[ASP.net]Loading制作

方法很简单。把代码放上来大家看看！
打了包成了个控件。下载地址：
http://upserver4.ys168.com/ys168up/D1/YY1.aspx?f=050P1D8E0E3E5D9D5G6ALI7A00A05AKA03D6A00A08A08I5F9G0E0D9E0D8D6E1A24E6E1D9E5D9C3
下面是源码：
===================================
using System;
namespace HDControl
{
///

/// Summary description for Loading.
///

public class Loading
{
private System.Web.UI.Page Sender;
private string strImagePath;
public object Page
{
get
{
return Sender;
}
set
{
Sender = (System.Web.UI.Page)value;
}
}
public string ImageMapth
{
get
{
return strImagePath;
}
set
{
strImagePath = value;
}
}
public Loading()
{
//
}
public Loading( object sender )
{
Page = sender;
}
public Loading( object sender,string ImageMapth )
{
Page = sender;
this.strImagePath = ImageMapth;
}
///

/// Load script to page
///

public void Load()
{
if ( !this.Sender.IsClientScriptBlockRegistered( "startScript" ) )
{
this.Sender.RegisterClientScriptBlock( "startScript",this.Start() );
this.Sender.RegisterStartupScript( "endScript",this.End() );
}
}
///

/// Script start.
///

///
private string Start()
{
string strStyle = "BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none";
System.Text.StringBuilder strScript = new System.Text.StringBuilder();
strScript.Append( "