Application_Error does not fire?

Question

In Webform1.aspx.cs:

protected void Page_Load(object sender, EventArgs e)
{
    throw new Exception(\"test exception\");
}

In the Global.as

Answer 1

I found the problem.

Server.Transfer("ErrUnknown.aspx")

was the cause.

While trying to view 'ErrUnknown.aspx' directly in the browser I realized I had an error in that page. After correcting it Server.Transfer works

Was is misleading though is that the event doesn't get fired while debugging the application?

Anyway.