C#文本转语音，可导出在本地mp3或者wav文件

整体效果：

talk is cheap，show you the code！

private void Speak()
        {

            speech.Rate = rate;
            //speech.SelectVoice("Microsoft Lili");//设置播音员（中文）
            //speech.SelectVoice("Microsoft Anna"); //英文
            speech.Volume = value;
            string txt = "";
            this.Invoke((MethodInvoker) delegate
            {
                txt = rtxt.Text;
            });

            speech.SpeakAsync(txt);//语音阅读方法
            speech.SpeakCompleted += speech_SpeakCompleted;//绑定事件
        }

        private void speech_SpeakCompleted(object sender, SpeakCompletedEventArgs e)
        {
            this.Invoke((MethodInvoker) delegate
                {
                    btnTryListen.Text = "语音试听";
                });
            
        }


        private void btnSaveFile_Click(object sender, EventArgs e)
        {
            string text = rtxt.Text;

            if (text.Trim().Length == 0)
            {
                MessageBox.Show("空内容无法生成!", "错误提示");
                return;
            }

            this.SaveFile(text);
        }

        /// <summary>
        /// 生成语音文件的方法
        /// </summary>
        /// <param name="text"></param>
        private void SaveFile(string text)
        {
            speech = new SpeechSynthesizer();
            var dialog = new SaveFileDialog();
            dialog.Filter = "*.wav|*.wav|*.mp3|*.mp3";
            dialog.ShowDialog();

            string path = dialog.FileName;
            if (path.Trim().Length == 0)
            {
                return;
            }
            speech.SetOutputToWaveFile(path);
            speech.Volume = value;
            speech.Rate = rate;
            speech.Speak(text);
            speech.SetOutputToNull();
            MessageBox.Show("生成成功!在" + path + "路径中！", "提示");

        }