C# 基于DataTable数据筛选Linq整理

DataRow[] orderdt = dt.Select(“where条件”);

DataRow[]  subOrderdt = orderdt.CopyToDataTable().Select(“where条件”)

 

List筛选：

过滤重复数据

var list_distinct = list.GroupBy(s => new {s.OrderType, s.SubOrderType }).Select(s => s.First());