Interface IChartDataPoint

Represents data point in the chart.

Inherited Members

IParentApplication.Application

IParentApplication.Parent

Namespace: Syncfusion.XlsIO

Assembly: Syncfusion.XlsIO.Portable.dll

Syntax

public interface IChartDataPoint : IParentApplication

Properties

DataFormat

Gets or sets the data format.

Declaration

IChartSerieDataFormat DataFormat { get; }

Property Value

Type
IChartSerieDataFormat

Examples

The DataFormat property is used to set chart serie formats. Here for example, we access DataFormat and set Syncfusion.XlsIO.Excel2007ChartMarkerType.star to MarkerStyle.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C2"];

            //Set chart type
            chart.ChartType = ExcelChartType.Line;

            //Set serie format
            IChartSerieDataFormat format = chart.Series[0].SerieFormat;

            //Set marker style
            format.MarkerStyle = ExcelChartMarkerType.Star;

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
        }

DataLabels

Gets the IChartDataLabels object for the IChartDataPoint. Read-only.

Declaration

IChartDataLabels DataLabels { get; }

Property Value

Type
IChartDataLabels

Examples

The following code illustrates how to access the IChartDataLabels for a particular IChartDataPoint.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C2"];

            //Set serie
            IChartSerie serie = chart.Series[0];

            //Set data labels value visibility             
            serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
        }

Index

Gets index of the IChartDataPoint in the IChartDataPoints collection.

Declaration

int Index { get; }

Property Value

Type
System.Int32

Examples

The following code illustrates how to access the Index of a IChartDataPoint in the IChartDataPoints collection.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C2"];

            //Set serie
            IChartSerie serie = chart.Series[0];

            //Get index
            Console.WriteLine(serie.DataPoints[0].Index);

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }

IsDefault

True if the IChartDataPoint is a default one. otherwise False. Read-only.

Declaration

bool IsDefault { get; }

Property Value

Type
System.Boolean

Examples

The following code illustrates how to access the IsDefault property.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C2"];

            //Set serie format
            IChartDataPoints dataPoints = chart.Series[0].DataPoints;

            //Check default Datapoint
            Console.WriteLine(dataPoints.DefaultDataPoint.IsDefault);
            Console.WriteLine(dataPoints[0].IsDefault);

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }
//Output will be
//True
//False

IsDefaultmarkertype

True if the data point has default marker object. otherwise False.

Declaration

bool IsDefaultmarkertype { get; set; }

Property Value

Type
System.Boolean

Examples

The following code illustrates how to access the IsDefaultmarkertype property.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["D1"].Text = "Apr";
            sheet.Range["E1"].Text = "May";
            sheet.Range["F1"].Text = "Jun";
            sheet.Range["A2"].Value = "5";
            sheet.Range["B2"].Value = "21";
            sheet.Range["C2"].Value = "15";
            sheet.Range["D2"].Value = "12";
            sheet.Range["E2"].Value = "28";
            sheet.Range["F2"].Value = "9";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:F2"];

            //Set chart type
            chart.ChartType = ExcelChartType.Line;

            //Set serie data format
            IChartSerieDataFormat format = chart.Series[0].DataPoints.DefaultDataPoint.DataFormat;

            //Set marker style
            format.MarkerStyle = ExcelChartMarkerType.Circle;

            //Check default marker
            Console.Write(chart.Series[0].DataPoints.DefaultDataPoint.IsDefaultmarkertype);

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
            Console.ReadKey();
        }
//Output will be
//True

SetAsTotal

True if the data point is considered as Subtotals or Totals. otherwise False.

Declaration

bool SetAsTotal { get; set; }

Property Value

Type
System.Boolean

Remarks

Applies only to Waterfall charts.

Examples

By default in WaterFall chart data is plotted as floating columns. If we mark a particular column as total or subtotal by setting SetAsTotal property then that particular column starts from zero in horizontal axis and it won't float.

        using (ExcelEngine excelEngine = new ExcelEngine())
        {
            //Create worksheet
            IApplication application = excelEngine.Excel;
            application.DefaultVersion = ExcelVersion.Excel2013;
            IWorkbook workbook = application.Workbooks.Create(1);
            IWorksheet sheet = workbook.Worksheets[0];

            //Add data
            sheet.Range["A1"].Text = "Jan";
            sheet.Range["B1"].Text = "Feb";
            sheet.Range["C1"].Text = "Mar";
            sheet.Range["A2"].Value = "10";
            sheet.Range["B2"].Value = "20";
            sheet.Range["C2"].Value = "30";

            //Create chart
            IChart chart = sheet.Charts.Add();

            //Set range
            chart.DataRange = sheet.Range["A1:C2"];

            //Set chart type
            chart.ChartType = ExcelChartType.WaterFall;

            //Set serie format
            IChartSerieDataFormat format = chart.Series[0].SerieFormat;

            //Set SetAsTotal
            chart.Series[0].DataPoints[2].SetAsTotal = true;

            //Save and Dispose
            workbook.SaveAs("Chart.xlsx");
            workbook.Close();
        }