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How to delete Excel chart legend in C#, VB.NET?

Platform: WinForms |
Control: XlsIO |
Published Date: March 14, 2018 |
Last Revised Date: August 30, 2021

This article explains how to delete chart legend using XlsIO.

 

What is the use of chart legend?

 

Most of the charts use legend to help readers understand the charted data. Whenever a chart is created in Excel, legend for the chart is automatically generated at the same time. A chart will not have a legend if it is manually removed, but can be retrieved.

Code snippet to delete chart legend

Delete chart legend using Delete() method.

//Delete chart legend
chart.Legend.Delete(); 

 

Applicable properties for chart legend

 

Below is the list of other common properties applicable for chart legend.

 

1.  Position

2.  IncludeInLayout

 

NOTE: Applying properties apart from the mentioned list might throw exception or the changes will not be reflected in the output document because those properties are not related to chart legend.

 

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 delete chart legend using XlsIO.

 

C#

 

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
                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";
 
                //Delete chart legend
                chart.Legend.Delete();
 
                //Set data labels
                IChartSerie serie1 = chart.Series[0];
                IChartSerie serie2 = chart.Series[1];
                IChartSerie serie3 = chart.Series[2];
 
                serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
                serie2.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
                serie3.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
 
                //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);
            }
        }
    }
}

VB

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
                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"
 
                'Delete chart legend
                chart.Legend.Delete()
 
                'Set data labels
                Dim serie1 As IChartSerie = chart.Series(0)
                Dim serie2 As IChartSerie = chart.Series(1)
                Dim serie3 As IChartSerie = chart.Series(2)
 
                serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
                serie2.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
                serie3.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
 
                '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

 

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