What's the strangest corner case you've seen in C# or .NET? [closed]

Answer 1

PropertyInfo.SetValue() can assign ints to enums, ints to nullable ints, enums to nullable enums, but not ints to nullable enums.

enumProperty.SetValue(obj, 1, null); //works
nullableIntProperty.SetValue(obj, 1, null); //works
nullableEnumProperty.SetValue(obj, MyEnum.Foo, null); //works
nullableEnumProperty.SetValue(obj, 1, null); // throws an exception !!!

Full description here