Question

If I have a Type, is there some easy way to tell that it represents a nullable value type using Reflection? Ideally something a little cleaner (and more correct) than:

static bool IsNullable(Type type)
{
    return type.IsValueType && type.Name.StartsWith("Nullable");
}

Answer 1

type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>)

You might also find Nullable.GetUnderlyingType(Type nullableType) useful, to easily get the T of the typeof(Nullable<T>) you pass in.