public static Dictionary<string, string> HashDict(string hashdir)
    {

        Dictionary<string, string> TempDict = new Dictionary<string, string>();

        DirectoryInfo dir = new DirectoryInfo(hashdir);
        FileInfo[] files = dir.GetFiles();
        SHA256 mySHA256 = SHA256Managed.Create();
        byte[] hashValue;

        foreach (FileInfo fInfo in files)
        {
            FileStream fileStream = fInfo.Open(FileMode.Open);
            fileStream.Position = 0;
            hashValue = mySHA256.ComputeHash(fileStream);
            HashLine(hashValue);
            TempDict.Add(fInfo.FullName, HashLine(hashValue));
            fileStream.Close();

            foreach (string k in TempDict.Keys)
            {
                Console.WriteLine("{0}: {1}\n", k, TempDict[k]);
            }
        }
        return TempDict;
    }