Excel.Workbook xlWorkBook;
            Excel.Worksheet xlWorkSheet;
            object misValue = System.Reflection.Missing.Value;
            xlWorkBook = xlApp.Workbooks.Add(misValue);
            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

            //Write Column Headers
            xlWorkSheet.Cells[1, 1] = "Name";
            xlWorkSheet.Cells[1, 2] = "Address";
            xlWorkSheet.Cells[1, 3] = "Phone Number";
            xlWorkSheet.Cells[1, 4] = "Postal Code";
            xlWorkSheet.Cells[1, 5] = "Region";
            xlWorkSheet.Cells[1, 6] = "Locality";

            //Populate cells with participant information
            xlWorkSheet.Cells[i + 1, 1] = participantName[i];
            xlWorkSheet.Cells[i + 1, 2] = participantAddress[i];
            xlWorkSheet.Cells[i + 1, 3] = participantNumber[i];
            xlWorkSheet.Cells[i + 1, 4] = participantPostalCode[i];
            xlWorkSheet.Cells[i + 1, 5] = participantRegion[i];
            xlWorkSheet.Cells[i + 1, 6] = participantLocality[i];


                //Save Workbook and safely close it
             xlWorkBook.SaveAs("c:\csharp-Excel.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
             xlWorkBook.Close(true, misValue, misValue);
             xlApp.Quit();

             //Release the objects
                releaseObject(xlWorkSheet);
                releaseObject(xlWorkBook);
                releaseObject(xlApp);