Why can't we declare var a = new List at class level?

Question

I know we cannot do this at class level but at method level we can always do this.

var myList=new List // or something else like this
<         


        

Answer 1

It's not as simple as implementing var in a method since you also have to take into acccount different modifiers and attributes like so:

[MyAttribute()] protected internal readonly var list = new List();

What I would really have liked is a type-inferenced const!

public const notFoundStatus = 404; // int