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szabomarton 2024-09-11 12:53:39 +02:00
parent c59f7fe309
commit b62deda57c
12 changed files with 51 additions and 11 deletions
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20240911/ConsoleApp1/ConsoleApp1/Program.cs
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@ -13,16 +13,42 @@ namespace ConsoleApp1
public int X { get; set; }
public int Y { get; set; }
}
struct Betuk
{
public char X { get; set; }
public char Y { get; set; }
}
static void Main(string[] args)
{
//Pelda1();
Pelda2();
//Pelda2();
Pelda3();
Console.ReadLine();
}
static void Pelda3()
{
var elemek = new List<Betuk>
{
new Betuk { X = 'x', Y = 'c' },
new Betuk { X = 'b', Y = 'c' },
new Betuk { X = 'h', Y = 'c' },
new Betuk { X = 'g', Y = 'c' },
};
var eredmeny = from elem in elemek orderby elem.X ascending select elem.X;
foreach (var item in eredmeny)
{
Console.WriteLine(item);
}
}
static void Pelda2()
{
var elemek = new List<Koordinatak>

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linq_anyag
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@ -10,4 +10,11 @@ A linq szintaxisai:
select elem.x;
A sql utasítások közül a group by is használható.
Mint látható a rendezést az orderby kulcsszó valósítja meg,
amit a tulajdonság neve követ, ami alapján rendezni akarunk.
Ezután vagy az ascending, vagy a descending kulcsszónak kell következnie attól függően, hogy növekvő, vagy csökkenő sorrendben szeretnénk az adatokat kiírni. A lambda szintaxis esetén az OrderBy és az OrderByDescendinget alkalmazzuk.
Csoportosítás (good bye)