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   attach VBA Code to a workbook in Excel
   taken from Example07.cs
   Maybe you have to change the excel security settings to
   access the VBE in excel or you get an exception. A good
   tutorial to work with VBE:    
public void Example07Main()
   string workbookFile = null;
   Excel.Application excelApplication = null;
      // start excel and turn off msg boxes
      excelApplication = new Excel.Application();
      excelApplication.DisplayAlerts = false;
      excelApplication.Visible = false;

      // add a new workbook
      Excel.Workbook workBook = excelApplication.Workbooks.Add();
      // add new global Code Module
      VBE.VBComponent globalModule = workBook.VBProject.VBComponents.Add(
vbext_ComponentType.vbext_ct_StdModule); globalModule.Name = "MyNewCodeModule"; // add a new procedure to the modul globalModule.CodeModule.InsertLines(1,
"Public Sub HelloWorld(Param as string)\r\n” +
"MsgBox \"Hello World!\" & vbnewline & Param\r\nEnd Sub"
); // create a click event trigger for the first worksheet int linePosition =
"BeforeDoubleClick", "Worksheet");
linePosition + 1, "HelloWorld \"BeforeDoubleClick\""); // display info in the worksheet Excel.Worksheet sheet = (Excel.Worksheet)workBook.Worksheets[1]; sheet.Cells[2, 2].Value =
"This workbook contains dynamic created VBA Moduls and Event Code";
sheet.Cells[5, 2].Value =
"Open the VBA Editor to see the code";
sheet.Cells[8, 2].Value =
"Do a double click to catch the BeforeDoubleClick Event from this Worksheet."; // save the book string fileExtension = GetDefaultExtension(excelApplication); workbookFile = string.Format("{0}\\Example07{1}",
Application.StartupPath, fileExtension);
workBook.SaveAs(workbookFile, Missing.Value, Missing.Value, Missing.Value,
Missing.Value, Missing.Value, XlSaveAsAccessMode.xlExclusive); } catch (System.Reflection.TargetInvocationException throwedException) { // not trusted string message = string.Format(
"An error is occured.{0}ExceptionTrace:{0}", Environment.NewLine); Exception exception = throwedException; while (null != exception) { message += string.Format("{0}{1}", exception.Message, Environment.NewLine); exception = exception.InnerException; } MessageBox.Show(message); } finally { // close excel and dispose reference excelApplication.Quit(); excelApplication.Dispose(); } } /// <summary> /// returns the valid file extension for the instance. for example ".xls" or ".xlsm" /// </summary> /// <param name="application">the instance</param> /// <returns>the extension</returns> private static string GetDefaultExtension(Excel.Application application) { double Version = Convert.ToDouble(application.Version, CultureInfo.InvariantCulture); if (Version >= 120.00) return ".xlsm"; else return ".xls"; }

Last edited May 14, 2012 at 5:52 AM by SebastianDotNet, version 12


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