ต้องการเปิดไฟล์ Excel ขึ้นมาค่ะ ASP.NET C#

 Excel.Workbook xlWorkBook;
        Excel.Worksheet xlWorkSheet;
     object mis = Type.Missing;
 var strFileName = Server.MapPath(".\\Uploads\\CCSFile\\GenExcel.xls");

 Excel.Application xlApp = new Excel.Application();
            xlWorkBook = xlApp.Workbooks.Open(strFileName, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
           
         xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
           xlWorkSheet.Name = "My Sheet";

 xlWorkBook.Close(true, mis, mis);
         
           xlApp.Quit();
         
            System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(xlWorkBook);
 xlApp = null;
            xlWorkBook = null;
            xlWorkSheet = null;
            GC.Collect();