How to ignore exception with HandleErrorAttribute OnException event

Question

Hi, I want to manage all of my exceptions in some HandleErrorAttribute class. but for some specific exceptions types i want to ignore or cancel the exceptions handeling and just continue with the parent request..

thanks

Answer 1

For those exceptions which are of the specific type or types you wish to ignore, you don´t set the ExceptionHandled flag in true.

By the way, you have to create a custom ErrorHandler. It could be something like this (pseudo code):

public class CustomHandleErrorAttribute : FilterAttribute, IExceptionFilter
{
    public void OnException(ExceptionContext filterContext)
    {
        //filterContext.ExceptionHandled = exception_is_of_type_that_must_be_handled;
        //Other code, logging, etc            
    } 
}

Answer 2

I think the only way to ignore a specific exception and continue with the action method would be to catch the specific exception in your controller and ignore it there.

E.g.

[HandleErrorAttribute]
public ActionResult YourActionMethod()
{
    try
    {
        //Do some stuff
    }
    catch (SpecificExceptionToIgnore ex)
    {
        //Do something here with the exception
        //E.g. Simply ignore it, Log it, set some modelstate or tempdata
    }

    //Carry on.
    //All other exceptions will be thrown as normal and
    //will be handled by your 'HandleErrorAttribute' attribute.

    return View();
}

HTHs,
Charles