[ASP.net] Loading

The method is simple. Let's take a look at the code!
It is packaged into a control. Download address:
Http://upserver4.ys168.com/ys168up/D1/YY1.aspx? F = signature
The following is the source code:
==========================================
Using System;
Namespace HDControl
{
/// <Summary>
/// Summary description for Loading.
/// </Summary>
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;
}
/// <Summary>
/// Load script to page
/// </Summary>
Public void Load ()
{
If (! This. Sender. IsClientScriptBlockRegistered ("startScript "))
{
This. Sender. RegisterClientScriptBlock ("startScript", this. Start ());
This. Sender. RegisterStartupScript ("endScript", this. End ());
}
}
/// <Summary>
/// Script start.
/// </Summary>
/// <Returns> </returns>
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 ("<div id =" loading "> ");