File Stream C#

using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
namespace PeDALS.Utilities
{
    public class FileHelper
    {
        public static string GetFileNameFromPath(string path)
        {
            string[] temp;
            temp = path.Split('/');
            return temp[temp.Length - 1].ToString();
        }
        public static string GetPathFromFileName(string path)
        {
            string fullPath="";
            string[] temp;
            temp = path.Split('\\');
            for (int i = 0; i < temp.Length - 1; i++)
            {
                if (i == 0)
                    fullPath = temp[i].ToString();
                else
                    fullPath = fullPath + "\\" + temp[i].ToString();
            }
            return fullPath;
        }
    }
}