How I Do Convert A Sql Table To Grammer In C# Recognition ?

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how i do convert a sqlserver table to grammar in C# recognition ?
for example:

C#

var db = new DataClasses1DataContext();
        var word = from c in db.Englishes select c;
                   comboBox1.DataSource = word;
         comboBox1.DisplayMember = "English_Word";
           comboBox1.ValueMember = "English_Word";

           string[]  conv=new string[100000];

           for (int a = 0; a < comboBox1.Items.Count; a++)  conv[a] = comboBox1.Items[a].ToString();
           Choices comands = new Choices();
           comands.Add(conv);
           GrammarBuilder gbuilder = new GrammarBuilder();
           gbuilder.Append(comands);
           Grammar grammar = new Grammar(gbuilder);

           recEngine.LoadGrammarAsync(grammar);
           recEngine.SetInputToDefaultAudioDevice();
           recEngine.RecognizeAsync(RecognizeMode.Multiple); //Error here

is error in

recEngine.RecognizeAsync(RecognizeMode.Multiple);

( {"At least one grammar must be loaded before doing a recognition."} ) is error

please help me thank you

Posted 26-Aug-15 3:57am

Member 11785200

Updated 26-Aug-15 4:14am

Andy Lanng

v2

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Sergey Alexandrovich Kryukov 26-Aug-15 10:30am

Where is your declaration of recEngine? What is your thread apartment model?
—SA

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Thomas Daniels · Answer 1 · 2015-08-26T04:12:00

You are loading the Grammar asynchronously, so it might happen that it isn't fully loaded yet when you start recognizing.

There are two options to avoid that:

Load the grammar synchronously, using LoadGrammar instead of LoadGrammarAsync.

If you load it async, only start the recognizer once the loading is complete. Add a LoadGrammarCompleted event handler which starts the recognizer:

C#

recEngine.LoadGrammarCompleted += delegate(EventHandler<LoadGrammarCompletedEventArgs> e)
{
    recEngine.SetInputToDefaultAudioDevice();
    recEngine.RecognizeAsync(RecognizeMode.Multiple);
};
recEngine.LoadGrammarAsync(grammar);