ASP.NET实现进度条


终于找到一个ASP.NET实现进度条的例子.

  建立一个WEB工程,添加新项->HTML页面,命名为ProgressBar.htm,内容如下:

  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

  <html xmlns="http://www.w3.org/1999/xhtml" id="mainWindow">

  <head>

  <title>无标题页</title>

  <script language="javascript">

  function SetPorgressBar(pos)

  {

  //设置进度条居中

  var screenHeight = window["mainWindow"].offsetHeight;

  var screenWidth = window["mainWindow"].offsetWidth;

  ProgressBarSide.style.width = Math.round(screenWidth / 2);

  ProgressBarSide.style.left = Math.round(screenWidth / 4);

  ProgressBarSide.style.top = Math.round(screenHeight / 2);

  ProgressBarSide.style.height = "21px";

  ProgressBarSide.style.display = "";

  //设置进度条百分比

  ProgressBar.style.width = pos + "%";

  ProgressText.innerHTML = pos + "%";

  }

  //完成后隐藏进度条

  function SetCompleted()

  {

  ProgressBarSide.style.display = "none";

  }

  </script>

  </head>

  <body>

  <div id="ProgressBarSide" style="position:absolute;height:21x;width:100px;color:Silver;border-width:1px;border-style:Solid;display:none">

  <div id="ProgressBar" style="position:absolute;height:21px;width:0%;background-color:#3366FF"></div>

  <div id="ProgressText" style="position:absolute;height:21px;width:100%;text-align:center"></div>

  </div>

  </body>

  </html>

  后台代码,Default.aspx.cs:

  using System;

  using System.Data;

  using System.Configuration;

  using System.Web;

  using System.Web.Security;

  using System.Web.UI;

  using System.Web.UI.WebControls;

  using System.Web.UI.WebControls.WebParts;

  using System.Web.UI.HtmlControls;

  using System.Threading;

  using System.IO;

  public partial class _Default : System.Web.UI.Page

  {

  private void beginProgress()

  {

  //根据ProgressBar.htm显示进度条界面

  string templateFileName = Path.Combine(Server.MapPath("."), "ProgressBar.htm");

  StreamReader reader = new StreamReader(@templateFileName,System.Text.Encoding.GetEncoding("GB2312"));

  string html = reader.ReadToEnd();

  reader.Close();

  Response.Write(html);

  Response.Flush();

  }

  private void setProgress(int percent)

  {

  string jsBlock = "<script>SetPorgressBar('" + percent.ToString() + "'); </script>";

  Response.Write(jsBlock);

  Response.Flush();

  }

  private void finishProgress()

  {

  string jsBlock = "<script>SetCompleted();</script>";

  Response.Write(jsBlock);

  Response.Flush();

  }

  private void Page_Load(object sender, System.EventArgs e)

  {

  beginProgress();

  for (int i = 1; i <= 100; i++)

  {

  setProgress(i);

  //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);

  }

  finishProgress();

  }

  }



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