SpeechRecognitionEngine.UnloadAllGrammars Método

public:
 void UnloadAllGrammars();

public void UnloadAllGrammars();

member this.UnloadAllGrammars : unit -> unit

Public Sub UnloadAllGrammars ()

Exemplos

O exemplo a seguir mostra parte de um aplicativo de console que demonstra o carregamento e o descarregamento síncronos de gramáticas de reconhecimento de fala.

Loading grammars...
Loaded grammars:
 - Grammar1
 - Grammar2
 - Grammar3

Unloading Grammar1...
Loaded grammars:
 - Grammar2
 - Grammar3

Unloading all grammars...
No grammars loaded.

Press any key to exit...

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Speech.Recognition;

namespace UnloadGrammars
{
  class Program
  {
    static void Main(string[] args)
    {
      using (SpeechRecognitionEngine recognizer =
        new SpeechRecognitionEngine(new CultureInfo("en-US")))
      {
        Console.WriteLine("Loading grammars...");

        // Create and load a number of grammars.
        Grammar grammar1 = new Grammar(new GrammarBuilder("first grammar"));
        grammar1.Name = "Grammar1";
        recognizer.LoadGrammar(grammar1);

        Grammar grammar2 = new Grammar(new GrammarBuilder("second grammar"));
        grammar2.Name = "Grammar2";
        recognizer.LoadGrammar(grammar2);

        Grammar grammar3 = new Grammar(new GrammarBuilder("third grammar"));
        grammar3.Name = "Grammar3";
        recognizer.LoadGrammar(grammar3);

        // List the recognizer's loaded grammars.
        ListGrammars(recognizer);

        // Unload one grammar and list the loaded grammars.
        Console.WriteLine("Unloading Grammar1...");
        recognizer.UnloadGrammar(grammar1);
        ListGrammars(recognizer);

        // Unload all grammars and list the loaded grammars.
        Console.WriteLine("Unloading all grammars...");
        recognizer.UnloadAllGrammars();
        ListGrammars(recognizer);
      }

      Console.WriteLine("Press any key to exit...");
      Console.ReadKey();
    }

    private static void ListGrammars(SpeechRecognitionEngine recognizer)
    {
      // Make a copy of the recognizer's grammar collection.
      List<Grammar> loadedGrammars = new List<Grammar>(recognizer.Grammars);

      if (loadedGrammars.Count > 0)
      {
        Console.WriteLine("Loaded grammars:");
        foreach (Grammar g in recognizer.Grammars)
        {
          Console.WriteLine(" - {0}", g.Name);
        }
      }
      else
      {
        Console.WriteLine("No grammars loaded.");
      }
      Console.WriteLine();
    }
  }
}

Comentários

Se o reconhecedor estiver carregando de Grammar forma assíncrona, esse método aguardará até que ele Grammar seja carregado, antes de descarregar todos os Grammar objetos da SpeechRecognitionEngine instância.

Para descarregar uma gramática específica, use o UnloadGrammar método.

Confira também

• LoadGrammar(Grammar)
• LoadGrammarAsync(Grammar)
• UnloadGrammar(Grammar)