Hi Rob,

This doesn't seem to work as is

  if (resourceEvent)                              
                  {
                      // Remove instructors who don't have anything planned
                      var query = dtInstructors.AsEnumerable().Where(c => dtAllScheduled.AsEnumerable().Any(b =>  1 == b.Field<Byte>("layer") 
                                          && true==b.Field<Boolean>("schdassign") && c.Field<String>("instr_id")== b.Field<String>("resource_id")
                                          ));
                      query.CopyToDataTable(dtInstructors, LoadOption.OverwriteChanges);
                  }

My dtInstructors has rows but dtAllScheduled does not.

After the query I am supposed to get 0 rows in the dtInstructors but it seems to be the same table as it was before the query. Do you see how can I adjust the code to get the query "overwrite" my original table?

Thanks.