Application_error function intermittently catch "File does not exist"

Question

I am using the Application_Error event for handling the exceptions and it catches almost all exceptions correctly. However in some pages it catches with exception "File does not exist" and I am not able to find from where it exactly occurs. When I comment the Application_Error code, surprisingly that web page works fine.

My main concern is how can trace back to the line of code from where it threw to Application_Error function.

Answer 1

Use HttpContext.Current.Request.Url.ToString() to look at the file path of the missing file.