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blogTitle:'LinQ中合并、连接、相交、与非查询',
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推荐过这篇日志的人：
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转载记录：
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{list x.l as y}
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{list wl as x}{/list}1 public class UserCopy
public class LoginEntity
public string UserName { get; set; }
public string UserPwd { get; set; }
public DateTime ActiveTime { get; set; }
public class UserEntity : LoginEntity
public string UserID { get; set; }
public Int16 UserSex { get; set; }
public Int32 UserAge { get; set; }
protected void UserCopy()
List&UserEntity& userList = new List&UserEntity&() {
new UserEntity(){
UserID="U1",
UserName="U1",
UserPwd="U1PWD",
ActiveTime=DateTime.Now
new UserEntity(){
UserID="U2",
UserName="U2",
UserPwd="U2PWD",
ActiveTime=DateTime.Now},
new UserEntity(){
UserID="U2",
UserName="U2",
UserPwd="U2PWD",
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List&LoginEntity& loginList = new List&LoginEntity&();
//关键代码：遍历赋值
userList.ForEach(user =& loginList.Add(new LoginEntity()
UserName = user.UserName,
UserPwd = user.UserPwd,
ActiveTime = user.ActiveTime
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posts - 417,comments - 31,trackbacks - 0
转自：/cyberarmy/p/3505138.html
using System.L
List&string& ListA = new List&string&();
List&string& ListB = new List&string&();
List&string& ListResult = new List&string&();
ListResult = ListA.Distinct().ToList();//去重
ListResult = ListA.Except(ListB).ToList();//差集
ListResult= ListA.Union(ListB).ToList();& //并集
ListResult = ListA.Intersect(ListB).ToList();//交集
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id:'fks_',
blogTitle:'Linq处理List数据',
blogAbstract:'
概述：LINQ又称为语言集成查询，是一种类似于SQL的一种查询语言。语言集成查询让开发人员可以使用.NET程序语言（如C#）去查询数据源，主要数据源为内存中的集合对象、ADO.NET数据集、数据库以及XML，开发人员不用去分门别类地学习众多的查询语法就可以轻松地查询异构数据源。
三种表现形式：复合查询、Lambda表达式以及混合查询。 & 1、查询集合数据方法依次为：
&& &var result=from n in dataList orderby&n.TimeWritten',
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${a.selfIntro|escape}{if great260}${suplement}{/if}
{list a as x}
推荐过这篇日志的人：
{list a as x}
{if !!b&&b.length>0}
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{list b as y}
转载记录：
{list d as x}
{list a as x}
{list a as x}
{list a as x}
{list a as x}
{if x_index>4}{break}{/if}
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{list wl as x}{/list}