Question

I am adding some data to Excel file using C# Window form application. But after executing the program, to open excel file i need to close the Window form otherwise i am not able to open not only the excel file to which i added the data but also the any excel file. when i tried to open any excel file without closing Window form application it was not showing any data and cells(just a blank screen).

i need to close my appilcation to view the excel files.Even at the i wrote the code for releasing the COM objects.

        workbook = appExl.Workbooks.Open(Excel_file, 0,false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false);
        workbook.Save();            
        System.Runtime.InteropServices.Marshal.ReleaseComObject(ShtRange);
        System.Runtime.InteropServices.Marshal.ReleaseComObject(NwSheet);           
        workbook.Close(true, Missing.Value, Missing.Value);
        System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook);
        appExl.Quit();
        System.Runtime.InteropServices.Marshal.ReleaseComObject(appExl);

so please help me how to open excel file without closing application after execution?

Answer 1

Here is a sample code in which i write to excel sheet using C# and it works great.Use folllowing namespaces
using Microsoft.Office.Interop.Excel;
using Excel = Microsoft.Office.Interop.Excel;

check this out

   Excel.Application XlApp = null;
        Excel.Workbook workbook = null;
        Excel.Worksheet Ws = null;
        Excel.Range Range1 = null;
        Excel.Worksheet X = null;

        XlApp = new Excel.Application();
        XlApp.Visible = true;
        workbook = XlApp.Workbooks.Add(XlWBATemplate.xlWBATWorksheet);
        Ws = (Excel.Worksheet)workbook.Worksheets[1];
        XlApp.WindowState = XlWindowState.xlMaximized;


                Ws = (Excel.Worksheet)workbook.Worksheets[1];

                Ws.Activate();
                Ws.Name = "MyFirstSheet";



              int rowIndex = 1; int columnIndex = 2;
               xlApp.Cells(rowIndex, columnIndex) = "Blah"