Catch multiple exceptions at once?

Question

It is discouraged to simply catch System.Exception. Instead, only the "known" exceptions should be caught.

Now, this sometimes leads to unnecce

Answer 1

In c# 6.0,Exception Filters is improvements for exception handling

try
{
    DoSomeHttpRequest();
}
catch (System.Web.HttpException e)
{
    switch (e.GetHttpCode())
    {
        case 400:
            WriteLine("Bad Request");
        case 500:
            WriteLine("Internal Server Error");
        default:
            WriteLine("Generic Error");
    }
}