Exception Handling in ASP.NET Web API giving me errors after HttpRequestException

Question

So here is one of my actions.

public Customers GetCustomer(int id)
{
    var customer = _context.Customers.SingleOrDefault(c => c.Id == id);

    if (customer == null)
        throw new HttpRequestException(HttpStatusCode.NotFound);
    return customer;
}

This part of the code

throw new HttpRequestException(HttpStatusCode.NotFound);

throws the following error

cannot convert from 'System.Net.HttpStatusCode' to 'String'

Also, in one of my other methods, same error is being thrown on the following.

throw new HttpRequestException(HttpStatusCode.BadRequest);

This is an Api controller and I am not sure why these errors are being thrown. I looked up the syntax on the microsft website and it seems to be correct. It can be seen here: https://learn.microsoft.com/en-us/aspnet/web-api/overview/error-handling/exception-handling

Christos · Accepted Answer · 2022-06-19 04:41:54Z

1

I think that you are looking for is HttpResponseException and not HttpRequestException. If so, you can do it as below:

throw new HttpResponseException(HttpStatusCode.NotFound);

This works, because as you can see in documentation, there is a constructor for that class that takes one parameter of type HttpStatusCode. On the other hand, as you can see here, this is not true for HttpRequestException.

answered Jun 19, 2022 at 4:41

Christos

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