Pie 2D Chart — ReoGrid Docs

To add a 2D pie chart, first add the data source to the worksheet:

using unvell.ReoGrid;
// ...

var worksheet = this.grid.CurrentWorksheet;

worksheet["A2"] = new object[,] {
  { null, 2008, 2009, 2010, 2011, 2012 },
  { "City 1", 3, 2, 4, 2, 6 },
};

Define 2 ranges — a data source range and a title range — and add them to the highlight ranges collection:

var dataRange = worksheet.Ranges["B3:F3"];
var titleRange = worksheet.Ranges["B2:F2"];

worksheet.AddHighlightRange(dataRange);
worksheet.AddHighlightRange(titleRange);

Result:

240

Create the pie chart instance:

Chart.Chart c1 = new Chart.Pie2DChart
{
  Location = new Graphics.Point(220, 160),
  Size = new Graphics.Size(400, 260),

  Title = "2D Pie Chart Sample",

  DataSource = new WorksheetChartDataSource(worksheet, RangePosition.Empty, dataRange)
  {
    CategoryNameRange = titleRange,
  },
};

Add the chart instance to the worksheet; the chart will be displayed immediately:

worksheet.FloatingObjects.Add(c1);

The result:

241