AJAX :: Image In Updatepanel Not Refreshed?

Jun 14, 2010

I'm writing a small photo album application and having some problem of refreshing the original images in the updatepanel. I have two updatepanels, one on the left contains a gridview to display image thumbs, and the other in the right contains an image control. When click on the thumb on the left, the file name of the image on the right will be inserted using the CommandArgument value. However, when I clicked the thumb, nothing happened. Instead of refreshing an image, I put a label and it worked fine. The following is my aspx side code and code behind.

// code of aspx

[Code]....

// code of aspx.cs

[Code]....

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[code]....

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