using System;

using System.IO;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Environment.OSVersion.ToString());

        Console.WriteLine(Path.DirectorySeparatorChar);

        Console.WriteLine(Path.AltDirectorySeparatorChar);

​

        var windowsPath = @"C:\__w\1\s\src\Manager\ScanResourceCleaner.cs";

        Console.WriteLine(Path.GetFileNameWithoutExtension(windowsPath));

        Console.WriteLine(GetFileNameWithoutExtension(windowsPath));

    }

    private static string GetFileNameWithoutExtension(string filePath)

    {

        int start = filePath.LastIndexOfAny(new[] { '/', '\\' });

        if (start == -1)

            return filePath;

​

        int end = filePath.LastIndexOfAny(new[] { '.' });

        if (end == -1)

            end = filePath.Length;

​

        string fileName = filePath.Substring(start + 1, end - start - 1);

        return fileName;

    }

}

​

​