using System.Windows.Forms;
using System.Speech.Recognition;//包
using System.Speech;

namespace VoiceControl
{
    public partial class Form1 : Form
    {
        private SpeechRecognitionEngine SRE = new SpeechRecognitionEngine();

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            SRE.SetInputToDefaultAudioDevice();
            GrammarBuilder GB = new GrammarBuilder();
            GB.Append("选择");
            GB.Append(new Choices(new string[] { "红色", "绿色" }));
            Grammar G = new Grammar(GB);
            G.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(G_SpeechRecognized);
            SRE.LoadGrammar(G);
            SRE.RecognizeAsync(RecognizeMode.Multiple);
        }
        void G_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            if (e.Result.Text.Equals("选择红色"))
            {
                BackColor = Color.Red;
            }
            else if (e.Result.Text.Equals("选择绿色"))
            {
                BackColor = Color.Green;
            }
        }
    }
}