Question

I’ve been trying to export the content data of my ListView control into an Excel application using C#. I’ve already done this before using VB.NET and I tried to convert my code to C# but it failed but I made a modification on it and seems everything is fine on code below except for the last part which to save the data as an excel file. I need an assistance to modify this code correctly. I would greatly appreciate your helpful response.

The code below that got an error is:

oBook.SaveAs(SaveFileDialog1.InitialDirectory.ToString() + SaveFileDialog1.FileName);

Error 5 No overload for method ‘SaveAs’ takes ‘1’ arguments

private void Button4_Click(object sender, System.EventArgs e)
{
    int row = 0;
    int col = 0;
    int row2 = 0;
    int col2 = 0;
    int ch = 0;
    int ctr = 0;

    ctr = 0;
    row2 = 1;
    col2 = 3;

    row = 3;
    col = 3;

    Microsoft.Office.Interop.Excel.Application oExcel = new Microsoft.Office.Interop.Excel.Application();
    oExcel.Visible = false;
    Microsoft.Office.Interop.Excel.Workbook oBook = oExcel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlSheetType.xlWorksheet);
    Microsoft.Office.Interop.Excel.Worksheet oSheet = (Microsoft.Office.Interop.Excel.Worksheet)oExcel.ActiveSheet;


    SaveFileDialog SaveFileDialog1 = new SaveFileDialog();
    SaveFileDialog1.Filter = "Excel File|*.xlsx|Word File|*.doc|Text File|*.txt";
    SaveFileDialog1.Title = "Save As";

    if (SaveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
    {
         switch (SaveFileDialog1.FilterIndex)
         {
            case 1:
            {
                for (ch = 1; ch <= ListView1.Columns.Count; ch++)
                {
                    oSheet.Cells[row2, col2] = ListView1.Columns[ctr].Text;

                    col2 = col2 + 1;
                    ctr = ctr + 1;
                }

                foreach (ListViewItem lview in ListView1.Items)
                {
                    foreach (ListViewItem.ListViewSubItem lview2 in lview.SubItems)
                    {
                        oSheet.Cells[row, col] = lview2.Text;
                        col = col + 1;
                    }

                    col = 3;
                    row = row + 1;
                }

                oBook.SaveAs(SaveFileDialog1.InitialDirectory.ToString() + SaveFileDialog1.FileName);
                oExcel.Quit();
                SaveFileDialog1.Dispose();
                MessageBox.Show("Data has been successfully saved", string.Empty, MessageBoxButtons.OK, MessageBoxIcon.Information);
                break;
            }
         }

Answer 1

The workbook SaveAs method takes 11 parameters. In C# you have to pass something for these optional parameters even if you do not care about them. The easiest thing to do here is pass System.Reflection.Missing.Value for those you do not care about. It is a pain though.