update panel in IE not working but works in chrome

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ASP.NET

Ajax

UpdatePanel

trigger

Hey Everyone,

I have a some code inside of an update panel. It contains textboxes, drop downs, an image and a button. When the button is clicked it is supposed to refresh the image with the new content. My update mode is conditional and I am calling the update() after the button is clicked but in IE the image is not refreshed with the correct information, but is working correctly in Chrome.

I had to add a PostBackTrigger in order to get it to work correctly.

I have tried passing in a unique image id, so IE doesnt cache the image but hasnt worked. I have also tried the below but to no avail.

Response.Cache.SetCacheability(HttpCacheability.NoCache);

and

Response.Cache.SetExpires(DateTime.Now.AddDays(-10));

I have been looking feveriously for a solution but still havent found anything. Any help would be great

thanks
Bobby