'宣言 Protected Overridable Function GetSeriesValuePositionHelper( _ ByVal world As Point, _ ByVal useInterpolation As Boolean, _ ByVal skipUnknowns As Boolean, _ ByVal offset As Double, _ ByVal valueAxis As Axis, _ ByVal indexAxis As Axis, _ ByVal getSeriesValue As Func(Of Point,Boolean,Boolean,Double), _ ByVal getPrevious As Func(Of Point,Boolean,Integer), _ ByVal getNext As Func(Of Point,Boolean,Integer) _ ) As Point
protected virtual Point GetSeriesValuePositionHelper( Point world, bool useInterpolation, bool skipUnknowns, double offset, Axis valueAxis, Axis indexAxis, Func<Point,bool,bool,double> getSeriesValue, Func<Point,bool,int> getPrevious, Func<Point,bool,int> getNext )