how to clear or replace a cached image

Question

I know there are many ways to prevent image caching (such as via META tags), as well as a few nice tricks to ensure that the current version of an image is shown with every

Answer 1

When changing the image filename is not an option then use a server side session variable and a javascript window.location.reload() function. As follows:

After Upload Complete:

Session("reload") = "yes"

On page_load:

If Session("reload") = "yes" Then
    Session("reload") = Nothing
    ClientScript.RegisterStartupScript(Me.GetType), "ReloadImages", "window.location.reload();", True)
End If

This allows the client browser to refresh only once because the session variable is reset after one occurance.

Hope this helps.