数据的初始化和LINQ学习笔记

LINQ是做数据查询的

　　

{
public static void Main (string[] args)
{
var masterList = new List<MartlalArtsMaster> ()
{
new MartlalArtsMaster(){Id = 1,Name = "黄蓉",Age = 18,Menpai = "丐帮",Kongfu = "打狗棒法",Level = 9},
new MartlalArtsMaster(){Id = 2,Name = "洪七公",Age = 70,Menpai ="丐帮",Kongfu= "打狗棒法",Level =10},
new MartlalArtsMaster(){Id = 3,Name = "郭靖",Age = 26,Menpai = "丐帮",Kongfu = "降龙十八掌",Level = 10},
new MartlalArtsMaster(){Id = 4,Name = "任我行",Age = 50,Menpai = "明教",Kongfu = "葵花宝典",Level = 1},
new MartlalArtsMaster(){Id = 5,Name = "东方不败",Age = 35,Menpai = "明教",Kongfu = "葵花宝典",Level = 10},
new MartlalArtsMaster(){Id = 6,Name = "林平之",Age = 23,Menpai = "华山",Kongfu = "葵花宝典",Level = 7},
new MartlalArtsMaster(){Id = 7,Name = "岳不群",Age = 50,Menpai = "华山",Kongfu = "葵花宝典",Level = 8},
new MartlalArtsMaster(){Id = 8,Name = "令狐冲",Age = 30,Menpai = "华山",Kongfu = "独孤九剑",Level = 10},
new MartlalArtsMaster(){Id = 9,Name = "梅超风",Age = 23,Menpai = "桃花岛",Kongfu = "九阳真经",Level = 8},
new MartlalArtsMaster(){Id = 10,Name = "黄药师",Age = 23,Menpai = "梅花岛",Kongfu = "弹指神功",Level = 10},
new MartlalArtsMaster(){Id = 11,Name = "风清扬",Age = 23,Menpai = "华山",Kongfu = "独孤九剑",Level = 10}
};

var kongfu = new List<Kongfu> ()
{
new Kongfu(){Id = 1,Name = "打狗棒法",Power = 90},
new Kongfu(){Id = 2,Name = "降龙十八掌",Power = 95},
new Kongfu(){Id = 3,Name = "葵花宝典",Power = 100},
new Kongfu(){Id = 4,Name = "独孤九剑",Power = 100},
new Kongfu(){Id = 5,Name = "九阴真经",Power = 100},
new Kongfu(){Id = 6,Name = "弹指神功",Power = 100}
};

//查询所有级别大于8的
// var res = new List<MartlalArtsMaster>();
// foreach (var temp in masterList)
// {
// if (temp.Level>8)
// {
// res.Add (temp);
//
// }
//// }
// var res = from m in masterList //从masterLIst中去观察元素名称叫做m的集合res
// where m.Level > 8&&m.Menpai=="丐帮" //表示选择的限制条件
// select m; //表示条件的返回值为m
var res = masterList.Where(m=>m.Level>8&&m.Menpai=="丐帮"); //正则表达式优化扩展以后的写法

foreach (var temp in res)
{
Console.WriteLine (temp);
}

Console.ReadKey ();
}
}