To add an area chart on worksheet, prepare a data source on worksheet firstly:
var worksheet = grid.CurrentWorksheet; worksheet["A2"] = new object[,] { { null, 2008, 2009, 2010, 2011, 2012 }, { "City 1", 3, 2, 4, 2, 6 }, { "City 2", 7, 5, 3, 6, 4 }, { "City 3", 13, 10, 9, 10, 9 }, { "Total", "=SUM(B3:B5)", "=SUM(C3:C5)", "=SUM(D3:D5)", "=SUM(E3:E5)", "=SUM(F3:F5)" }, };
Data source on worksheet:

Define data serials range, serial names range and category names range.
var dataRange = worksheet.Ranges["B3:F5"]; var serialNamesRange = worksheet.Ranges["A3:A5"]; var categoryNamesRange = worksheet.Ranges["B2:F2"]; worksheet.AddHighlightRange(categoryNamesRange); worksheet.AddHighlightRange(serialNamesRange); worksheet.AddHighlightRange(dataRange);
Code to create an area chart:
var chart = new Chart.AreaLineChart { Bounds = new Graphics.Rectangle(30, 150, 400, 240), Title = "Area Line Chart Sample", // Specify data source. // Data source is created from serial data and names for every serial data. DataSource = new Chart.WorksheetChartDataSource(worksheet, serialNamesRange, dataRange) { CategoryNameRange = categoryNamesRange, }, };
Add chart onto worksheet:
// add area chart onto worksheet, it will be displayed instantly worksheet.FloatingObjects.Add(chart);
Result:

Since the biggest area will cover others smaller area, access the data serial styles and change all colors to semi-transparent.
// Make all serial colors semi-transparent foreach (var style in chart.DataSerialStyles) { style.FillColor = new Graphics.SolidColor(100, style.FillColor.ToSolidColor()); }
Result:
