要寫一個linq查詢來獲得選定的名字計數

Question

在這裏我需要得到名字Murugan的總數，我的輸出應該是「2」。如何編寫LINQ查詢該

的Linq：

Person[] names = {new Person { Name = "Murugan", Money = 15000 }, 
           new Person{Name="Vel",Money=17000}, 
           new Person{Name="Murugan",Money=1000}, 
            new Person{Name="Subramani",Money=18000}, 
           new Person{Name="Vel",Money=2500}}; 
var result = from val in names 
     where val.Name == "Murugan" 
     select val; 
Console.WriteLine(result); 
Console.ReadLine(); 

Answer 1

試試這個：

var count = names.Count(x=>x.Name=="Murugan"); 

Answer 2

您可以使用此，

var result = (from val in names 
          where val.Name == "Murugan" 
          select val).Count(); 

Answer 3

嘗試：

Person[] names = { new Person { Name = "Murugan", Money = 15000 }, 
        new Person{Name="Vel",Money=17000}, 
        new Person{Name="Murugan",Money=1000}, 
        new Person{Name="Subramani",Money=18000}, 
        new Person{Name="Vel",Money=2500} }; 

var result = (from val in names 
       where val.Name == "Murugan" 
       select val).ToList(); 

Console.WriteLine(result.Count); 
Console.ReadLine(); 

Answer 4

var result = (from val in names 
         where val.Name == "Murugan" 
         select val).Count(); 

LINQ返回的IEnumerable具有計數（）

Answer 5

您可以使用此：

var result = from val in names 
       where val.Name == "Murugan" 
       group val by val.Name into g 
       select new { Count = g.Count()     
       };