private Trie game_dictionary = new Trie();
private bool loading_dictionary = true;
private void GenerateDictionary(object path)
{
    var uri = new Uri(path.ToString());
    var resourceStream = Application.GetResourceStream(uri);
    using (StreamReader sr = new StreamReader(resourceStream.Stream))
    {
        while (sr.Peek() >= 0)
        {
            string word = sr.ReadLine(); //only one word per line in PolishDictionary
            if (game_dictionary.AcceptableWord(word)) game_dictionary.AddWord(word);
        }
    }
    using (var fs = new System.IO.FileStream("dict.dat", FileMode.CreateNew, FileAccess.Write))
    {
        var bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
        bf.Serialize(fs, game_dictionary);
           }
    loading_dictionary = false;
}