asp.net 页面加载进度 asp
程序员文章站
2022-03-25 16:29:24
...
- 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();
- }
- private void beginProgress()
- {
- //根据ProgressBar.htm显示进度条界面
- string templateFileName = System.IO.Path.Combine(Server.MapPath("."), "ProgressBar.htm");
- System.IO.StreamReader reader = new System.IO.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();
- }
- <!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" type="text/javascript">
- function SetPorgressBar(pos) {
- //设置进度条居中
- var screenHeight = document.body.offsetHeight;
- var screenWidth = document.body.offsetWidth;
- document.getElementById("ProgressBarSide").style.width = Math.round(screenWidth / 2);
- document.getElementById("ProgressBarSide").style.left = Math.round(screenWidth / 4);
- document.getElementById("ProgressBarSide").style.top = Math.round(screenHeight / 2);
- document.getElementById("ProgressBarSide").style.height = "21px";
- document.getElementById("ProgressBarSide").style.display = "";
- //设置进度条百分比
- document.getElementById("ProgressBar").style.width = pos + "%";
- document.getElementById("ProgressText").innerHTML = pos + "%";
- }
- //完成后隐藏进度条
- function SetCompleted() {
- document.getElementById("ProgressBarSide").style.display = "none";
- }
- </script>
- </head>
- <body>
- <div id="ProgressBarSide" style="position:absolute;height:21px;width:100px;color:Silver;border-width:1px;border-style:Solid;display:none">
- <div id="ProgressBar" style="position:absolute;height:21px;width:0%;background-color: green"></div>
- <div id="ProgressText" style="position:absolute;height:21px;width:100%;text-align:center"></div>
- </div>
- </body>
- </html>
注意:
1. Response.Write() 中的内容必须大于256字节,Flush 才有效.
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