>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.

Is it throwing an InvalidOperationException that is being caught elsewhere? See the conditions for that exception at http://msdn.microsoft.com/en-us/library/bb359707(v=vs.110).aspx