Get the diference between two datatable

[ppr (Peter Preuss)]

Hope you remember the set operation as it can be used for this:

Remove unmatched rows

@jntrk welcome to the forum the case looks like it could be solved with the help of set operations find some demo here: DataTable_SetOperations.xaml (8.9 KB) So we could do it with an except: dtMain.AsEnumerable.Except(dtRemove.AsEnumerable, DataRowComparer.Default).CopyToDataTable ensure following: in case of empty results are to expect apply following pattern: [grafik]