在WPF主窗口中调用方法 [英] CALLING a method in WPF main window
问题描述
我遇到了问题，我想打开主窗口然后我希望窗口说欢迎使用电子邮件系统。我不知道出了什么问题，它先说出来然后出现了窗口，我希望窗口出现然后说出消息
我的代码
公共部分班级MainWindow：MetroWindow
{
私人SpeechRecognitionEngine sre;
private SpeechSynthesizer synth;
public MainWindow（）
{
InitializeComponent（）;
synth = new SpeechSynthesizer（）;
sre = new SpeechRecognitionEngine（）;
speak（）;
}
public void speak（）
{
synth.SetOutputToDefaultAudioDevice（）;
synth.Speak（欢迎使用电子邮件系统）;
我尝试了什么：
在同一类和calle的方法中生成对象d主窗口，没有工作
I am having a problem , I want to open main window and then i want the window to speak "welcome to email system " . I dont know what is wrong , it speaks this first and then the window appears , i want the window to appear and then say the message
my code
public partial class MainWindow : MetroWindow
{
private SpeechRecognitionEngine sre;
private SpeechSynthesizer synth;
public MainWindow()
{
InitializeComponent();
synth = new SpeechSynthesizer();
sre = new SpeechRecognitionEngine();
speak();
}
public void speak()
{
synth.SetOutputToDefaultAudioDevice();
synth.Speak("Welcome to email System");
What I have tried:
made object in the method of the same class and called the main window, didnt work
推荐答案
Speak是一个阻塞操作 - 在方法完成之前它不会返回： SpeechSynthesizer.Speak Method（String）（System.Speech.Synthesis） [ ^ ]
您可以使用异步方法替换它： SpeechSynthesizer.SpeakAsync Method（String）（ System.Speech.Synthesis） [ ^ ]这可能有所帮助，但我首先将代码移动到ContentRendered事件而不是将其放在构造函数中，然后将其设为asnyc。
Speak is a blocking operation - it doesn't return until the method completes: SpeechSynthesizer.Speak Method (String) (System.Speech.Synthesis)[^]
You could replace it with the asynchronous method: SpeechSynthesizer.SpeakAsync Method (String) (System.Speech.Synthesis)[^] which may help, but I'd start by moving the code to the ContentRendered event rather than putting it in the constructor and then make it asnyc.
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