How can i catch error in C# from RAISERROR of sql server?

Question

Here is my stored procedure code called "uspTest"

BEGIN TRY
SELECT 3 / 0;
END TRY

BEGIN CATCH
RAISERROR('D', 16, 3);
END CATCH

And Here is my c# code in visual studio

    public IHttpActionResult RegisterUser(RegisterModelView registerViewModel)
    {

        try
        {
            using (AusHerbEntities ctx = new AusHerbEntities())
            {
                ctx.uspTest();  
                Console.Write("i am in try block");
            }


        }

        catch (Exception e)
        {
            Console.Write(e.Message);

        }
        return Ok();
    }

When I run this code, the Catch block in C# code is not called, but I expect it to be called because the Stored Procedure raises error.

How can I get this code work?

I just want to do RAISERROR in catch block in Stored Procedure and catch the error in c# code.

Answer 1

To make SqlException thrown, the stored procedure must return with @@error set. In your case, END CATCH statement clears @@error . Inserting a RETURN statement immediately after the RAISERROR statement should make SqlException thrown.

BEGIN TRY
SELECT 3 / 0;
END TRY

BEGIN CATCH
RAISERROR('D', 16, 3);
RETURN;
END CATCH

Answer 2

Do you need the try-catch in SQL? If you're only using it to rollback the transaction, then you can simply set XACT_ABORT ON and dispense with the try-catch. The transaction will be rolled back, and any error will bubble through to the client. Here is a good article on the subject: https://www.simple-talk.com/sql/t-sql-programming/defensive-error-handling/

Answer 3

Can't see all your c# code but replace; catch (Exception e) with catch(SqlException e)