)
We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. (Last updated on: June 24, 2019).
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

Change the color of single data point in Excel chart in C#, VB.NET

Platform: WinForms |
Control: XlsIO |
Published Date: April 30, 2011 |
Last Revised Date: January 22, 2020

Syncfusion Excel (XlsIO) library is a .NET Excel library used to create, read, and edit Excel documents. Also, converts Excel documents to PDF files. Using this library, you can change the color of chart data points.

This sample explains how to change the color of single data point in Excel chart.

Steps to change the color of a data point in Excel chart, programmatically:

  1. Create a new C# console application project.

Create a console applicaton

Create a new C# console application project

  1. Install the Syncfusion.XlsIO.WinForms NuGet package as reference to your .NET Framework application from NuGet.org.

Install XlsIO project reference

Install NuGet package to the project

  1. Add the Excel file with data for creating a chart into the project and make the file an Embedded Resource, by following the below steps.
  1. In Visual Studio, click the Project menu and select Add Existing Item. Find and select the Excel file you want to add to your project.
  2. In the Solution Explorer window, right-click on the Excel file you just added to your project and select Properties from the popup menu. The Properties tool window appears.
  3. In the Properties window, change the Build Action property to Embedded Resource.
  4. Build the project. All the Excel files will be compiled into your project’s assembly.
  1. A data point in Excel chart is represented by IChartDataPoint and the ForeColor property of IFill interface is used to fill the color in data point.

C#

//Change the color of a data point
chart.Series[0].DataPoints[4].DataFormat.Fill.ForeColor = Color.YellowGreen;

 

VB.NET

'Change the color of a data point
chart.Series(0).DataPoints(4).DataFormat.Fill.ForeColor = Color.YellowGreen

 

  1. Include the following namespaces in Program.cs file.

C#

using Syncfusion.XlsIO;
using System.Drawing;
using System.IO;
using System.Reflection;

 

VB.NET

Imports System.Drawing
Imports System.IO
Imports System.Reflection
Imports Syncfusion.XlsIO

 

  1. Include the following code snippet in main method of Program.cs file to change the color of single data point in Excel chart.

C#

using (ExcelEngine excelEngine = new ExcelEngine())
{
    //Instantiate the Excel application object
    IApplication application = excelEngine.Excel;
 
    //Load an existing Excel file into IWorkbook
    Assembly assembly = typeof(Program).GetTypeInfo().Assembly;
    Stream fileStream = assembly.GetManifestResourceStream("DataPointColor.Sample.xlsx");
    IWorkbook workbook = application.Workbooks.Open(fileStream, ExcelOpenType.Automatic);
 
    //Get the first worksheet in workbook into IWorksheet
    IWorksheet worksheet = workbook.Worksheets[0];
 
    //Add a chart in the worksheet
    IChartShape chart = worksheet.Charts.Add();
 
    //Set the data range and title to the chart
    chart.DataRange = worksheet.Range["A2:C12"];
    chart.ChartTitle = "Texas Books Unit Sales";
 
    //Set the chart series in column for assigned data region
    chart.IsSeriesInRows = false;
 
    //Set the position for chart in the worksheet
    chart.TopRow = 2;
    chart.LeftColumn = 5;
    chart.BottomRow = 16;
    chart.RightColumn = 13;
 
    //Change the color of a data point
    chart.Series[0].DataPoints[4].DataFormat.Fill.ForeColor = Color.YellowGreen;
 
    //Save the Excel document
    workbook.SaveAs("Output.xlsx");
}

 

VB.NET

Using excelEngine As ExcelEngine = New ExcelEngine()
    'Instantiate the Excel application object
    Dim application As IApplication = excelEngine.Excel
 
    'Load an existing Excel file into IWorkbook
    Dim assembly As Assembly = GetType(Module1).GetTypeInfo().Assembly
    Dim fileStream As Stream = assembly.GetManifestResourceStream("VBSample.Sample.xlsx")
    Dim workbook As IWorkbook = application.Workbooks.Open(fileStream, ExcelOpenType.Automatic)
 
    'Get the first worksheet in workbook into IWorksheet
    Dim worksheet As IWorksheet = workbook.Worksheets(0)
 
    'Add a chart in the worksheet
    Dim chart As IChartShape = worksheet.Charts.Add()
 
    'Set the data range and title to the chart
    chart.DataRange = worksheet.Range("A2:C12")
    chart.ChartTitle = "Texas Books Unit Sales"
 
    'Set the chart series in column for assigned data region
    chart.IsSeriesInRows = False
 
    'Set the position for chart in the worksheet
    chart.TopRow = 2
    chart.LeftColumn = 5
    chart.BottomRow = 16
    chart.RightColumn = 13
 
    'Change the color of a data point
    chart.Series(0).DataPoints(4).DataFormat.Fill.ForeColor = Color.YellowGreen
 
    'Save the Excel document
    workbook.SaveAs("Output.xlsx")
End Using

 

A complete working sample to change the color of single data point in Excel chart can be downloaded from DataPointColor.zip.

By executing the program, you will get the output Excel document as follows.

Change the color of single data point

Output Excel document

Take a moment to peruse the documentation where you will find other options like creating and removing a chart, customizing chart and chart elements, sparkline, excel 2016 charts and creation of all supported chart types.

Click here to explore the rich set of Syncfusion Excel (XlsIO) library features.

An online sample link to create a chart worksheet.

See Also:

Set the axis interval in terms of days

Set the data label position for chart series

Change the color of gridlines in Excel chart

Copy and insert the chart in same worksheet

Position and re-size the plot area of chart

Note:

Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, include a license key in your projects. Refer the link to learn about generating and registering Syncfusion license key in your application to use the components without trial message.

 

2X faster development

The ultimate WinForms UI toolkit to boost your development speed.
ADD COMMENT
You must log in to leave a comment

Please sign in to access our KB

This page will automatically be redirected to the sign-in page in 10 seconds.

Up arrow icon

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon

Live Chat Icon For mobile
Live Chat Icon