4.1: Listing directories and using wildcards.

Program.cs

using System;
using System.IO;

namespace ImplementDataAccess._41_PerformIoOperations
{
    class Program
    {
        static void Main(string[] args)
        {
            var myDirectory = @"../../Directory";

            var myDirectoryInfo = new DirectoryInfo(myDirectory);
            Console.WriteLine($"Sub-directories for: {myDirectoryInfo.Name}:");

            foreach (var subDirectoryInfo in myDirectoryInfo.GetDirectories()) {
                Console.WriteLine($"- {subDirectoryInfo.FullName}");
            }

            var directoriesContainingMore = myDirectoryInfo.GetDirectories("*more*");

            Console.WriteLine("Directories containing 'more' word:");

            foreach (var subDirectoryInfo in directoriesContainingMore)
            {
                Console.WriteLine($"- {subDirectoryInfo.FullName}");
            }

            Console.Read();
        }
    }
}