I\'m getting an error when I attempt to use the following static function.
Error:
Expected class, delegate, enum, interface, or struct
There is a capital S String in C#/.Net - System.String. But that is not your problem. @Femaref got it right - this error is indicating that your method is not part of a class.
C# does not support standalone functions, like C++ does. All methods have to be declared within the body of a class, interface or struct definition.