Question

So I have string returnType which a developer can choose to = to JSON , XML or PRINT_R.
How to limit his choice and make VS 2008 or later suggest him what value (from that 3) string returnType can be? (.net 3.5)

Answer 1

public enum DataFormat{ JSON=0, XML=1, PRINTR=2 } 

public ReturnType SomeFunction( DataFormat format )
{
    if( DataFormat.JSON == format ) 
        return ....
    //etc
}