Hi Robert,
Thanks for your interest in Syncfusion products.
It is possible to differentiate the ChartInterior border with different color using the ChartArea.RenderBounds rectangle.Please find the sample code below.
Sample code:this.chartControl1.PrimaryXAxis.DrawGrid = false;
this.chartControl1.PrimaryYAxis.DrawGrid = false;
this.chartControl1.ChartAreaPaint += new PaintEventHandler(chartControl1_ChartAreaPaint);
...
...
void chartControl1_ChartAreaPaint(object sender, PaintEventArgs e)
{
Rectangle chartInteriorBorder = this.chartControl1.ChartArea.RenderBounds;
Rectangle chartAreaBorder = this.chartControl1.ChartArea.Bounds;
using (Pen p = new Pen(Color.SteelBlue))
{
p.Width=3;
e.Graphics.DrawRectangle(p, chartInteriorBorder);
p.Color = Color.Maroon;
e.Graphics.DrawRectangle(p, chartAreaBorder);
}
}
Also I have attached the sample that illustrates the same in this link below.
http://websamples.syncfusion.com/samples/Chart.Windows/F75745/Main.htmKindly let us know if this meets your requirements. Thanks for your patience.
Regards,
Manohari.R