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

You can specify constraints as regular expressions or define custom constraints. Have a look at this blog post for more information:

http://weblogs.asp.net/stephenwalther/archive/2008/08/06/asp-net-mvc-tip-30-create-custom-route-constraints.aspx

You will still need to deal with the situation where id 43243 doesn't map to anything which could be dealt with as an IActionFilter or in your controller directly.