// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002266/datetime-lastdayofweek

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        DateTime now = DateTime.Now;

        Console.WriteLine("Current Date    : {0}", now.ToFullDateTimeString());

        // C# Extension Method: DateTime - LastDayOfWeek

        DateTime lastDayOfWeek = now.LastDayOfWeek();

        Console.WriteLine("Last day of week: {0}", lastDayOfWeek.ToFullDateTimeString());

    }

}