Here I need to get the total count of name Murugan my output should be "2" . How to write Linq Query for that
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();
尝试这个:
var count = names.Count(x=>x.Name=="Murugan");
You can use this,
var result = (from val in names
where val.Name == "Murugan"
select val).Count();
you can use this:
var result = from val in names
where val.Name == "Murugan"
group val by val.Name into g
select new { Count = g.Count()
};
try:
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();
var result = (from val in names
where val.Name == "Murugan"
select val).Count ();
linq returns IEnumerable which has Count ()
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