using System;

using System.IO;

public class Program

{

    static void Main(string[] args)

        {

            Console.WriteLine(AreEqual(

                new DirectoryInfo("C:\\Scratch"),

                new DirectoryInfo("C:\\Scratch\\")));

​

            Console.WriteLine(AreEqual(

                new DirectoryInfo("C:\\Windows\\Microsoft.NET\\Framework"),

                new DirectoryInfo("C:\\Windows\\Microsoft.NET\\Framework\\v3.5\\1033\\..\\..")));

​

            Console.WriteLine(AreEqual(

                new DirectoryInfo("C:\\Scratch\\"),

                new DirectoryInfo("C:\\Scratch\\4760\\..\\..")));

​

            Console.WriteLine(AreEqual(@"C:/Temp", @"C:\Temp2")); // False

            Console.WriteLine(AreEqual(@"C:\Temp\", @"C:\Temp2"));// False

            Console.WriteLine(AreEqual(@"C:\Temp\", @"C:\Temp")); // True

            Console.WriteLine(AreEqual(@"C:\Temp/", @"C:\Temp")); // True

            Console.WriteLine(AreEqual(@"C:/Temp/", @"C:\Temp\"));// True

​

            Console.WriteLine("Press ENTER to continue");

            Console.ReadLine();

        }

     private static bool AreEqual(DirectoryInfo dir1, DirectoryInfo dir2)

        {

            return AreEqual(dir1.FullName, dir2.FullName);

        }

​

        private static bool AreEqual(string folderPath1, string folderPath2)

        {

            folderPath1 = Path.GetFullPath(folderPath1);

            folderPath2 = Path.GetFullPath(folderPath2);

​

            if (folderPath1.Length == folderPath2.Length)

            {

                return string.Equals(folderPath1, folderPath2/*, StringComparison.OrdinalIgnoreCase*/);

            }

            else if (folderPath1.Length == folderPath2.Length + 1 && IsEndWithAltDirectorySeparatorChar(folderPath1))

            {

                // folderPath1 = @"F:\temp\"

                // folderPath2 = @"F:\temp"

                return folderPath1.Contains(folderPath2 /*, StringComparison.OrdinalIgnoreCase*/);

            }

            else if (folderPath1.Length + 1 == folderPath2.Length && IsEndWithAltDirectorySeparatorChar(folderPath2))

            {

                // folderPath1 = @"F:\temp"

                // folderPath2 = @"F:\temp\"

                return folderPath2.Contains(folderPath1 /*, StringComparison.OrdinalIgnoreCase*/);

            }

​

            return false;

​

            static bool IsEndWithAltDirectorySeparatorChar(string path)

            {

                var lastChar = path[path.Length - 1];

                return lastChar == Path.DirectorySeparatorChar;

            }

        }

}