SpeechRecognizer.EmulateRecognizeCompleted 事件

public:
 event EventHandler<System::Speech::Recognition::EmulateRecognizeCompletedEventArgs ^> ^ EmulateRecognizeCompleted;

public event EventHandler<System.Speech.Recognition.EmulateRecognizeCompletedEventArgs> EmulateRecognizeCompleted;

member this.EmulateRecognizeCompleted : EventHandler<System.Speech.Recognition.EmulateRecognizeCompletedEventArgs> 

Public Custom Event EmulateRecognizeCompleted As EventHandler(Of EmulateRecognizeCompletedEventArgs) 

Public Event EmulateRecognizeCompleted As EventHandler(Of EmulateRecognizeCompletedEventArgs) 

事件类型

示例

以下示例是控制台应用程序的一部分，该应用程序加载语音识别语法并演示异步模拟输入、关联的识别结果以及语音识别器引发的关联事件。 如果 Windows 语音识别未运行，则启动此应用程序也将启动 Windows 语音识别。 如果 Windows 语音识别处于 睡眠 模式，则 EmulateRecognizeAsync 始终返回 null。

using System;
using System.Speech.Recognition;
using System.Threading;

namespace SharedRecognizer
{
  class Program
  {
    // Indicate whether the asynchronous emulate recognition
    // operation has completed.
    static bool completed;

    static void Main(string[] args)
    {

      // Initialize an instance of the shared recognizer.
      using (SpeechRecognizer recognizer = new SpeechRecognizer())
      {
        // Create and load a sample grammar.
        Grammar testGrammar =
          new Grammar(new GrammarBuilder("testing testing"));
        testGrammar.Name = "Test Grammar";
        recognizer.LoadGrammar(testGrammar);

        // Attach event handlers for recognition events.
        recognizer.SpeechRecognized +=
          new EventHandler<SpeechRecognizedEventArgs>(SpeechRecognizedHandler);
        recognizer.EmulateRecognizeCompleted +=
          new EventHandler<EmulateRecognizeCompletedEventArgs>(
            EmulateRecognizeCompletedHandler);

        completed = false;

        // This EmulateRecognizeAsync call generates a SpeechRecognized event.
        recognizer.EmulateRecognizeAsync("testing testing");

        // Wait for the asynchronous operation to complete.
        while (!completed)
        {
          Thread.Sleep(333);
        }

        completed = false;

        // This EmulateRecognizeAsync call does not match the grammar
        // or generate a SpeechRecognized event.
        recognizer.EmulateRecognizeAsync("testing one two three");

        // Wait for the asynchronous operation to complete.
        while (!completed)
        {
          Thread.Sleep(333);
        }
      }

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

    // Handle the SpeechRecognized event.
    static void SpeechRecognizedHandler(
      object sender, SpeechRecognizedEventArgs e)
    {
      if (e.Result != null)
      {
        Console.WriteLine("Recognition result = {0}",
          e.Result.Text ?? "<no text>");
      }
      else
      {
        Console.WriteLine("No recognition result");
      }
    }

    // Handle the EmulateRecognizeCompleted event.
    static void EmulateRecognizeCompletedHandler(
      object sender, EmulateRecognizeCompletedEventArgs e)
    {
      if (e.Result == null)
      {
        Console.WriteLine("No result generated.");
      }

      // Indicate the asynchronous operation is complete.
      completed = true;
    }
  }
}

注解

每个方法都会 EmulateRecognizeAsync 开始异步识别操作。 识别器在 EmulateRecognizeCompleted 完成异步操作时引发 事件。

异步识别操作可以引发 SpeechDetected、、 SpeechHypothesizedSpeechRecognitionRejected和 SpeechRecognized 事件。 事件 EmulateRecognizeCompleted 是识别器为给定操作引发的最后一个此类事件。

为 EmulateRecognizeCompleted 事件创建委托时，需要标识将处理事件的方法。 若要将事件与事件处理程序关联，请将该委托的一个实例添加到事件中。 除非移除了该委托，否则每当发生该事件时就会调用事件处理程序。 有关事件处理程序委托的详细信息，请参阅 事件和委托。

另请参阅

• EmulateRecognizeCompletedEventArgs
• EmulateRecognizeAsync(String)
• SpeechDetected
• SpeechHypothesized
• SpeechRecognitionRejected
• SpeechRecognized