C#实现进度条(js版本和C#版本)

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<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<SCRIPT LANGUAGE=javascript>

</SCRIPT>
</HEAD>
<BODY LANGUAGE=javascript onload="return window_onload()">
<P> </P>
<P> </P>
<P> </P>
<P> </P>
<P> </P>
<P> </P>

<table border="0" cellpadding="0" cellspacing="0" width="50%" align=center>
<tr>
<td width="51%" noWrap>
<p align="right"><FONT face=宋体 color=navy
size=2>正在加载：</FONT></p> </td>
<td width="4%" bordercolor="#000000">
<marquee align="middle" direction="right" scrolldelay="1" bgcolor="gainsboro" scrollamount="2" style="BORDER-RIGHT: black 1px outset; BORDER-TOP: black 1px outset; FONT-SIZE: xx-small; BORDER-LEFT: black 1px outset; WIDTH: 133px; COLOR: #000080; BORDER-BOTTOM: black 1px outset; HEIGHT: 13px"
behavior="slide"
>███████████████████████████████████████████████████████████████████████████████</marquee>
</td><td width="45%" align=left><div id=per></div></td>
</tr>
</table>

</BODY>
</HTML>

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对于加载时间比较长的ASP.NET页面，我们可以在客户端浏览器中显示进度条来显示页面正在装载。下面就是具体的实现过程：

新建项目，名字为WebPortal，在项目类型中选择Visual C#项目或者Visual Basic项目都可；
在模板类型中选择ASP.NET Web应用程序；
位置里输入：http://localhost/WebPortal；
添加新项：名字为ShowProgress的Web窗体。
在您的Web窗体ShowProgress.aspx上添加任何其他的Web服务器控件。
在ShowProgress.aspx上单击右键，点“查看代码”，在最上面输入：
Visual C# .NET代码
using System.Threading;

Visual Basic .NET代码
Imports System.Threading

在Page_Load事件里输入： Visual C# .NET代码
Response.Write("<div id='mydiv' >");
Response.Write("_");
Response.Write("</div>");
Response.Write("<script>mydiv.innerText = '';</script>");
Response.Write("<script language=javascript>;");
Response.Write("var dots = 0;var dotmax = 10;function ShowWait()");
Response.Write("{var output; output = '正在装载页面';dots++;if(dots>=dotmax)dots=1;");
Response.Write("for(var x = 0;x < dots;x++){output += '·';}mydiv.innerText = output;}");
Response.Write("function StartShowWait(){mydiv.style.visibility = 'visible'; ");
Response.Write("window.setInterval('ShowWait()',1000);}");
Response.Write("function HideWait(){mydiv.style.visibility = 'hidden';");
Response.Write("window.clearInterval();}");
Response.Write("StartShowWait();</script>");
Response.Flush();
Thread.Sleep(10000);

Visual Basic .NET代码
Response.Write("<div id='mydiv' >")
Response.Write("_")
Response.Write("</div>")
Response.Write("<script>mydiv.innerText = '';</script>")
Response.Write("<script language=javascript>;")
Response.Write("var dots = 0;var dotmax = 10;function ShowWait()")
Response.Write("{var output; output = '正在装载页面';dots++;if(dots>=dotmax)dots=1;")
Response.Write("for(var x = 0;x < dots;x++){output += '·';}mydiv.innerText = output;}")
Response.Write("function StartShowWait(){mydiv.style.visibility = 'visible'; ")
Response.Write("window.setInterval('ShowWait()',1000);}")
Response.Write("function HideWait(){mydiv.style.visibility='hidden';")
Response.Write("window.clearInterval();}")
Response.Write("StartShowWait();</script>")
Response.Flush()
Thread.Sleep(10000)

在ShowProgress.aspx窗体的html的中输入：
<script>
HideWait();
</script>