How to develop a ChartObject

OnRender(DrawingContext, ChartVisualArgs)

The draw method is called whenever the view renders itself. User must override this virtual method and draw the chartObject. The base method draws the handle of the chart object

Example

protected override void OnRender(DrawingContext drawingContext,ChartVisualArgs args)
{
    //your code here
    base.OnRender(drawingContext, args);
}

A Drawing object can be drawn manually or via SharpScript code (via an Indicator or Strategy). If you want to manually draw the drawing object, then you must override the mouse events. if you want the drawing objects drawn only via a sharpScript code then do not override the mouse events.

Please click here to know how to configure properties using Xaml template.

Reference