Hello,
I did following code to open an excel sheet and now just close it. But
the problem is that the excel process created in my code is still
there when I use:
                   excelApp.Quit();
                   Marshal.ReleaseComObject(excelApp);
What else should I do to properly shutdown the excel process?

many Thanks.

Here is my code:
Microsoft.Office.Interop.Excel.Application excelApp=null;
           Microsoft.Office.Interop.Excel.Workbook newWorkbook =
null;
           Microsoft.Office.Interop.Excel.Sheets excelSheets = null;
           Microsoft.Office.Interop.Excel.Worksheet sheet = null;
           try
           {
               excelApp = new
Microsoft.Office.Interop.Excel.ApplicationClass();
               //openExcelDoc.InitialDirectory =
string.Format(@"{0}Carweb", drives[0]);

               excelApp.Visible = false;
               newWorkbook =
excelApp.Workbooks.Open(templateExcelPath, 0, false, 5, "", "", false,
Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "", true, false,
0, true, false, false);
               excelSheets = newWorkbook.Worksheets;
               foreach (Microsoft.Office.Interop.Excel.Worksheet
excelWorksheet in excelSheets)
               {
                   string name = excelWorksheet.CodeName;
                   name = excelWorksheet.Name;
               }
           }
           finally
           {
               if (sheet != null)
               {

                   Marshal.ReleaseComObject(sheet);
               }
               if (excelSheets != null)
               {
                   Marshal.ReleaseComObject(excelSheets);
               }
               if (newWorkbook != null)
               {
                   newWorkbook.Close(Missing.Value, Missing.Value,
Missing.Value);
                   Marshal.ReleaseComObject(newWorkbook);
               }
               if (excelApp != null)
               {
                   excelApp.Quit();
                   Marshal.ReleaseComObject(excelApp);
               }