c# - Visual Studio 2010 Ignoring All query Errors? -


i using visual studio 2010 , asp.net c# language. try read excel sheet insert information microsoft sql database, found problem ignoring error in query statement.

for (int = 0; < objdatasetdto.tables[0].rows.count; i++) {   start_time = convert.todatetime(objdatasetdto.tables[0].rows[i]["start"].tostring());   end_time = convert.todatetime(objdatasetdto.tables[0].rows[i]["end"].tostring());   if (objdatasetdto.tables[0].rows[i]["lecture_day"].tostring().equals("1"))   {      try      {         query = "insert [m].[lecture]([dd],[start_time],[end_time],[week_no],[sec_no],                  [room_no],[building_no]) "+                  values('" + calendar1.selecteddate.toshortdatestring() + "','" +                  start_time.toshorttimestring() + "','" + end_time.toshorttimestring() +                   "','1','" + objdatasetdto.tables[0].rows[i]["section_no"].tostring() + "','"                   + objdatasetdto.tables[0].rows[i]["room_no"].tostring() + "','"                   + objdatasetdto.tables[0].rows[i]["building_no"].tostring() + "');";         ifexist = new sqlcommand(query, cnn);       }       catch (exception ex)       {          response.write(ex);       }     }//end if  }// end loop

i wrote [dd] column instead of [date] test if detect error or not. ignores them completely.

how can solve problem.

you don't appear executing sqlcommand. try adding:

ifexist.executescalar();

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