C#制作简单的语音朗读软件(可输出语音文件)

需要引用类库：System.Speech.dll

解决方案资源管理器下找到项目，右键引用，添加引用，搜索关键字""speech""可找到“System.Speech”

C#制作简单的语音朗读软件(可输出语音文件)
在窗体加载时发生的事件下添加代码：                      

                        textBox2.Text = Environment.CurrentDirectory;

                        button2.Enabled = false;

                        button3.Enabled = false;

C#制作简单的语音朗读软件(可输出语音文件)
在“开始朗读”事件下添加代码：                        

                        if ( richTextBox1.Text.Trim()=="""")

                        {      return;      }

                        //判断是否输出文件

                        if (checkBox1.Checked==true)

                        {

                                try

                                {

                                        speech = new SpeechSynthesizer();

                                        //同步朗读文本

                                        //speech.Speak(richTextBox1.Text);

                                        //异步朗读文本

                                        speech.SpeakAsync(richTextBox1.Text);

                                        speech.Volume = (int)num_yl.Value;          //设置音量

                                        speech.Rate = (int)num_speed.Value;        //设置朗读速度

                                        //输出文件

                                        speech.SetOutputToWaveFile(CheckPathTruth(textBox2.Text.Trim()));//输出语言文件

                                        button3.Enabled = true; button2.Enabled = true;

                                }

                                catch (Exception ex)

                                {    MessageBox.Show(ex.Message);        return;      }

                        }

                        else

                        {

                                try

                                {

                                        speech = new SpeechSynthesizer();

                                        speech.SpeakAsync(richTextBox1.Text);

                                        speech.Volume =(int) num_yl.Value;              //音量

                                        speech.Rate = (int)num_speed.Value;          //朗读速度

                                      button3.Enabled = true; button2.Enabled = true;

                                }

                                catch (Exception ex)

                                { MessageBox.Show(ex.Message); return; }

                        }

在“取消朗读”事件下添加代码：

                        //停止朗读

                        speech.SpeakAsyncCancelAll();

                        //释放资源！

                        speech.Dispose();

在“停止朗读”事件下添加代码：

                      if (button3.Text==""暂停"")

                      {

                              speech.Pause();//暂停

                              button3.Text = ""继续"";

                      }

                      else if (button3.Text == ""继续"")

                      {

                              speech.Resume();//继续

                              button3.Text = ""暂停"";

                      }

在“...”按钮下添加代码：

OpenFileDialog open = new OpenFileDialog();

                        open.InitialDirectory = ""c:\\""; //设置初始目录

                        open.Multiselect = false;              //设置是否可以选择多个文件

                        open.DefaultExt = "".txt"";              //设置默认文件拓展名

                        open.Filter = ""txt文本|*.txt|所以文件|*.*"";

                        open.ShowHelp = true;              //是否显示帮助按钮

                        //判断是否点击了取消或关闭按钮

                        //如果不判断，会出现异常

                        if (open.ShowDialog()!=DialogResult.Cancel)

                        {

                                string str = open.FileName;

                                textBox1.Text = str;

                        }

                        else

                        { return; }

                        //获取文件内容，放到      richTextBox1    里

                        richTextBox1.Text = GetFileStreamOrReadToEnd(textBox1.Text.Trim());

自定义函数如下：    

                ///

                /// 判断文件路径是否正确

                ///

                ///
                /// 返回正确的文件路径
                public string CheckPathTruth(string path)

                {

                        if (    !path.Contains("".wav"") )

                        {

                                MessageBox.Show(""输出文件有误！"");

                                return null;

                        }

                        else

                        {

                                return path;

                        }

                        return null;

                }

自定义函数如下：    

                ///

                /// 获取文件内容

                ///

                ///
                ///
              public string GetFileStreamOrReadToEnd(string filepath)

                {

                        FileStream fs = new FileStream(filepath, FileMode.OpenOrCreate);

                        StreamReader sr = new StreamReader(fs,Encoding.Default);

                        //获取所以文本

                        string str= sr.ReadToEnd();

                        //要关闭！

                        fs.Close();            sr.Close();

                        return str;

                }