Path

using System;//from j a  v a 2 s.co  m
using System.IO;
using System.Linq;
using System.Text;

class Program
{
    static void Main()
    {
        string dir = @"c:\g";
        string file = "myfile.txt";
        string path = @"c:\g\myfile.txt";

        Directory.SetCurrentDirectory(@"k:\demo");
        Directory.GetCurrentDirectory();
        Path.IsPathRooted(file);
        Path.IsPathRooted(path);
        Path.GetPathRoot(path);
        Path.GetDirectoryName(path);
        Path.GetFileName(path);
        Path.GetFullPath(file);
        Path.Combine(dir, file);
        Console.WriteLine(Path.GetTempFileName());
        Console.WriteLine(Path.GetTempPath());
    }
}