Update group of records

SqlDataAdapter daAuthors = new SqlDataAdapter("Select Id,Name From ttt", DA.Data.SqlConnectionString.Conn);
DataSet ds = new DataSet("Pubs");
daAuthors.Fill(ds, "ttt");
ds.Tables[0].TableName = "ttt";
DataRow dr=ds.Tables[0].NewRow();
dr["Name"]="Arun";
ds.Tables[0].Rows.Add(dr);

SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(daAuthors);
daAuthors.InsertCommand = cmdBuilder.GetInsertCommand(true);
daAuthors.UpdateCommand = cmdBuilder.GetUpdateCommand(true);
daAuthors.DeleteCommand = cmdBuilder.GetDeleteCommand(true);
daAuthors.Update(ds, "ttt");