// C# Extension Method

// Doc: [url will be determined later]

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var list = new List<string> {"zA", "zB", "C"};

​

        // C# Extension Method: ICollection<T> - ContainsAll

        bool value1 = list.ContainsAll("zA", "zB"); // return true;

        bool value2 = list.ContainsAll("zA", "2"); // return false;

​

        Console.WriteLine(value1);

        Console.WriteLine(value2);

    }

}