How to set error bar for Excel chart in C#, VB.NET?

1 min read

This article explains how to set Error Bar in chart using XlsIO.

What are Error Bars?

Error bars express potential error amounts that are graphically relative to each data point or data marker in a data series. This can be achieved in XlsIO, using HasErrorBarsX and HasErrorBarsY properties in chart series.

Code snippet to set Error Bar

//Set error bar
chart.Series[0].HasErrorBarsY = true;
chart.Series[0].ErrorBarsY.Type = ExcelErrorBarType.Percentage;

Notes:

1. Horizontal error bars (ErrorBarsX) are applicable for 2D bar charts.

2. Vertical error bars (ErrorBarsY) are applicable for 2D line charts, 2D column charts, 2D area charts and stock charts.

3. Scatter charts and bubble charts (both 2D and 3D) do support horizontal error bars and vertical error bars.

4. Error bar type can be selected using Type property.

Download Complete Sample

Download input file with data

To know more about creating charts with various settings using XlsIO, please refer the documentation.

The following C#/ VB.NET complete code snippet shows how to set error bar in chart using XlsIO.

using Syncfusion.XlsIO;
using System.Reflection;
using System.IO;
 
namespace ChartSample
{
    class Program
    {
        static void Main(string[] args)
        {
            using (ExcelEngine excelEngine = new ExcelEngine())
            {
                IApplication application = excelEngine.Excel;
                application.DefaultVersion = ExcelVersion.Excel2016;
 
                //Open existing workbook with data entered
                Assembly assembly = typeof(Program).GetTypeInfo().Assembly;
                Stream fileStream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx");
                IWorkbook workbook = application.Workbooks.Open(fileStream);
                IWorksheet worksheet = workbook.Worksheets[0];
 
                //Initialize chart and assign data
                IChartShape chart = worksheet.Charts.Add();
                chart.ChartType = ExcelChartType.Column_Clustered;
 
                //Assign data
                chart.DataRange = worksheet["A1:D6"];
                chart.IsSeriesInRows = false;
 
                //Apply chart elements
                //Set chart title
                chart.ChartTitle = "Clustered Column Chart";
 
                //Set error bars
                chart.Series[0].HasErrorBarsY = true;
                chart.Series[1].HasErrorBarsY = true;
                chart.Series[2].HasErrorBarsY = true;
                chart.Series[0].ErrorBarsY.Type = ExcelErrorBarType.Percentage;
                chart.Series[1].ErrorBarsY.Type = ExcelErrorBarType.Percentage;
                chart.Series[2].ErrorBarsY.Type = ExcelErrorBarType.Percentage;
             
                //Positioning the chart in the worksheet
                chart.TopRow = 8;
                chart.LeftColumn = 1;
                chart.BottomRow = 23;
                chart.RightColumn = 8;
 
                //Saving the workbook
                Stream stream = File.Create("Output.xlsx");
                workbook.SaveAs(stream);
            }
        }
    }
}

Imports Syncfusion.XlsIO
Imports System.Reflection
Imports System.IO
 
Namespace ChartSample
 
    Class Program
 
        Public Shared Sub Main(ByVal args() As String)
            Using excelEngine As ExcelEngine = New ExcelEngine
                Dim application As IApplication = excelEngine.Excel
                application.DefaultVersion = ExcelVersion.Excel2016
                
                'Open existing workbook with data entered
                Dim assembly As Assembly = GetType(Program).GetTypeInfo.Assembly
                Dim fileStream As Stream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx")
                Dim workbook As IWorkbook = application.Workbooks.Open(fileStream)
                Dim worksheet As IWorksheet = workbook.Worksheets(0)
 
                'Initialize chart and assign data
                Dim chart As IChartShape = worksheet.Charts.Add
                chart.ChartType = ExcelChartType.Column_Clustered
 
                'Assign data
                chart.DataRange = worksheet("A1:D6")
                chart.IsSeriesInRows = False
 
                'Apply chart elements
                'Set chart title
                chart.ChartTitle = "Clustered Column Chart"
 
                'Set error bars
                chart.Series(0).HasErrorBarsY = True
                chart.Series(1).HasErrorBarsY = True
                chart.Series(2).HasErrorBarsY = True
                chart.Series(0).ErrorBarsY.Type = ExcelErrorBarType.Percentage
                chart.Series(1).ErrorBarsY.Type = ExcelErrorBarType.Percentage
                chart.Series(2).ErrorBarsY.Type = ExcelErrorBarType.Percentage
 
                'Positioning the chart in the worksheet
                chart.TopRow = 8
                chart.LeftColumn = 1
                chart.BottomRow = 23
                chart.RightColumn = 8
 
                'Saving the workbook
                Dim stream As Stream = File.Create("Output.xlsx")
                workbook.SaveAs(stream)            
            End Using
        End Sub
    End Class
End Namespace

$C:\Users\kondurukeerthi.kondu\AppData\Local\Microsoft\Windows\INetCache\Content.Word\Capture.png$

Error bar set using XlsIO

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How to set error bar for Excel chart in C#, VB.NET?

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