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How to set invert if negative for Excel chart in C#, VB.NET?

2 mins read

This article explains how to set invert if negative in chart using .NET XlsIO Library.

What is the purpose of invert if negative?

When a chart series contains both positive and negative data points, the data bars are created with same color by default. To make the chart more clear and professional, the color of negative data bars can be inverted by enabling Invert if Negative under format data series.

This can be achieved in XlsIO, using InvertIfNegative property of ChartSerieImpl class.


Invert if negative in .NET XlsIO Library

    Invert if negative using XlsIO

Code snippet to set invert if negative

//Set invert if negative
(chart.Series[1] as ChartSerieImpl).InvertIfNegative = true;


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 invert if negative 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 invert if negative to second series
                (chart.Series[0] as ChartSerieImpl).InvertIfNegative = false;
                (chart.Series[1] as ChartSerieImpl).InvertIfNegative = true;
                (chart.Series[2] as ChartSerieImpl).InvertIfNegative = false;
                //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");


Imports Syncfusion.XlsIO
Imports System.Reflection
Imports System.IO
Imports Syncfusion.XlsIO.Implementation.Charts
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 invert if negative to second series
                CType(chart.Series(0), ChartSerieImpl).InvertIfNegative = False
                CType(chart.Series(1), ChartSerieImpl).InvertIfNegative = True
                CType(chart.Series(2), ChartSerieImpl).InvertIfNegative = False
                '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")
            End Using
        End Sub
    End Class
End Namespace


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