How to compare nullable types?

Question

I have a few places where I need to compare 2 (nullable) values, to see if they\'re the same.

I think there should be something in the framework to support this, but can

Answer 1

Nullable.Equals<T>?

Answer 2

if (x.Equals(y)) 

Answer 3

(x?? 0).Equals(y)

will handle null as well as equals.

Answer 4

Just use ==, or .Equals().

Answer 5

I wanted to find how to compare two nullable int on C#, but I always get this link after search, so if someone needs to compare exactly two nullable int, then this can be helpful

a.GetValueOrDefault(int.MinValue).CompareTo(b.GetValueOrDefault(long.MinValue));

Answer 6

You can use the static Equals method on System.Object:

var equal = object.Equals(objA, objB);