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C#用windows 7自带SAPI语音识别和阅读的写法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Speech.Synthesis;
using System.Speech.Recognition;

namespace spspsps
{
    public partial class sound : Form
    {

        SpeechSynthesizer synth = new SpeechSynthesizer();

        public sound()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.textBox1.Text = "test speech";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.button1.Enabled = false;

            //获取本机上所安装的所有的Voice的名称
            string voicestring = "";

            foreach (InstalledVoice iv in synth.GetInstalledVoices())
            {
                voicestring += iv.VoiceInfo.Name + ",";
            }

            //调节音量和语速
            synth.Volume = 100;
            synth.Rate = 1;

            //根据Voice的name属性确定要使用的Voice
            // synth.SelectVoice("Microsoft Anna");
            synth.SelectVoice("Microsoft Simplified Chinese");
            //根据文字内容合成语音
            synth.Speak(textBox1.Text);
            this.button1.Enabled = true;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (button2.Text == "语音识别")
            {
                textBox1.Text = "";
                button2.Text = "识别停止";
                //创建语音识别类
                SpRecognition x = new SpRecognition();
                x.BeginRec(textBox1);
            }
            else
            {
                button2.Text = "语音识别";
                //创建语音识别类
                SpRecognition x = new SpRecognition();
                x.EndRec();
            }


        }

        public class SpRecognition
        {
            //private static SpRecognition _Instance = null;
            private SpeechLib.ISpeechRecoGrammar isrg;
            private SpeechLib.SpSharedRecoContextClass ssrContex = null;
            //定义显示控件
            private System.Windows.Forms.Control textBox1;
            public SpRecognition()
            {
                ssrContex = new SpSharedRecoContextClass();
                isrg = ssrContex.CreateGrammar(1);

                //创建监视事件recHandle并随时将结果给ContexRecognition
                SpeechLib._ISpeechRecoContextEvents_RecognitionEventHandler recHandle =
                    new _ISpeechRecoContextEvents_RecognitionEventHandler(ContexRecognition);

                ssrContex.Recognition += recHandle;
            }

            //显示识别结果到show物件上
            private void ContexRecognition(int iIndex, object obj, SpeechLib.SpeechRecognitionType type, SpeechLib.ISpeechRecoResult result)
            {
                textBox1.Text += "You Say:" + result.PhraseInfo.GetText(0, -1, true) + "\r\n";
            }

            //将识别结果丢给物件textbox1
            public void BeginRec(Control tbResult)
            {
                isrg.DictationSetState(SpeechRuleState.SGDSActive);
                textBox1 = tbResult;
            }

            public void EndRec()
            {
                isrg.DictationSetState(SpeechRuleState.SGDSActive);
            }
        }


    }
}

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