// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002570/object-in

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        int searchVal = -1277;

​

        // C# Extension Method: Object - In

        Display(searchVal, searchVal.In(32767, 235, 0, -1277, -32767));

        Display(searchVal, searchVal.In(32767, 235, 0, -1278, -32767));

    }

    public static void Display(object searchVal, bool status)

    {

        if(status)

        {

            Console.WriteLine("{0} is in the list.", searchVal);

        }

        else

        {

            Console.WriteLine("{0} is not in the list.", searchVal);

        }

    }

}