VS 2008 Simple Image Toggle With AJAX Updatepanel And Timer

Aug 10, 2010

I don't understand what the problem is with this. It should be a simple operation yet it doesn't work.

I found samples on how to do this, when I apply the sample, it doesn't work.

In my page I have this:


When I run the page, after 5 seconds it switches from the first image to the second image and never switches back to the first image.

When I debug with a break in the code-behind, it looks like the timer ticks twice for every tick. So, when the image is sample2, it then changes back to sample1 and then immediately ticks again and switches back to sample2 with no update-panel refresh in between.

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