Pro ASP.NET 3.5 Server Controls and AJAX Components

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Rob Cameron and Dale Michalk

"Pro ASP.NET 3.5 Server Controls and AJAX Components"

gif" OverImageUrl="ex1_selected.gif"
NavigateUrl="http://www.apress.com" />
OverImageUrl="ex2_selected.gif"
NavigateUrl="http://asp.net" EnableClientScript="True" />

Listing 8-6. The RolloverImage Web Form Code-Behind Class File
using System;
namespace ControlsBook2Web.Ch08
{
public partial class RolloverImage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
}
CHAPTER 8 ?– INTEGRATING CL IENT-SIDE SCRIPT 365
Analyzing the Rollover HTML Output
The rollover functionality lives in the emitted hyperlink tags in the HTML output. The top of
the HTML form also contains the image-swapping function called by the onmouseover and
onmouseout client event handlers attached to the hyperlinks, as shown here:

The Image control output shows the tags wrapped by an tag and the client-script
event mappings for onmouseover and onmouseout:
onmouseover="__Image_Swap('ctl00$ControlsBookContent$image1',
'/ControlsBook2Web/Ch08/ex1_selected.

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Rob Cameron and Dale Michalk

"Pro ASP.NET 3.5 Server Controls and AJAX Components"