Public Property X As Double

Dim instance As ChartItem
Dim value As Double
 
instance.X = value
 
value = instance.X

public double X {get; set;}

public read-write property X: Double; 

public function get,set X : double

public: __property double get_X();
public: __property void set_X( 
   double value
);

public:
property double X {
   double get();
   void set (    double value);
}