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+---
+title: How to apply styles to an Entire Excel Worksheet | Syncfusion 
+description: Learn how to apply font settings and fill color to an entire Excel worksheet using the Syncfusion .NET Excel library (XlsIO) in C# and VB.NET.
+platform: document-processing 
+control: XlsIO 
+documentation: UG
+---
+
+# How to apply styles to the entire worksheet in Excel?
+
+The following examples show how to apply font attributes (name and size) and fill color to an entire worksheet using C# (cross-platform and Windows-specific) and VB.NET.
+
+{% tabs %}
+{% highlight c# tabtitle="C# [Cross-platform]" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    IWorkbook workbook = application.Workbooks.Open("../../../Data/Input.xlsx", ExcelOpenType.Automatic);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    //Define new styles to apply in rows and columns
+    IStyle columnStyle = workbook.Styles.Add("ColumnStyle");
+    columnStyle.Font.FontName = "Times New Roman";
+    columnStyle.Font.Size = 10;
+    columnStyle.Color = Color.Pink;
+
+    worksheet.SetDefaultColumnStyle(1, 16384, columnStyle);
+
+    //Save the Excel document
+    workbook.SaveAs("../../../Output/FontStyle.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", ExcelOpenType.Automatic);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    //Define new styles to apply in rows and columns
+    IStyle columnStyle = workbook.Styles.Add("ColumnStyle");
+    columnStyle.Font.FontName = "Times New Roman";
+    columnStyle.Font.Size = 10;
+    columnStyle.Color = Color.Pink;
+
+    worksheet.SetDefaultColumnStyle(1, 16384, columnStyle);
+
+    //Save the Excel document
+    workbook.SaveAs("../../Output/FontStyle.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", ExcelOpenType.Automatic)
+    Dim worksheet As IWorksheet = workbook.Worksheets(0)
+
+    'Define new styles to apply in rows and columns
+    Dim columnStyle As IStyle = workbook.Styles.Add("ColumnStyle")
+    columnStyle.Font.FontName = "Times New Roman"
+    columnStyle.Font.Size = 10
+    columnStyle.Color = Color.Pink
+
+    worksheet.SetDefaultColumnStyle(1, 16384, columnStyle)
+
+    'Save the Excel document
+    workbook.SaveAs("../../Output/FontStyle.xlsx")
+End Using
+{% endhighlight %} 
+{% endtabs %}
+
+N>
+* Applying a default style to cells replaces any existing styles. This is standard Excel behavior.
+* To add new styling  without removing existing formats, set specific properties on targeted ranges.
+
+The following code snippet shows how to apply a new style without affecting existing styles:
+
+{% tabs %}
+{% highlight c# tabtitle="C# [Cross-platform]" %}
+ worksheet.Range["A1:F13"].CellStyle.Font.FontName = "Times New Roman";
+ worksheet.Range["A1:F13"].CellStyle.Font.Size = 10;
+ worksheet.Range["A1:F13"].CellStyle.Color = Color.Lavender;
+{% endhighlight %}
+
+{% highlight c# tabtitle="C# [Windows-specific]" %} 
+ worksheet.Range["A1:F13"].CellStyle.Font.FontName = "Times New Roman";
+ worksheet.Range["A1:F13"].CellStyle.Font.Size = 10;
+ worksheet.Range["A1:F13"].CellStyle.Color = Color.Lavender;
+{% endhighlight %}
+
+{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %} 
+worksheet.Range("A1:F13").CellStyle.Font.FontName = "Times New Roman"
+worksheet.Range("A1:F13").CellStyle.Font.Size = 10
+worksheet.Range("A1:F13").CellStyle.Color = Color.Lavender
+{% endhighlight %} 
+{% endtabs %}
+