Activate a Worksheet

8 Dec 20233 minutes to read

If there are more worksheets in a workbook, certain worksheets should be active while opening the workbook in Microsoft Excel.

The following code shows how to activate a worksheet in workbook containing three worksheets with Interop and XlsIO for .NET.

Interop

C#

private void ActivateWorksheet()
{
  //Instantiate the application object
  var excelApp = new Microsoft.Office.Interop.Excel.Application();

  //Specify the template Excel file path
  string myPath = "Sample.xlsx";

  //Open the Excel file
  Workbook workbook = excelApp.Workbooks.Open(myPath);

  //Activate the first worksheet by default
  workbook.Sheets[1].Activate();

  //Save as Excel file
  workbook.SaveCopyAs("InteropOutput_ActivateWorksheet.xlsx");

  //Quit the application
  excelApp.Quit();
}

VB.NET

Private Sub ActivateWorksheet()
  'Instantiate the application object
  Dim excelApp = New Microsoft.Office.Interop.Excel.Application()

  'Specify the template Excel file path
  Dim myPath As String = "Sample.xlsx"

  'Open the Excel file
  Dim workbook As Workbook = excelApp.Workbooks.Open(myPath)

  'Activate the first worksheet by default
  workbook.Sheets(1).Activate()

  'Save as Excel file
  workbook.SaveCopyAs("InteropOutput_ActivateWorksheet.xlsx")

  'Quit the application
  excelApp.Quit()
End Sub

XlsIO

C#

private void ActivateWorksheet()
{
  using (ExcelEngine excelEngine = new ExcelEngine())
  {
    //Instantiate the application object
    IApplication application = excelEngine.Excel;

    //Specify the template Excel file path
    string myPath = "Sample.xlsx";

    //Instantiate a new workbook
    //Open the Excel file
    IWorkbook workbook = application.Workbooks.Open(myPath);

    //Activate the first worksheet by default
    workbook.Worksheets[0].Activate();

    //Save as Excel file
    workbook.SaveAs("XlsIOOutput_ActivateWorksheet.xlsx");
  }
}

VB.NET

Private Sub ActivateWorksheet()
  Using excelEngine As ExcelEngine = New ExcelEngine()
    'Instantiate the application object
    Dim application As IApplication = excelEngine.Excel

    'Specify the template Excel file path
    Dim myPath As String = "Sample.xlsx"

    'Instantiate a new workbook
    'Open the Excel file
    Dim workbook As IWorkbook = application.Workbooks.Open(myPath)

    'Activate the first worksheet by default
    workbook.Worksheets(0).Activate()

    'Save as Excel file
    workbook.SaveAs("XlsIOOutput_ActivateWorksheet.xlsx")
  End Using
End Sub