SemanticResultKey.ToGrammarBuilder 方法

定義

命名空間:

System.Speech.Recognition

組件:

System.Speech.dll

套件:

System.Speech v9.0.0-preview.4.24266.19

來源:

SemanticResultKey.cs

傳回從目前 GrammarBuilder 執行個體建構的 SemanticResultKey 執行個體。

public:
 System::Speech::Recognition::GrammarBuilder ^ ToGrammarBuilder();

public System.Speech.Recognition.GrammarBuilder ToGrammarBuilder ();

member this.ToGrammarBuilder : unit -> System.Speech.Recognition.GrammarBuilder

Public Function ToGrammarBuilder () As GrammarBuilder

傳回

GrammarBuilder

從目前 SemanticResultKey 執行個體建構的 GrammarBuilder 執行個體。

範例

下列範例會建立 一個 Grammar 物件，該物件支援變更背景色彩的命令。

物件 Choices (colorChoice) 包含背景色彩選項清單的物件會使用 Add(GrammarBuilder[]) 具有 實例的方法 GrammarBuilder 填滿。 實例 GrammarBuilder 是透過 ToGrammarBuilder() 從色彩字串建立之 物件的 方法 SemanticResultValue 取得。

GrammarBuilder接著，藉由在 實例上 SemanticResultKey 呼叫 ToGrammarBuilder() 來取得 ，這個實例會用來索引中的 colorChoice 語意選擇。

private Grammar CreateGrammarBuilderRGBSemantics()
{

  // Create a set of choices, each a lookup from a color name to RGB.
  // Choices constructors do not take SemanticResultValue parameters, so cast
  // the SemanticResultValue to GrammarBuilder.
  Choices colorChoice = new Choices();
  foreach (string colorName in System.Enum.GetNames(typeof(KnownColor)))
  {
    SemanticResultValue colorValue=new SemanticResultValue(colorName, Color.FromName(colorName).ToArgb());

    // Use implicit conversion of SemanticResultValue to GrammarBuilder.
    colorChoice.Add(colorValue.ToGrammarBuilder());
  }
  SemanticResultKey choiceKey = new SemanticResultKey("rgb", colorChoice);
  GrammarBuilder choiceBuilder = choiceKey.ToGrammarBuilder();

  // Create two intermediate grammars with introductory phrase and the color choice.
  GrammarBuilder makeBackgroundBuilder = "Make background";
  makeBackgroundBuilder.Append(choiceBuilder);

  GrammarBuilder configureBackgroundBuilder = new GrammarBuilder("Configure background as");
  configureBackgroundBuilder.Append((new SemanticResultKey("rgb", colorChoice)).ToGrammarBuilder());

  // Create the Grammar object, which recognizes either intermediate grammar.
  Grammar grammar = new Grammar(new Choices(new GrammarBuilder[] {makeBackgroundBuilder, configureBackgroundBuilder}));
  grammar.Name = "Make Background /Configure background as";

  return grammar;
}

備註

的用法 ToGrammarBuilder 相當於使用 GrammarBuilder 採用 作為引數的建構 SemanticResultKey 函式 (GrammarBuilder(SemanticResultKey)) 。