浅析AJAX实例：动态进度条_AJAX教程
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1.建立进度条html页面
progressbar.htm
<script language="javascript">
function setPgb(pgbID, pgbValue)
{
if ( pgbValue <= 100 )
{
//debugger;
if (lblObj = document.getElementById(pgbID+'_label'))
{
lblObj.innerHTML = pgbValue + '%'; // change the label value
}
if ( pgbObj = document.getElementById(pgbID) )
{
var divChild = pgbObj.children[0];
pgbObj.children[0].style.width = pgbValue + "%";
}
window.status = "数据读取" + pgbValue + "%，请稍候";
}
if ( pgbValue == 100 )
{
window.status = "数据读取已经完成";
proBar.style.display="none";
Table1.style.display="none";
}
}
</script>
<html>
<head>
<link rel="stylesheet" type="text/css" href="common.css" />
</head>
<body topmargin="0" leftmargin="0">
<table width="100%" height="100%" ID="Table1" runat=server>
<tr>
<td align="center" valign="middle">
<DIV class="bi-loading-status" id="proBar" style="DISPLAY: ; LEFT: 425px; TOP: 278px">
<DIV class="text" id="pgbMain_label" align="left"></DIV>
<DIV class="progress-bar" id="pgbMain" align="left">
<DIV STYLE="WIDTH:10%"></DIV>
</DIV>
</DIV>
</td>
</tr>
</table>
</body>
</html>2.建立样式common.css.bi-loading-status {}{
/**//*position: absolute;*/
width: 150px;
padding: 1px;
overflow: hidden;
}
.bi-loading-status .text {}{
white-space: nowrap;
overflow: hidden;
width: 100%;
text-overflow: ellipsis;
padding: 1px;
}
.bi-loading-status .progress-bar {}{
border: 1px solid ThreeDShadow;
background: window;
height: 10px;
width: 100%;
padding: 1px;
overflow: hidden;
}
.bi-loading-status .progress-bar div {}{
background: Highlight;
overflow: hidden;
height: 100%;
filter: Alpha(Opacity=0, FinishOpacity=100, Style=1, StartX=0, StartY=0, FinishX=100, FinishY=0);
}
3.建立测试页面
3.1html代码<HTML>
<HEAD>
<title>progressbar</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<%=fixedHeader()%>
</form>
</body>
</HTML>3.2cs代码
首先usingusing System.Threading;
using System.IO;
using System.Text;然后添加代码
public class progressbar : System.Web.UI.Page
{
Page_Load#region Page_Load
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
string strFileName =Server.MapPath("progressbar.htm" );
StreamReader sr = new StreamReader( strFileName, System.Text.Encoding.Default );
string strHtml = sr.ReadToEnd();
Response.Write( strHtml );
sr.Close();
Response.Flush();
Thread thread = new Thread(new ThreadStart(ThreadProc));
thread.Start();
LoadData();//load数据
thread.Join();
}
}
#endregion
fixedHeader#region fixedHeader
protected string fixedHeader()
{
StringBuilder s=new StringBuilder();
s.Append(@"<table width='100%' border='1' cellspacing='0' style='MARGIN-TOP:-2px'>");
s.Append(@"<TR class='fixedHeaderTr' style='BACKGROUND:navy;COLOR:white'>");
s.Append(@"<TD nowrap>Header A</TD>");
s.Append(@"<TD nowrap>Header B</TD>");
s.Append(@"<TD nowrap>Header C</TD>");
s.Append(@"</TR>");
for(int m=0;m<100;m++)
{
s.Append(@"<TR>");
s.Append(@"<TD>A").Append(m).Append("</TD>");
s.Append(@"<TD>B").Append(m).Append("</TD>");
s.Append(@"<TD>C").Append(m).Append("</TD>");
s.Append(@"</TR>");
}
s.Append(@"</table>");
return s.ToString();
}
#endregion
ThreadProc#region ThreadProc
private void ThreadProc()
{
string strScript = "<script>setPgb('pgbMain','{0}');</script>";
for ( int i = 0; i <= 100; i++ )
{
System.Threading.Thread.Sleep(10);
Response.Write( string.Format( strScript, i));
Response.Flush();
}
}
#endregion
LoadData#region LoadData
private void LoadData()
{
for(int m=0;m<90000;m++)
{
for(int i=0;i<90000;i++)
{
}
}
}
#endregion
Web Form Designer generated code#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/**//// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
分享：AJAX教程之AJAX的jQuery实现入门(一)Ajax在网上已经叫喊了好几年了, 但是还是有很多像我这样的新手没掌握它, 像这样能改善交互体验的技术不会用真是很遗憾呢. 所以我就把我学到的记录下来,供高手指正,新手共勉. 首先,稍微扫扫盲: AJAX = Asynchronous JavaScript And XML , 这里有三个关键词: A
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AJAX教程-浅析AJAX实例：动态进度条
。