How to add chart labels to scatter points?

22 Dec 20226 minutes to read

The following code illustrates adding chart labels to the scatter points of the chart.

using (ExcelEngine excelEngine = new ExcelEngine())
{
  IApplication application = excelEngine.Excel;
  application.DefaultVersion = ExcelVersion.Excel2013;
  IWorkbook workbook = application.Workbooks.Open("Sample.xlsx", ExcelOpenType.Automatic);
  IWorksheet worksheet = workbook.Worksheets[0];

  //Get the chart from the charts collection
  IChart chart = worksheet.Charts[0];

  //Get the first series from the Series collection
  IChartSerie serieOne = chart.Series[0];

  //Set the Series name to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsSeriesName = true;

  //Set the Value to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsValue = true;

  workbook.SaveAs("ChartLabels.xlsx");
}
Using excelEngine As ExcelEngine = New ExcelEngine()
  Dim application As IApplication = excelEngine.Excel
  application.DefaultVersion = ExcelVersion.Excel2013
  Dim workbook As IWorkbook = application.Workbooks.Open("Sample.xlsx", ExcelOpenType.Automatic)
  Dim worksheet As IWorksheet = workbook.Worksheets(0)

  'Get the chart from the charts collection
  Dim chart As IChart = worksheet.Charts(0)

  'Get the first series from the Series collection
  Dim serieOne As IChartSerie = chart.Series(0)

  'Set the Series name to the Data Labels through Data Points
  serieOne.DataPoints(0).DataLabels.IsSeriesName = True

  'Set the Value to the Data Labels through Data Points
  serieOne.DataPoints(0).DataLabels.IsValue = True

  workbook.SaveAs("ChartLabels.xlsx")
End Using
using (ExcelEngine excelEngine = new ExcelEngine())
{
  IApplication application = excelEngine.Excel;

  //Instantiates the File Picker
  FileOpenPicker openPicker = new FileOpenPicker();
  openPicker.SuggestedStartLocation = PickerLocationId.Desktop;
  openPicker.FileTypeFilter.Add(".xlsx");
  openPicker.FileTypeFilter.Add(".xls");
  StorageFile file = await openPicker.PickSingleFileAsync();

  //Opens the workbook
  IWorkbook workbook = await application.Workbooks.OpenAsync(file, ExcelOpenType.Automatic);                
  IWorksheet worksheet = workbook.Worksheets[0];

  //Get the chart from the charts collection
  IChart chart = worksheet.Charts[0];

  //Get the first series from the Series collection
  IChartSerie serieOne = chart.Series[0];

  //Set the Series name to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsSeriesName = true;

  //Set the Value to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsValue = true;

  //Initializes FileSavePicker
  FileSavePicker savePicker = new FileSavePicker();
  savePicker.SuggestedStartLocation = PickerLocationId.Desktop;
  savePicker.SuggestedFileName = "ChartLabels";
  savePicker.FileTypeChoices.Add("Excel Files", new List<string>() { ".xlsx" });

  //Creates a storage file from FileSavePicker
  StorageFile storageFile = await savePicker.PickSaveFileAsync();

  //Saves changes to the specified storage file
  await workbook.SaveAsAsync(storageFile);
}
using (ExcelEngine excelEngine = new ExcelEngine())
{
  IApplication application = excelEngine.Excel;
  FileStream inputStream = new FileStream("Sample.xlsx", FileMode.Open, FileAccess.Read);
  IWorkbook workbook = application.Workbooks.Open(inputStream, ExcelOpenType.Automatic);
  IWorksheet worksheet = workbook.Worksheets[0];

  //Get the chart from the charts collection
  IChart chart = worksheet.Charts[0];

  //Get the first series from the Series collection
  IChartSerie serieOne = chart.Series[0];

  //Set the Series name to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsSeriesName = true;

  //Set the Value to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsValue = true;

  FileStream stream = new FileStream("ChartLabels.xlsx", FileMode.OpenOrCreate, FileAccess.ReadWrite);
  workbook.SaveAs(stream);
  workbook.Close();
  excelEngine.Dispose();
}
using (ExcelEngine excelEngine = new ExcelEngine())
{
  IApplication application = excelEngine.Excel;
  Assembly assembly = typeof(App).GetTypeInfo().Assembly;
  Stream fileStream = assembly.GetManifestResourceStream("App.Sample.xlsx");
  IWorkbook workbook = application.Workbooks.Open(fileStream);
  IWorksheet worksheet = workbook.Worksheets[0];

  //Get the chart from the charts collection
  IChart chart = worksheet.Charts[0];

  //Get the first series from the Series collection
  IChartSerie serieOne = chart.Series[0];

  //Set the Series name to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsSeriesName = true;

  //Set the Value to the Data Labels through Data Points
  serieOne.DataPoints[0].DataLabels.IsValue = true;

  MemoryStream stream = new MemoryStream();
  workbook.SaveAs(stream);

  stream.Position = 0;

  //Save the stream as a file in the device and invoke it for viewing
  Xamarin.Forms.DependencyService.Get<ISave>().SaveAndView("ChartLabels.xlsx", "application/msexcel", stream);
}

See Also