1、使用DotNetSpeech.dll。

 1 /// <summary>
 2 
 3 /// 朗读
 4 /// </summary>
 5 /// <param name="text">要朗读的文本</param>
 6 private void Read(string text)
 7 {
 8     SpVoice sv = new SpVoice();
 9     sv.Rate = 0;//设置朗读速度
10     SpeechVoiceSpeakFlags SSF = SpeechVoiceSpeakFlags.SVSFlagsAsync;
11     sv.Speak(text, SSF);
12 }
13 /// <summary>
14 /// 生成声音文件
15 /// </summary>
16 /// <param name="text">要朗读的文本</param>
17 /// <param name="filePath">生成声音文件的路径</param>
18 /// <param name="fileName">生成声音文件的名称</param>
19 private void CreateFile(string text, string filePath,string fileName)
20 {
21     if (!Directory.Exists(filePath))
22         Directory.CreateDirectory(filePath);
23     SpVoice sv = new SpVoice();
24     SpeechVoiceSpeakFlags SVSF = SpeechVoiceSpeakFlags.SVSFlagsAsync;
25     SpeechStreamFileMode SSFM = SpeechStreamFileMode.SSFMCreateForWrite;
26     SpFileStream SFS = new SpFileStream();
27     SFS.Open(filePath+fileName, SSFM, false);
28     sv.AudioOutputStream = SFS;
29     sv.Speak(text, SVSF);
30     sv.WaitUntilDone(System.Threading.Timeout.Infinite);
31     SFS.Close();
32 }
33 2、 使用System.Speech
34 
35 SpeechSynthesizer ss = new SpeechSynthesizer();
36 //播放
37 if (ss != null)
38 {
39     ss.Dispose();
40     ss.SpeakAsync("朗读的文本");
41 }
42 //暂停
43 if (ss.State == SynthesizerState.Speaking)
44 {
45     ss.Pause();
46 }
47 //继续
48 if (reader.State == SynthesizerState.Paused)
49 {
50     ss.Resume();
51 }
52 //停止
53 if (ss != null)
54 {
55     ss.Dispose();
56 } 

  收集整理，非原创。转载：https://www.cnblogs.com/sydeveloper/archive/2013/05/29/3107090.html