Query the data in the list using LINQ

View code

 1   //  1. query all the girls in the list, whose ages are less than 18, and sort them in descending order.  2   //  2. query the students whose names start with "Wang" and whose length is 3.  3   Using  System;  4   Using  System. Collections. Generic;  5   Using  System. LINQ; 6   Public   Class  Studylinq  7   {  8       Public   Static   Void  Main ()  9   {  10 List <people> List = New List <people> (); 11 List. Add ( New People () {name = "  Kangxi  " , Age = 18 , Sex = "  Male  "  });  12 List. Add ( New People () {name = "  Yongzheng  " , Age =20 , Sex = "  Male  "  });  13 List. Add ( New People () {name = "  Qianlong District  " , Age = 18 , Sex = "  Male  "  });  14 List. Add ( New People () {name = "  Wang Xiaozhi  " , Age = 23 , Sex = "  Male  "  });  15 List. Add ( New People () {name = "  Wu Zetian  " , Age = 17 , Sex = "  Female  "  });  16 List. Add ( New People () {name = "  Cixi  " , Age = 16 , Sex = "  Female  "  });  17           VaR Result = List. Where (P => P. age < 18 & P. Sex = "  Female  " ). Orderbydescending (P => P. Age );  18               Foreach (PEOPLE In  Result)  19   {  20 Console. writeline (A. Name + "    " +A. Age );  21   }  22           VaR Result1 = List. Where (P => P. Name. startswith ( "  Wang  " ) & P. Name. Length = 3  );  23               Foreach (PEOPLE B In  Result1)  24  {  25   Console. writeline (B. Name );  26   }  27   }  28       Public   Class  People  29   {  30           Public   String  Name 31   {  32               Get ; Set  ;  33   }  34           Public   Int  Age  35   {  36               Get ; Set ;  37   }  38           Public   String  Sex  39   {  40               Get ; Set  ;  41   }  42   } 43 }