Message when net core exception occurs

Question

Message when net core exception occurs

Asked 5 years, 1 month ago

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-1

I have 1 to 1 relationship between company and user

but when the user has already registered 1 company and try to register another I want to show a message other than

how can I do?

Hello Thais, do not post pictures of your problem, give preference to put in question, formatted, the point of code where the problem occurs.

– Pedro Paulo

2019/08/01 at 09:05
Instead of letting the error happen, it might be a good thing to validate if the user no longer has a registered company.

– Barbetta

2019/08/13 at 12:45

1 answer

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by iamdlm • **627** points · Answer 1 · 2019-08-13T11:59:38+00:00

You have two chances to catch these mistakes (both can be used at the same time):

Try/Catch

try
{
    // Code
}
catch (Exception ex)
{
   // Handle ex
}

Or you use the native middleware for handling exceptions of the . NET Core, which can be configured using the method UseExceptionHandler. The Boilerplate of this code is already generated when we create a project so you can take a look at this code and adapt to your needs.