Cannot use local variable before it is declared ASP.NET MVC Beta

Question

Hi,

I have some code like this:

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Save([Bind(Prefix="")]Person person)
{
    String s = person.property;
    /* ... */
}

But it throws the error: "Cannot use local variable 'person' before it is declared".

What simple thing am I missing?

Answer 1

Okay, this is just some really bizarre error - if the variable is named a particular name it does not work, for any other name it does work...

Answer 2

It is most likely that you are receiving this error because the same variable is being declared later in the same code block.

According to compiler rules, a variable reference will refer to default by a matching declaration withing the same block EVEN IF THE SAME DECLARATION EXISTS OUTSIDE OF THE BLOCK IN IN LOGICAL SCOPE FLOW.

So in short, check to see if the variable isnt being declared later on(a couple of lines down) in the same application block.