Good day!

I have a problem with coloring of pie pieces in pie chart.

Example: I have some list of items.
{Sum = 10, Name = "Test1"}
{Sum = 30, Name = "Test2"}
{Sum = 50, Name = "Test3"}

If I use the predefined stylesheet, the color of a piece of pie will always be different.

NStyleSheet styleSheet = NStyleSheet.CreatePredefinedStyleSheet(PredefinedStyleSheet.BrightMultiColor);
styleSheet.Apply(control);

In code

Color color = ServiceColorRepository.Instance.GetFormsColor(record.Name);
NDataPoint point = new NDataPoint(record.Sum, record.Name, new NColorFillStyle(color));
pie.AddDataPoint(point);

I take a color based on the text of item. All is ok, but colors of arrows and borders of labels is always black.

How can I resolve this problem?

Hi Evgeny,

The stylesheet also applies settings for data label style - in order to replicate this you'll have to loop trough the data points in the pie and create an individual data label style for each data point. The following code shows how to do that:

   pie.DataLabelStyles.Clear();

   for (int i = 0; i < pie.Values.Count; i++)
   {
    NDataLabelStyle dls = (NDataLabelStyle)pie.DataLabelStyle.Clone();

    NStandardFrameStyle frame = new NStandardFrameStyle();
    Color fillColor = ((NFillStyle)pie.FillStyles[i]).GetPrimaryColor().ToColor();
    frame.InnerBorderColor = fillColor;

    dls.TextStyle.BackplaneStyle.StandardFrameStyle = frame;
    dls.ArrowStrokeStyle.Color = fillColor;

    pie.DataLabelStyles[i] = dls;
   }

Best Regards,
Nevron Support Team

Hello, thank your for your answer. It's works perfectly!