Identify if a Type is *either* of int or Nullable

Question

Reflection code.

I can check if myTypeObject == typeof(decimal) || myTypeObject == typeof(decimal?)

Is there any way to do that without repeating decimal?

I'm guessing something along the lines of:

myRealTypeObject = myTypeObject.IsNullable() ? myTypeObject.GetTypeInsideNullability() : myTypeObject;
myRealTypeObject == typeof(decimal)

Answer 1

You can use Nullable.GetUnderlyingType which returns null if the input type is not nullable:

var myRealTypeObject = Nullable.GetUnderlyingType(myTypeObject) ?? myTypeObject;

if instead you have have some object you want to check you can just use is (or as):

bool isDecimal = boxedDecimal is decimal?;