Determine if reflected property can be assigned null

Question

I wish to automagically discover some information on a provided class to do something akin to form entry. Specifically I am using reflection to return a PropertyInfo value f

Answer 1

You need to handle null references and Nullable, so (in turn):

bool canBeNull = !type.IsValueType || (Nullable.GetUnderlyingType(type) != null);

Note that IsByRef is something different, that allows you to choose between int and ref int / out int.