Note
Please see Azure Cognitive Services for Speech documentation for the latest supported speech solutions.
GrammarBuilder.Add Method (String, GrammarBuilder)
Creates a new GrammarBuilder that contains a phrase followed by a GrammarBuilder object.
Namespace: Microsoft.Speech.Recognition
Assembly: Microsoft.Speech (in Microsoft.Speech.dll)
Syntax
'Declaration
Public Shared Function Add ( _
phrase As String, _
builder As GrammarBuilder _
) As GrammarBuilder
'Usage
Dim phrase As String
Dim builder As GrammarBuilder
Dim returnValue As GrammarBuilder
returnValue = GrammarBuilder.Add(phrase, builder)
public static GrammarBuilder Add(
string phrase,
GrammarBuilder builder
)
Parameters
- phrase
Type: System.String
The first grammar element, which represents a sequence of words.
- builder
Type: Microsoft.Speech.Recognition.GrammarBuilder
The second grammar element.
Return Value
Type: Microsoft.Speech.Recognition.GrammarBuilder
A GrammarBuilder for the sequence of the phrase element followed by the builder element.
Remarks
GrammarBuilder supports implicit conversions from the following classes:
This method accepts the objects listed above for the builder parameter.
For more information, see the Implicit and Addition operators.
Examples
The following example creates a speech recognition grammar that can recognize the two phrases, "Make background color" and "Set background to color", where color is selected from a set of colors. Various types are used to build the final grammar, such as String, Choices, and GrammarBuilder objects. The explicit cast operators in the calls to the Add methods are optional.
private Grammar CreateColorGrammar()
{
// Create a set of color choices.
Choices colorChoice = new Choices(new string[] {"red", "green", "blue"});
// Create grammar builders for the two versions of the phrase.
GrammarBuilder makePhrase =
GrammarBuilder.Add((GrammarBuilder)"Make background", colorChoice);
GrammarBuilder setPhrase =
GrammarBuilder.Add("Set background to", (GrammarBuilder)colorChoice);
// Create a Choices for the two alternative phrases, convert the Choices
// to a GrammarBuilder, and construct the grammar from the result.
Choices bothChoices = new Choices(new GrammarBuilder[] {makePhrase, setPhrase});
GrammarBuilder bothPhrases = new GrammarBuilder(bothChoices);
Grammar grammar = new Grammar(bothPhrases);
grammar.Name = "backgroundColor";
return grammar;
}