>This photo is shown by setting the imageUrl property to an aspx page. The refresh doesn't occur when the aspx photo page is shown and then moving to another record that shows another photo the same way. I wonder if there is something special I need to do to remove the ShowPhoto.aspx page and then recall it. If you move to a record with no image and then back to one with an image it works fine. Any ideas?
>Tim

If you're sure it's not being caused by the Ajax control (simple test - there is a property to temporarily disable Ajax on the control itself), it may be cause because the browser doesn't think anything in the URL has changed, so it doesn't request the image again. You can verify if this is the case by doing something like appending a random value to the image url on each postback, ex:

Random rand = new Random();
this.imgBoardPhoto.ImageUrl = @"~/ShowPhoto.aspx?i=" + rand.Next().ToString();