public class AreaSeries : Series 

var workbook = Workbook.Create( ChartSample.ChartSampleOutputDirectory + @"AddCharts.xlsx" );

// Gets the first Worksheet. A Workbook always contains at least 1 Worksheet.
var worksheet = workbook.Worksheets[ 0 ];

// Adds Values for Category.
worksheet.Cells[ "B4" ].Value = 2020;
worksheet.Cells[ "B5" ].Value = 2021;
worksheet.Cells[ "B6" ].Value = 2022;
worksheet.Cells[ "B7" ].Value = 2023;
worksheet.Cells[ "B8" ].Value = 2024;

// Adds an AreaChart with the generic Add method and set its SubType. The size of the Chart will be from cell E4 to L18.
var areaChart = worksheet.Charts.Add<AreaChart>( "E4", "L18" );
areaChart.SubType = AreaChartSubType.Standard;

// Sets the Chart's Title.
areaChart.Title.Text = "Profits";
areaChart.Title.TextOptions.Font.Bold = true;

// Sets the Category data(x values) for the AreaChart : Cells B4 to B8.
areaChart.CategoryData = CategoryData.FromCells( worksheet, "B4", "B8" );

// Adds AreaSeries to the AreaChart (y values) by specifying fixed values.
var areaSeries = areaChart.SeriesCollection.AddFromValues<AreaSeries>( 20, 28, 33, 12, 45 );

// Customizes the Fill an Stroke of the AreaSeries.
areaSeries.Fill.ThemeColor = new ThemeColor( ThemeColorType.Accent4 );
areaSeries.Stroke.Color = Xceed.Drawing.Color.Blue;
areaSeries.Stroke.Width = 2.5;

// Shows the DataPoint Labels and displayss a border around them.
areaSeries.DataPointLabels.ShowValue = true;
areaSeries.DataPointLabels.Border.Color = Xceed.Drawing.Color.Blue;

// Saves Workbook to disk.
workbook.Save();