.Now;
}
/// <summary>
/// 当StartWork完成后该做的任务
/// </summary>
/// <param name="ar"></param>
private void CompleteWork(IAsyncResult ar)
{
try
{
WorkHandler WH=(WorkHandler)ar.AsyncState;
DateTime dt = WH.EndInvoke(ar);
MessageBox.Show(this,dt.ToString());
this.CmdStart.Enabled = true;
}
catch(Exception e)
{
Console.Write(e);
}
}
private void CompleteWork()
{
}
}
}