992760 - How to Set the First Item in a List as the Default Selected Value in an Excel File Using XlsIO

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Document-Processing/Excel/Excel-Library/NET/faqs/how-to-set-the-first-item-in-a-list-as-the-default-selected-value-in-an-Excel-file.md

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+---
+title: Set Default List Item in Excel Data Validation | Syncfusion
+description: Learn to programmatically select the first item in an Excel data-validation list with Syncfusion’s .NET Excel library (XlsIO) using C# and VB.NET. 
+platform: document-processing
+control: XlsIO
+documentation: UG
+---
+
+# How to set the first item in a list as the default value in an Excel?
+
+You can programmatically make the first item in a data-validation list the default selection in an Excel file by using Syncfusion XlsIO. The following examples in C# (cross-platform and Windows-specific) and VB.NET demonstrate the process.
+
+{% tabs %}
+{% highlight c# tabtitle="C# [Cross-platform]" playgroundButtonLink="https://raw.githubusercontent.com/SyncfusionExamples/XlsIO-Examples/master/FAQ/List%20Validation/.NET/List%20Validation/List%20Validation/Program.cs,180" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    IWorkbook workbook = application.Workbooks.Create(1);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    worksheet["A1"].Value = "ListItem1";
+    worksheet["A2"].Value = "ListItem2";
+    worksheet["A3"].Value = "ListItem3";
+    worksheet["A4"].Value = "ListItem4";
+
+    worksheet.Range["C1"].Text = "Data Validation List in C3";
+    worksheet.Range["C1"].AutofitColumns();
+
+    //Data validation for the list
+    IDataValidation listValidation = worksheet.Range["C3"].DataValidation;        
+    listValidation.DataRange = worksheet.Range["A1:A4"];
+
+    //Set the first item in the list as default value
+    worksheet.Range["C3"].Value = worksheet.Range["C3"].DataValidation.DataRange.Cells[0].Value;
+
+
+    #region Save
+    //Saving the workbook
+    workbook.SaveAs("../../../Output/ListValidation.xlsx");
+    #endregion
+}
+{% endhighlight %}
+
+{% highlight c# tabtitle="C# [Windows-specific]" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+    IApplication application = excelEngine.Excel;
+    application.DefaultVersion = ExcelVersion.Xlsx;
+    IWorkbook workbook = application.Workbooks.Create(1);
+    IWorksheet worksheet = workbook.Worksheets[0];
+
+    worksheet["A1"].Value = "ListItem1";
+    worksheet["A2"].Value = "ListItem2";
+    worksheet["A3"].Value = "ListItem3";
+    worksheet["A4"].Value = "ListItem4";
+
+    worksheet.Range["C1"].Text = "Data Validation List in C3";
+    worksheet.Range["C1"].AutofitColumns();
+
+    //Data validation for the list
+    IDataValidation listValidation = worksheet.Range["C3"].DataValidation;
+    listValidation.DataRange = worksheet.Range["A1:A4"];
+
+    //Set the first item in the list as default value
+    worksheet.Range["C3"].Value = worksheet.Range["C3"].DataValidation.DataRange.Cells[0].Value;
+
+
+    #region Save
+    //Saving the workbook
+    workbook.SaveAs("../../Output/ListValidation.xlsx");
+    #endregion
+}
+{% endhighlight %}
+
+{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %}
+Using excelEngine As New ExcelEngine()
+    Dim application As IApplication = excelEngine.Excel
+    application.DefaultVersion = ExcelVersion.Xlsx
+
+    'Create a workbook and access the first worksheet
+    Dim workbook As IWorkbook = application.Workbooks.Create(1)
+    Dim worksheet As IWorksheet = workbook.Worksheets(0)
+
+    'Populate list items
+    worksheet("A1").Value = "ListItem1"
+    worksheet("A2").Value = "ListItem2"
+    worksheet("A3").Value = "ListItem3"
+    worksheet("A4").Value = "ListItem4"
+
+    'Header for the validation cell
+    worksheet.Range("C1").Text = "Data Validation List in C3"
+    worksheet.Range("C1").AutofitColumns()
+
+    'Create list‐type data validation for cell C3
+    Dim listValidation As IDataValidation = worksheet.Range("C3").DataValidation
+    listValidation.DataRange = worksheet.Range("A1:A4")
+
+    'Set the first list item as the default value
+    worksheet.Range("C3").Value = listValidation.DataRange.Cells(0).Value
+
+    'Save the workbook
+    workbook.SaveAs("../../Output/ListValidation.xlsx")
+End Using
+{% endhighlight %}
+{% endtabs %}
+A complete working example to set the first item in a list as the default selected value in an Excel File is available on <a href="https://github.com/SyncfusionExamples/XlsIO-Examples/tree/master/FAQ/List%20Validation/.NET/List%20Validation">this GitHub page</a>.