VS C# and only committing records that have a value in a certain column

Using VS C# I populate a dataset and then using a data grid view I display a grid on the screen. There 8 columns and 12 rows displayed at once. The first column is the most significant. In this case it is a job number.  Right now when this code is executed all records are committed to the database. My question is this. Is there a way to only write the records that have a job number? In other words is there a way to filter the committed records to only be the records that have a value for job number? Should I not be using command builder? I could provide additional code if that would be helpful.
            try
            {
                _commandBuilder.GetUpdateCommand();

                DistDataAdapter.Update(DistDataSet);
            }
            catch (Exception ex)
            {
                string eMsg = "View-JL-004: ERROR: " + ex.Message;
                if (Model.stackTraceWanted) eMsg += "\n" + ex.StackTrace;
                MessageBox.Show(eMsg);
            }