我们先看下进度条效果

我点击了按钮后他会显示进度页面，进度完成后，进度条消失，其实也是比较简单的了。

我们需要一个进度条代码文件ProgressBar.htm（注意：是没有head这些标签的）

<script language="javascript"> function SetPorgressBar(pos) { //设置进度条居中 var screenWidth = document.body.offsetWidth; ProgressBarSide.style.width = Math.round(screenWidth / 2) + "px"; ProgressBarSide.style.left = Math.round(screenWidth / 4) + "px"; ProgressBarSide.style.top = "50px"; ProgressBarSide.style.height = "21px"; ProgressBarSide.style.display = "block"; //设置进度条百分比 ProgressBar.style.width = pos + "%"; ProgressText.innerHTML = pos + "%"; } function SetMaxValue(maxValue) { ProgressBarSide.style.width = maxValue + "px"; } //完成后隐藏进度条 function SetCompleted() { ProgressBarSide.style.display = "none"; } function SetTitle(title) { ProgressTitle.innerHTML = title; }</script><div id="ProgressBarSide" style="position: absolute; height: 21px; width: 100px; color: Silver; border-width: 1px; border-style: Solid; display: block"> <div id="ProgressBar" style="position: absolute; height: 21px; width: 0%; background-color: #1475BB"> </div> <div id="ProgressText" style="position: absolute; height: 21px; width: 100%; text-align: center"> </div> <div id="ProgressTitle" style="position: absolute; height: 21px; top: 21px; width: 100%; text-align: center"> </div></div>

然后需要一个进度条类ProgressBar.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.IO;namespace ZhuoYueE.Dop.Web.UI{ /// <summary> ///显示进度条 /// </summary> public class ProgressBar : System.Web.UI.Page { /// <summary> /// 最大值 /// </summary> private int MaxValue { get { if (ViewState["MaxValue"] == null) { return 0; } else { return Convert.ToInt32(ViewState["MaxValue"]); } } set { ViewState["MaxValue"] = value; } } /// <summary> /// 当前值 /// </summary> private int ThisValue { get { if (ViewState["ThisValue"] == null) { return 0; } else { return Convert.ToInt32(ViewState["ThisValue"]); } } set { ViewState["ThisValue"] = value; } } /// <summary> /// 当前页面 /// </summary> System.Web.UI.Page m_page; /// <summary> /// 功能描述:构造函数 /// 作　　者:huangzh /// 创建日期:2016-05-06 11:54:34 /// 任务编号: /// </summary> /// <param name="page">当前页面</param> public ProgressBar(System.Web.UI.Page page) { m_page = page; } public void SetMaxValue(int intMaxValue) { MaxValue = intMaxValue; } /// <summary> /// 功能描述:初始化进度条 /// 作　　者:huangzh /// 创建日期:2016-05-06 11:55:26 /// 任务编号: /// </summary> public void InitProgress() { //根据ProgressBar.htm显示进度条界面 string templateFileName = AppDomain.CurrentDomain.BaseDirectory + "ProgressBar.htm"; StreamReader reader = new StreamReader(@templateFileName, System.Text.Encoding.GetEncoding("GB2312")); string strhtml = reader.ReadToEnd(); reader.Close(); m_page.Response.Write(strhtml); m_page.Response.Flush(); } /// <summary> /// 功能描述:设置标题 /// 作　　者:huangzh /// 创建日期:2016-05-06 11:55:36 /// 任务编号: /// </summary> /// <param name="strTitle">strTitle</param> public void SetTitle(string strTitle) { string strjsBlock = "<script>SetTitle('" + strTitle + "'); </script>"; m_page.Response.Write(strjsBlock); m_page.Response.Flush(); } /// <summary> /// 功能描述:设置进度 /// 作　　者:huangzh /// 创建日期:2016-05-06 11:55:45 /// 任务编号: /// </summary> /// <param name="percent">percent</param> public void AddProgress(int intpercent) { ThisValue = ThisValue + intpercent; double dblstep = ((double)ThisValue / (double)MaxValue) * 100; string strjsBlock = "<script>SetPorgressBar('" + dblstep.ToString("0.00") + "'); </script>"; m_page.Response.Write(strjsBlock); m_page.Response.Flush(); } public void DisponseProgress() { string strjsBlock = "<script>SetCompleted();</script>"; m_page.Response.Write(strjsBlock); m_page.Response.Flush(); } }}

然后就是调用方法了，调用很简单，在页面的按钮事件或者其他什么地方加入代码，如在按钮事件里这么用

protected void btnImport_Click(object sender, EventArgs e) { ProgressBar pb = new ProgressBar(this); pb.SetMaxValue(110); pb.InitProgress(); pb.SetTitle("这是一个测试数据"); for (int i = 1; i <= 110; i++) { pb.AddProgress(1); //此处用线程休眠代替实际的操作，如加载数据等 System.Threading.Thread.Sleep(50); } pb.DisponseProgress(); }

怎么样，是不是很简单呢。

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