MVC :: Custom Exceptions - Overriding OnException?
Jun 18, 2010
I've created a custom exception that inherits from Exception. I initially tried using the HandleError attribute with it, but too many things to list went wrong with that. I read about overriding OnException in a base Controller class, and decided to give that a try. This is the code:
[Code]....
This works, but I have a few questions. First, does an error page have to derrive from 'System.Web.Mvc.HandleErrorInfo'? I added a few new properties to my exception, and thought I'd be able to send it as a model to the error View where I could display those properties as usual when populating a View, but when I changed the type that the error View derrives from I get the yellow screen of death.
Also, I read that the above code would cause MVC to look first in the Views folder that correspondss to the controller that threw the exception. This was not the case. I placed the Error.aspx file in that Views folder and was treated to the YSOD again. I simply cut and pasted the file into the base shared folder and it worked. I am using Areas, and wonder if that could be a bug.
The last question I have is about the exception object as it's thrown. After throwing an exception, in the OnException method I thought I'd be able to see and manipulate the exception, but if that is possible I don't know how. What I would really like to do is to treat the exception object like any other object. I want to intercept its handling in the OnException method and send it to a View.
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[Code]....
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