// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002415/int32-notin

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        Int32 searchVal = 1277;

        Int32[] values = { 32767, 235, 0, -1277, -32767 };

​

        // C# Extension Method: Int32 - NotIn

        if(searchVal.NotIn(values))

        {

            Console.WriteLine("{0} doesn't exists in the list.", searchVal);

        }

        else

        {

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

        }

    }

}