Compares this NullableString structure to a specified object and returns an indication of their relative values.
A signed number indicating the relative values of the instance and value.
|A negative integer||This instance is less than value.|
|Zero||This instance is equal to value.|
|A positive integer||
This instance is greater than value.
-or-value is a null reference (Nothing in Visual Basic) or Null.
Any instance of NullableString including the Empty string, regardless of its value, is considered greater than a null reference (Nothing in Visual Basic) and Null; and two Null compare equal to each other.