Question

I have this code:

Microsoft.Office.Interop.Excel.Application xla = new Microsoft.Office.Interop.Excel.Application();
xla.Visible = false;
Workbook wb = xla.Workbooks.Add(XlSheetType.xlWorksheet);
Worksheet ws = (Worksheet)xla.ActiveSheet;
ws.Name = "Serial";
int i = 1;
foreach (DataRow comp in dsView.Tables[0].Rows)
{
    ws.Cells[i, 1] = "'" + comp[0].ToString();
    ws.Cells[i, 2] = "'" + comp[1].ToString();
    ws.Cells[i, 3] = "'" + comp[2].ToString();
    i++;
}
if (File.Exists(@"d:\DDD.xlsx"))
    File.Delete(@"d:\DDD.xlsx");
xla.Save(@"d:\DDD.xlsx");    ---->>>>  on this line i get the error

The error:

Exception from HRESULT: 0x800A03EC

I am working on C# winforms with Office 2012

Answer 1

Your problem is that the variable xla is your excel application and not a workbook. You want to save the workbook.

so

xla.Save(@"d:\DDD.xlsx");    ---->>>>  on this line i get the error

should be

wb.SaveAs(@"d:\DDD.xlsx", System.Reflection.Missing.Value,System.Reflection.Missing.Value,System.Reflection.Missing.Value,
                System.Reflection.Missing.Value,System.Reflection.Missing.Value,Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange,System.Reflection.Missing.Value,
                System.Reflection.Missing.Value,System.Reflection.Missing.Value,System.Reflection.Missing.Value,System.Reflection.Missing.Value);