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Change Excel sheet grid line color in C#, VB.NET

Platform: WinForms |
Control: XlsIO

Syncfusion Excel (XlsIO) library is a .NET Excel library used to create, read, and edit Excel documents. Excel helps in daily life to manage records, analyze data, calculations, analytical tool for business and visualization.

Gridlines in Excel are gray lines around the cells in the worksheet by default. And gridlines used to differentiate the cells and to read data easily. Using Syncfusion Excel (XlsIO) library, you can change gridline color of Excel sheet.

Steps to change gridline color of Excel sheet programmatically:

Step 1: Create a new C# console application project.

Create empty Console application in Visual Studio

Create a new C# console application

Step 2: Install the Syncfusion.XlsIO.WinForms NuGet package as reference to your .NET Framework applications from NuGet.org.

Add XlsIO reference to the project

Install NuGet package

Step 3: Include the following namespace in the Program.cs file.


using Syncfusion.XlsIO;



Imports Syncfusion.XlsIO


Step 4: Use the following code snippet to change the gridline color of Excel sheet.


//Initialize ExcelEngine.
using (ExcelEngine excelEngine = new ExcelEngine())
    //Initialize Application.
    IApplication application = excelEngine.Excel;
    //Set default version for application.
    application.DefaultVersion = ExcelVersion.Excel2013;
    //Create a new workbook.
    IWorkbook workbook = application.Workbooks.Create(1);
    //Accessing first worksheet in the workbook.
    IWorksheet worksheet = workbook.Worksheets[0];
    //Adding text to a cell
    worksheet.Range["A1:D5"].Text = "Hello World";
    //Set the Gridline color
    worksheet.GridLineColor = ExcelKnownColors.Red;
    //Save the workbook to csv format.



'Initialize ExcelEngine.
Using excelEngine As ExcelEngine = New ExcelEngine
    'Initialize Application.
    Dim application As IApplication = excelEngine.Excel
    'Set default version for application.
    application.DefaultVersion = ExcelVersion.Excel2013
    'Create a new workbook.
    Dim workbook As IWorkbook = application.Workbooks.Create(1)
    'Accessing first worksheet in the workbook.
    Dim worksheet As IWorksheet = workbook.Worksheets(0)
    'Adding text to a cell
    worksheet.Range("A1:D5").Text = "Hello World"
    ’Set the Gridline color
    worksheet.GridLineColor = ExcelKnownColors.Red
    'Save the workbook to csv format.
    worksheet.SaveAs("Sample.csv", ",")
End Using


A complete working example to change the gridline color of Excel sheet can be downloaded from ChangeGridLineColor.zip.

By executing the sample program, you will get the Excel file as below.

Output of the sample program

Output Excel document

Gridlines have a faint grey color by default. GridLineColor property used to change the gridline color of Excel sheet.

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

An online sample link to change the gridline color of worksheet.


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 trail message.


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