Too many grammars in Microsoft Speech SDK 11

Question

Good day!
I write simple speech recognition app wich can load grammars into engine.
But i see,that can not load many grammars into engine- not more then 1024 grammars.
Additional information: Too many grammars have been loaded. Number of grammars cannot exceed 1024.
And when i load 1024 grammars- it does not recognize input stream *wav (and my soeech) file:
Thread.CurrentThread.CurrentCulture = new CultureInfo("ru-RU");
Thread.CurrentThread.CurrentUICulture = new CultureInfo("ru-RU");
// Create a new SpeechRecognitionEngine instance.
_sre = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("ru-RU"));
_sre.SpeechHypothesized += _sre_SpeechHypothesized;
_sre.SpeechDetected += _sre_SpeechDetected;
_sre.SetInputToWaveFile(@"c:\Test\Wavs\Wavs-converted\file.wav");
public void LoadGrammarIntoEngine(IEnumerable<String> textColl)
Choices choises = new Choices();
GrammarBuilder gb = new GrammarBuilder();
gb.Culture = new CultureInfo("ru-RU");
if (choises != null && textColl != null)
choises.Add(textColl.ToArray());
if (gb != null)
gb.Append(choises);
else
Console.WriteLine();
if (_sre.Grammars.Count < 1024)
Grammar g = new Grammar(gb);
if (_sre != null && g != null)
_sre.LoadGrammar(g);
else
Console.WriteLine();
else
Console.WriteLine("too many grammars");
Can you help me? Thank you!
P.S. when i load 5-10 grammars (100 words each)- it works well.
May be i can\should use more then one recognition engine together?

Answer 1

Why so many grammars at once?  You can unload grammars and load new ones based on the phase of your application (IVR?).