Handling exception in asp.net core for certain exception type?

Question

I have asp.net core application. To handle exception i am using one of the extension method from Microsoft.AspNetCore.Diagnostics

 app.UseExceptionHandler("/Home/Error");

so when error occurs user gets redirected to error page.

I wanted to know how do i redirect user to certain page based on exception type? something like

if( exception is NotAuthorizedException)
{ 
    // redirect to "Home/NotAuthrozied"
}
else
{
  // redirect to "Home/Error"
}

How do i handle this inside app.UseExceptionHandler() method?
I have already looked here but couldnt find anything. I am also trying to avoid creating custom middleware to handle exception.

Curious, what are you using for authentication/authorization in your app? If you use Identity, that will handle this for you when you use the Authorize attribute. — R. Richards
– R. Richards, Commented Apr 8, 2017 at 0:41
As you may see UseExceptionHandler considers only about ExceptionHandlingPath (you can check it in its source code). So just use custom middleware, it's pretty easy. — Ilya Chumakov
– Ilya Chumakov, Commented Apr 9, 2017 at 16:31
@R.Richards we have external authentication provider using OpenID connect. so when user authenticated by this external provider, the application also checks if the user exists the application database, if not then throws exception.. in such case I need to redirect user to not authorized page — LP13
– LP13, Commented Apr 10, 2017 at 15:15

Community · Accepted Answer · 2017-05-23 12:02:11Z

1

There was another discussion for the exception handling using the middleware approach. The one you are seeing is redirect/route approach however you have other approach such as filter/attribute/global exception

edited May 23, 2017 at 12:02

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answered Apr 8, 2017 at 12:18

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