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991689-How to apply border styles for merged cells #1889

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991689-Merged-Cellstyle
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991689-Merged-Cellstyle
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3 changes: 3 additions & 0 deletions Document-Processing-toc.html
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<li>
<a href="/document-processing/excel/excel-library/net/faqs/how-to-extract-embedded-OLE-files-from-an-Excel-workbook-as-streams">How to extract embedded OLE files from an Excel workbook as streams?</a>
</li>
<li>
<a href="/document-processing/excel/excel-library/net/faqs/how-to-apply-border-styles-for-merged-cells">How to apply border styles for merged cells?</a>
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</ul>
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101 changes: 101 additions & 0 deletions ...ing/Excel/Excel-Library/NET/faqs/how-to-apply-border-styles-for-merged-cells.md
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---
title: Apply border styles to merged cells in Excel | Syncfusion
description: Learn how to apply border styles to merged cells in Excel using the Syncfusion .NET Excel (XlsIO) library.
platform: document-processing
control: XlsIO
documentation: UG
---

# How to apply border styles for merged cells?

As per the Microsoft Excel UI Behavior, while applying the styles to the single cell in the merged region, then it will apply only to that single cell. So please use the **MergeArea** property to apply the styles to the entire merged region.

The following examples show how to apply border styles for merged cells in C# (cross-platform and Windows-specific) and VB.NET.

{% tabs %}
{% highlight c# tabtitle="C# [Cross-platform]" playgroundButtonLink="https://raw.githubusercontent.com/SyncfusionExamples/XlsIO-Examples/master/FAQ/Border%20styles%20for%20merged%20cells/.NET/Borderstylesformergedcells/Borderstylesformergedcells/Program.cs,180" %}
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Xlsx;
IWorkbook workbook = application.Workbooks.Open("../../../Data/Input.xlsx");
IWorksheet worksheet = workbook.Worksheets[0];

# region Creating a new style
IStyle style = workbook.Styles.Add("NewStyle");

style.Borders[ExcelBordersIndex.EdgeLeft].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeRight].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeTop].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeBottom].LineStyle = ExcelLineStyle.Thick;
style.Borders.Color = ExcelKnownColors.Red;

style.Font.Bold = true;
style.Font.Color = ExcelKnownColors.Green;
style.Font.Size = 24;
#endregion

//Applying style for merged region
worksheet.Range[2, 1].MergeArea.CellStyle = style;

workbook.SaveAs("../../../Output/MergeArea_Style.xlsx");
}
{% endhighlight %}

{% highlight c# tabtitle="C# [Windows-specific]" %}
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Xlsx;
IWorkbook workbook = application.Workbooks.Open("../../Data/Input.xlsx");
IWorksheet worksheet = workbook.Worksheets[0];

# region Creating a new style
IStyle style = workbook.Styles.Add("NewStyle");

style.Borders[ExcelBordersIndex.EdgeLeft].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeRight].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeTop].LineStyle = ExcelLineStyle.Thick;
style.Borders[ExcelBordersIndex.EdgeBottom].LineStyle = ExcelLineStyle.Thick;
style.Borders.Color = ExcelKnownColors.Red;

style.Font.Bold = true;
style.Font.Color = ExcelKnownColors.Green;
style.Font.Size = 24;
#endregion

//Applying style for merged region
worksheet.Range[2,1].MergeArea.CellStyle = style;

workbook.SaveAs("../../Output/MergeArea_Style.xlsx");
}
{% endhighlight %}

{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %}
Using excelEngine As New ExcelEngine()
Dim application As IApplication = excelEngine.Excel
application.DefaultVersion = ExcelVersion.Xlsx

Dim workbook As IWorkbook = application.Workbooks.Open("../../Data/Input.xlsx")
Dim worksheet As IWorksheet = workbook.Worksheets(0)

' Creating a new style
Dim style As IStyle = workbook.Styles.Add("NewStyle")
style.Borders(ExcelBordersIndex.EdgeLeft).LineStyle = ExcelLineStyle.Thick
style.Borders(ExcelBordersIndex.EdgeRight).LineStyle = ExcelLineStyle.Thick
style.Borders(ExcelBordersIndex.EdgeTop).LineStyle = ExcelLineStyle.Thick
style.Borders(ExcelBordersIndex.EdgeBottom).LineStyle = ExcelLineStyle.Thick
style.Borders.Color = ExcelKnownColors.Red
style.Font.Bold = True
style.Font.Color = ExcelKnownColors.Green
style.Font.Size = 24

' Applying style for merged region
worksheet.Range(2, 1).MergeArea.CellStyle = style

workbook.SaveAs("../../Output/MergeArea_Style.xlsx")
End Using
{% endhighlight %}
{% endtabs %}

A complete working example to apply border styles for merged cells using C# is present on <a href="https://github.com/SyncfusionExamples/XlsIO-Examples/tree/master/FAQ/Border%20styles%20for%20merged%20cells/.NET/Borderstylesformergedcells">this GitHub page</a>.