// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002237/datetime-torfc1123string

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        DateTime date = DateTime.Now;

​

        // C# Extension Method: DateTime - ToRFC1123String

        Console.WriteLine("{0, 10} Culture {1, 40}", "Current", date.ToRFC1123String());

        // C# Extension Method: DateTime - ToRFC1123String

        Console.WriteLine("{0, 10} Culture {1, 40}", "fr-FR", date.ToRFC1123String("fr-FR"));

        var culture = CultureInfo.CreateSpecificCulture("es-ES");

        // C# Extension Method: DateTime - ToRFC1123String

        Console.WriteLine("{0, 10} Culture {1, 40}", culture, date.ToRFC1123String(culture));

    }

}