q; copy daya from one dataset to another

[JIM.H.]

Hello,
I am trying to write the data I got from a web service to my table in SQL
Server
I need to append the dataset wsDS to the dataset ds and do update.

PVS.myWS.Loader load = new PVS.myWS.Loader();
DataSet wsDS=load.WsLoad();
dataGrid1.DataSource=wsDS;

string strConn = ConfigurationSettings.AppSettings["connectionString"];
SqlConnection sqlConn = new SqlConnection(strConn);

DataSet ds = new DataSet();
SqlDataAdapter daRS = new SqlDataAdapter("SELECT * From myTable", sqlConn);
SqlCommandBuilder cbRS = new SqlCommandBuilder(daRS);
sqlConn.Open();
daRS.Fill(ds,"myTable");

/* ??? here I need some code */
/* Append data in wsDS to ds to write it back to myTable */

daRS.Update(ds,"myTable");
sqlConn.Close();

Can anyone give me the easiest and fasted way?