For any body that's interested I have found a solution to this problem
that works for me.
What I do is use javascript to detect whether the close button has been
clicked on the browser and launch a pop-up window, which populates my
database and ends my session if it has. The basic code is here;
//This Code goes in the page_load event for each page in the
application. This code is just registering the javascript.
if(!this.IsClientScriptBlockRegistered("clientScri pt"))
this.Page.RegisterClientScriptBlock("clientScript" ,strScript);
//This code goes in the Body html tag of each page in the application
<Body onunload="logoff('logout.aspx')">
//This is the javascript to check for the browser close button and open
a log-off
//pop-up window (strScript in the example above).
//You can type this javascript directly into the html of each page and
it has
//the same effect, but there is less manipulation involved if you store
it in a class.
//The important bit is "if (event.clientY < 0)", becuase this
determines whether or not
//the close (x) button has been clicked, by looking at the mouse
pointer location.
<script language=javascript>
<!--
var newwindow = ''
function logoff(url)
{
if (event.clientY < 0)
{
if (!newwindow.closed && newwindow.location)
{
newwindow.location.href = url;
}
else
{
newwindow=window.open(url,'Logout','height=150,wid th=100');
if (!newwindow.opener) newwindow.opener = self;
}
}
if (window.focus)
{
newwindow.focus()
}
return false;
}
// -->
</script>
//This is the code on the Page_Load event of logoff.aspx. In this
example I
//use Session["strUserID"] to determine whether or
//not the user has logged in to the web-site, as this is optional. The
pop-up window
//closes automatically if the user has not logged in.
//I have a call to a function which populates my database log info here
first, then;
if((string)Session["strUserID"] == "")
{
Page.RegisterStartupScript("CloseScript","<script language=javascript>
window.close(); </script>");
}
else
{
lblMessage.Text = "<p align=center>Brands Manual<br><br>Logout
Successful<br><br><a
href='javascript
:window.close()'>Close</a></font>";
}
Session.Abandon();
