سلام دوستان.من کدهای زیر رو وارد می کنم و اکسپشن رو هم می زارم .لطفا ایرادهامو بگید.ممنون
string command = @"BACKUP DATABASE [accounting] TO  DISK = N'" + strFileName + "' WITH NOFORMAT, NOINIT,  NAME = N'accounting-Full Database Backup', SKIP, NOREWIND, NOUNLOAD,  STATS = 10";

                this.Cursor = Cursors.WaitCursor;

                SqlCommand oCommand = null;

                SqlConnection oConnection = null;



                string scnn = @"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirector  y|\accounting.mdf;trusted_connection=yes;";

                oConnection = new SqlConnection(scnn);

                if (oConnection.State != ConnectionState.Open)

                    oConnection.Open();

                oCommand = new SqlCommand(command, oConnection);

                oCommand.ExecuteNonQuery();

                this.Cursor = Cursors.Default;

                oConnection.Close();



اینم اکسپشن