A signed number indicating the relative values of this instance and obj.
Less than zero This instance is less than obj.
Zero This instance is equal to obj.
Greater than zero This instance is greater than obj.
-or-
obj is null.
Type Reason ArgumentException obj is not a sbyte and is not a null reference.
Any instance of sbyte, regardless of its value, is considered greater than null.
The obj parameter must be null or an instance of sbyte; otherwise, an exception is thrown.