How to solve the problem in Excel Application

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C#

Hi,

I am using excel application in my project. I am taking the excel template and filling that excel workbook and saving it into the new folder, it all works fine. After I am filling the excel application and saving that with the same file name it asks for: DO you want to replace the file?. If I click the no button it says that you want to make the changes to the Excel Template. Can anyone help me to solve this problem.Here is the code for saving the application:

excelWorkbook.SaveAs(@"D:\RiteFile\" + filename + ".xlsm");
               string path = @"D:\RiteFile\" + filename + ".xlsm";

               //excelApp.Visible = true;
               excelApp.UserControl = false;
               excelWorkbook.Close();
               excelApp.Workbooks.Close();
               excelApp.Quit();
               System.Runtime.InteropServices.Marshal.ReleaseComObject(excelWorkbook);
               System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
               excelWorkbook = null;
               excelApp = null;
               System.Diagnostics.Process.Start(path);

           }
       }
       catch (Exception ex)
       {
           //UserUtil.Message(ex.Message, this);
           excelApp.UserControl = false;
           //excelWorkbook.Close();
           excelApp.Workbooks.Close();
           excelApp.Quit();
           //System.Runtime.InteropServices.Marshal.ReleaseComObject(excelWorkbook);
           System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
           //excelWorkbook = null;
           excelApp = null;

       }

Thanks in Advance