The technique of hiding and showing the image also remains the same as we had discussed in Method 1.
The entire source code and mark up is as shown below: Well those were the three different methods of displaying progress to the user while the Update Panel updates its contents.
You can open the sample website by launching Visual Web Developer, selecting the menu option File, Open Website, and browsing to the Sample Web Site folder in the unzipped download. NET AJAX Control Toolkit is not installed in the Global Assembly Cache.
For all the three approaches, I have used a image to show a spinning gear kind of a progress bar while the Update Panel is performing some action.
The image can be found with the source code for this article over here.
The Page Request Manager class handles the partial-page updates of the Update Panel.
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