GetType of int64 returning System.Nullable

Question

I've got an object that has a type property. When the type is set to Int64, and I try and pull the type info later, I get System.Nullable.

Here's the type Info

{Name = "Nullable`1" FullName = "System.Nullable`1[[System.Int64, mscorlib, Version=2.0.0.0]]"}

How do I get to the System.Int64 type of this?

Answer 1

It sounds like you have a given type for which you want either that type or its underlying type if it is Nullable<T>. The best way to do this would be something like this:

Nullable.GetUnderlyingType(yourObject.Type) ?? yourObject.Type;

Since Nullabe.GetUnderlyingType returns null if the given Type is not Nullable<T> you can use the null coalescing operator (??) to default the value to the original type.

Answer 2

Type t = Nullable.GetUnderlyingType(nullableType);

See MSDN.