SpeechRecognitionEngine.UnloadGrammar(Grammar) Methode

public:
 void UnloadGrammar(System::Speech::Recognition::Grammar ^ grammar);

public void UnloadGrammar (System.Speech.Recognition.Grammar grammar);

member this.UnloadGrammar : System.Speech.Recognition.Grammar -> unit

Public Sub UnloadGrammar (grammar As Grammar)

Parameter

Ausnahmen

Beispiele

Das folgende Beispiel zeigt einen Teil einer Konsolenanwendung, der das synchrone Laden und Entladen von Spracherkennungsgrammatiken veranschaulicht.

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();  
    }  
  }  
}  

Hinweise

Wenn die Erkennung ausgeführt wird, müssen Anwendungen verwenden RequestRecognizerUpdate , um die SpeechRecognitionEngine Instanz vor dem Laden, Entladen, Aktivieren oder Deaktivieren eines Grammar Objekts anzuhalten. Verwenden Sie die UnloadAllGrammars -Methode, um alle Grammar Objekte zu entladen.

Gilt für:

Weitere Informationen

• LoadGrammar(Grammar)
• LoadGrammarAsync(Grammar)
• UnloadAllGrammars()