Comments by Member 13608602 (Top 4 by date)

but i need to add a detail column to datatable 3 and delete de rows dont mismatch with datatable 1, i did't kown how to do it.

ID 15 is not threated becouse it is not in dtatable1(ID)

I tried that: but it not works

var filter = from firstDt in ds.AsEnumerable()where !(from secondDt in dsDC.AsEnumerable() select secondDt["Name"]).Contains(firstDt["Name"].ToString())
select firstDt;
DataTable resultDt = filter.CopyToDataTable();