ASP.Net MVC - handling bad URL parameters

Question

What\'s the best way to handle a visitor constructing their own URL and replacing what we expect to be an ID with anything they like?

For example:

ASP.Net MVC -

Answer 1

Here is some useful infromation that might help. If you have a action method

public ActionResult Edit(int? id)
{}

then if someone types in

/Home/Edit/23

the parameter id will be 23. however if someone types in

/Home/Edit/Junk

then id will be null which is pretty cool. I thought it would throw a cast error or something. It means that if id is not a null value then it is a valid integer and can be passed to your services etc. for db interaction.

Hope this provides you with some info that I have found whilst testing.