C # DataTable adds row (DataRow) data to a row in another DataTable

Two tables A and B, the two tables have the same structure. Now it is necessary to copy some of the rows in table A to table B, using DataTableB.rows.add (Datatablea.rows[0]) as a way to report "Row already belongs to a table" error;

Method One:

                       //get some of the rows in table adatarow[] DrA = Dta.select ("aimtype=3"); //Instance BDataTable DtB =Dta.clone (); if(Dra.length >0)                        {                            foreach(DataRow DrvalinchDrA) {                                //Add rows to BDtb.importrow (Drval); }                        }

Method Two:

                        //get some of the rows in table adatarow[] DrA = Dta.select ("aimtype=3"); //Instance BDataTable DtB =Dta.clone (); if(Dra.length >0)                        {                            foreach(DataRow DrvalinchDrA) {                                //Add rows to BDtB.Rows.Add (Drval.itemarray); }                        }            

--Remember Ming

C # DataTable adds row (DataRow) data to a row in another DataTable