Custom Validation By Throwing Exceptions in ASP.NET MVC

Question

I am validating models in ASP.NET MVC, and throwing a custom Exception that contains a list of those errors. Is this a preferred, best practice, or should I return a strongly typed list of errors instead of using a throw new CustomException(List errors). I catch these errors regardless in my OnException in the BaseController to handle an ajax request or post back.

Daniel A. White · Accepted Answer · 2012-03-13 15:58:47Z

5

No. You should use ModelState to store your validation errors. Exceptions should only be used in exceptional cases.

ModelState has IsValid and will return false if there are any errors.

answered Mar 13, 2012 at 15:58

Daniel A. White

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3 Comments

Mike Flynn Over a year ago

stackoverflow.com/questions/4776396/…

Worthy7 Over a year ago

Can we do this even in an API controller?

Daniel A. White Over a year ago

@Worthy7 stackoverflow.com/questions/11686690/…

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