public partial class Form1 : Form

    {

        private SpeechSynthesizer ss;

        public Form1()

        {

            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            ss = new SpeechSynthesizer();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            ss.Rate = trackbarSpeed.Value;

            ss.Volume = trackbarVoice.Value;

            ss.SpeakAsync(txtSpeechText.Text);

        }

        private void button2_Click(object sender, EventArgs e)

        {

            ss.Pause();

        }

        private void button3_Click(object sender, EventArgs e)

        {

            ss.Resume();

        }

        private void button4_Click(object sender, EventArgs e)

        {

            SpeechSynthesizer ss = new SpeechSynthesizer();

            ss.Rate = trackbarSpeed.Value;

            ss.Volume = trackbarVoice.Value;

            SaveFileDialog savefd = new SaveFileDialog();

            savefd.Filter = "wave Files|*.wav";

            ss.SetOutputToWaveFile(savefd.FileName);

            ss.Speak(txtSpeechText.Text);

            ss.SetOutputToDefaultAudioDevice();

            MessageBox.Show("完成录音~~~", "提示");

        }

        private void button5_Click(object sender, EventArgs e)

        {

            Application.Exit();

        }

    }