Can you tell me how to use this function? Can't find an
example ANYWHERE.

I don't understand the input parameter to this function.
For example, if I've enabled page output caching for
form1.aspx in my website:  

http://mysite/myapp/form1.aspx

then how would I explicitly flush that page from the page
output cache by clicking a button on another page? Here's
the button click handler:

form2.aspx.cs

private void Button1_Click(object sender, System.EventArgs
e)
 {
 HttpResponse.RemoveOutputCacheItem("/form1.aspx");
 }

but that doesn't seem to work. The official documention on
MSDN states that the path parameter represents:

"The physical path to the items that are removed from the
cache."

Well, this is unclear to me.....do I need a physical
location on the machine to a system cache location? Or a
physical location to the physical page location as it sits
in the website? An example from Microsoft would sure be
appreciated....

thanks,

bob