Question

I need to handle 404 exceptions differently than all other types of them. What is the best way to identify those 404 exceptions (distinguish them from other exceptions)?

The problem is that there is no a special exception class for 404 errors, I get regular System.Web.HttpException with Message = “File does not exist.”

Should I just use exception’s message for it or is there a better way?

Thank you.

Answer 1

You can try to cast the exception as an HttpException, and then use the GetHttpCode method to check whether it is a 404 or not.

For example:

Exception ex = Server.GetLastError();

HttpException httpEx = ex as HttpException;

if (httpEx != null && httpEx.GetHttpCode() == 404)
{
   //do what you want for 404 errors
}