Calling Page properties from a class

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I have this error handler class, and I was wanted to be able to change page the user is looking at from the class rather than having to return to the class to change the page.

As an example: the form would call a method in another class, if an error occurred in the method of that class it would call the error handler that would log and email the error and I would like it to redirect the user to a generic error page. This way I dont have to keeping throwing back so the original caller would have to deal with the error, the error would be dealt with and would have already informed the user.

I hope I'm making sense.

Anybody have any ideas.