ASP.NET & Csharp (C#)

ASP.NET & Csharp (C#) , Here you can find my posts about .NET c# .

use Single

Posted on by coder 
   
 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;

public class MainClass{
   public static void Main(){
            int[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9};
            var query = numbers.Single(n => n > 8);
            Console.Write(query);
   }
}

SequenceEqual Operator with Take and Count

Posted on by coder 
   
 

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

public class MainClass {
    public static void Main() {
        string[] presidents = {"G", "H", "a", "H", "over", "Jack"};

        bool eq = presidents.SequenceEqual(presidents.Take(presidents.Count()));
        Console.WriteLine(eq);

    }
}

SequenceEqual Operator with string array

Posted on by coder 
   
 

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
public class MyStringifiedNumberComparer : IEqualityComparer<string> {
    public bool Equals(string x, string y) {
        return (Int32.Parse(x) == Int32.Parse(y));
    }

    public int GetHashCode(string obj) {
        return Int32.Parse(obj).ToString().GetHashCode();
    }
}
public class MainClass {
    public static void Main() {
        string[] stringifiedNums1 = { "101", "49", "017", "1080", "00027", "2" };
        string[] stringifiedNums2 = {"1", "1049", "17", "080", "27", "02" };
        bool eq = stringifiedNums1.SequenceEqual(stringifiedNums2,new MyStringifiedNumberComparer());
        Console.WriteLine(eq);
    }
}

SequenceEqual Operator

Posted on by coder 
   
 

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

public class MainClass {
    public static void Main() {
        string[] presidents = {"G", "H", "a", "H", "over", "Jack"};

        bool eq = presidents.SequenceEqual(presidents);
        Console.WriteLine(eq);

    }
}

SelectMany Prototype: with ? operator

Posted on by coder

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
public class MainClass {
public static void Main() {
string[] presidents = {“A”, “Art”, “Buch”, “Bush”, “Carter”, “land”};

IEnumerable chars = presidents
.SelectMany((p, i) => i < 5 ? p.ToArray() : new char[] { }); foreach (char ch in chars) Console.WriteLine(ch); } } [/csharp]

SelectMany Prototype

Posted on by coder 
   
 

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
public class MainClass {
    public static void Main() {
        string[] presidents = {"Ad", "Art", "Buch", "Bush", "Car", "land"};

        IEnumerable<char> chars = presidents.SelectMany(p => p.ToArray());

        foreach (char ch in chars)
            Console.WriteLine(ch);

    }
}