I am trying to add a new worksheet to an Excel workbook and make this the last worksheet in the book in C# Excel Interop.
It seems really simple, and I thought the below code would do it:
using System.Runtime.InteropServices;
using Excel = Microsoft.Office.Interop.Excel;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
var excel = new Excel.Application();
var workbook = excel.Workbooks.Open(@"C:estTest.xlsx");
workbook.Sheets.Add(After: workbook.Sheets.Count);
workbook.Save();
workbook.Close();
Marshal.ReleaseComObject(excel);
}
}
}
No such luck. I get this helpful error:
COMException was unhandled - Exception from HRESULT: 0x800A03EC
I found this page on Microsoft.com which suggested I try and add the sheet first and then move it so I tried that as shown below. I know that this webpage targets Excel 95 but the VBA is still there to use so I was hoping it would still work:
using System.Runtime.InteropServices;
using Excel = Microsoft.Office.Interop.Excel;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
var excel = new Excel.Application();
var workbook = excel.Workbooks.Open(@"C:estTest.xlsx");
workbook.Sheets.Add();
workbook.Sheets.Move(After: workbook.Sheets.Count);
workbook.Save();
workbook.Close();
Marshal.ReleaseComObject(excel);
}
}
}
I get the same error as above. I have also tried passing the name of my last worksheet as a string as the After
parameter in both the Add
and Move
methods, no joy!
That is what I have tried, so my question is how do I add a worksheet to an Excel workbook and make this the last sheet in the workbook using C# Excel Interop?
Thanks
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