System.Web.UI.WebControls.Image

[Roberto Carcione]

Hi at all,
in have a webform (.aspx) where i display such an image i modify each time
he user press a button. The image (the control is
System.Web.UI.WebControls.Image) is different each time the user press the
button. So when the user presses the button i change the property ImageUrl
to the new image i created. But the file, where i create the new image, is
always the same, so the user doesn't see the new image...because the image i
created doesnt' download from explorer because the file already exists into
the temporary explore directory....
So, if you understand, how can i "invalidate" or "force" this control so
internet explorer can download the same image file (but the image into the
file is different)?

thanks

roberto carcione