从Table1中筛选某些行后赋值给Table2

 DataTable Table1= new DataTable();//定义Table1

 DataTable Table2= new DataTable();//定义Table2
 DataView view = new DataView();//定义视图view

 Table1= bClass.GetDate();//给Table1赋值
 view = Table1.DefaultView;

 view.RowFilter = string.Format("编码='{0}'", this.txtCode.Text.ToString());//筛选数据
 Table2= view.ToTable();//给Table2赋值