SemanticValue.Count 屬性

定義

命名空間:

System.Speech.Recognition

組件:

System.Speech.dll

套件:

System.Speech v11.0.0-preview.7.26381.103

來源:

SemanticValue.cs

回傳目前SemanticValue實例下的子SemanticValue物件數量。

public:
 property int Count { int get(); };

public int Count { get; }

member this.Count : int

Public ReadOnly Property Count As Integer

屬性值

Int32

SemanticValue目前 SemanticValue.

實作

Count

範例

以下範例展示了一個處理事件處理程序的處理器 SpeechRecognized ，該事件旨在處理改變前景與背景顏色的指令。

處理者透過偵測 a Count 為零且 a Value 為 null，來識別無底層語意結構的片語。 接著，藉由剖析原始文字，即可直接處理此辨識輸出。

在其他情況下，處理程式會使用索引鍵來取得色彩名稱的 RGB 元件、判斷命令是否會變更前景或背景，或指出找不到有效的索引鍵。

newGrammar.SpeechRecognized +=
  delegate(object sender, SpeechRecognizedEventArgs eventArgs)
  {

    // Retrieve the value of the semantic property.
    bool changeBackGround = true;
    string errorString = "";
    SemanticValue semantics = eventArgs.Result.Semantics;

    Color newColor = Color.Empty;

    try
    {
      if (semantics.Count == 0 && semantics.Value==null)
      {
        // Signifies recognition by a grammar with no semantics.
        // Parse the string, assuming that the last word is color,
        //  searching for background or foreground in input.
        if (eventArgs.Result.Text.Contains("foreground"))
        {
          changeBackGround = false;
        }
        string cName = eventArgs.Result.Words[eventArgs.Result.Words.Count - 1].Text;
        newColor = Color.FromName(cName);

      }
      else if (semantics.ContainsKey("colorStringList") ^ semantics.ContainsKey("colorRGBValueList"))
      {

        // Determine whether to change background or foreground.
        if (semantics.ContainsKey("applyChgToBackground"))
        {
          changeBackGround = semantics["applyChgToBackground"].Value is bool;
        }

        // Get the RGB color value.
        if (semantics.ContainsKey("colorStringList"))
        {
          newColor = Color.FromName((string)semantics["colorStringList"].Value);
        }
        if (semantics.ContainsKey("colorRGBValueList"))
        {
          newColor = System.Drawing.Color.FromArgb((int)semantics["colorRGBValueList"].Value);
        }
      }
      else
      {

        // Throw an exception if the semantics do not contain the keys we
        // support.
        throw(new Exception("Unsupported semantics keys found."));
      }
    }

    catch (Exception exp)
    {
      MessageBox.Show(String.Format("Unable to process color semantics.:\n{0}\n", exp.Message));
      return;
    }

    // Change colors, either foreground or background.
    if (changeBackGround)
    {
      BackColor = newColor;
      float Bright = BackColor.GetBrightness();
      float Hue = BackColor.GetHue();
      float Sat = BackColor.GetSaturation();
      // Make sure that text is readable regardless of background.
      if (BackColor.GetBrightness() <= .50)
      {
        ForeColor = Color.White;
      }
      else
      {
        ForeColor = Color.Black;
      }
    }
    else
    {
      ForeColor = newColor;
      float Bright = ForeColor.GetBrightness();
      float Hue = ForeColor.GetHue();
      float Sat = ForeColor.GetSaturation();

      // Make sure that text is readable regardless of Foreground.
      if (ForeColor.GetBrightness() <= .50)
      {
        BackColor = Color.White;
      }
      else
      {
        BackColor = Color.Black;
      }
    }
    return;
  };

備註

未使用語意解析的識別結果總是值Count為零，且 值Valuenull為 。