using System;

public class Program

{

    public static void Main()

    {

        String test = "Hello World";

        Console.WriteLine(test.Left5566(5));

    }

}

​

​

// http://extensionmethod.net/2022/csharp/string/string-extensions

​

public static class Helper

{

    public static string Left5566(this string value, int length)

    {

        return value != null && value.Length > length ? value.Substring(0, length) : value;

    }

}