static void Main(string[] args)
        {
            string filePath = @"e:\test\abc.jpg";
            Console.WriteLine(Path.GetFullPath(filePath)); //--> E:\test\abc.jpg
            Console.WriteLine(Path.GetDirectoryName(filePath)); //--> E:\test
            Console.WriteLine(Path.GetFileName(filePath)); //--> abc.jpg
            Console.WriteLine(Path.GetFileNameWithoutExtension(filePath)); //--> abc
            Console.WriteLine(Path.GetExtension(filePath)); //--> .jpg
            Console.WriteLine(Path.GetPathRoot(filePath)); //--> E:\
            Thread.Sleep(3000);
        }