Wpf檢測何時從不同的窗口關閉窗口

Question

private void newmail_Click(object sender, RoutedEventArgs e) 
    { 
     Nieuweemail _nieuweEmail = new Nieuweemail(_username); 
     _nieuweEmail.Show(); 
    } 

當該窗口關閉時，我想調用一個函數在我的主窗口中執行。

 _nieuweEmail.Closed += setContent(); 

我可以這樣做，如果我可以在將要關閉的窗口中調用它。但事實並非如此。我如何檢測這個？

Answer 1

假設setContent和newmail_Click是你的主窗口兩種方法...

private void newmail_Click(object sender, RoutedEventArgs e) 
{ 
    Nieuweemail _nieuweEmail = new Nieuweemail(_username); 
    _nieuweEmail.Closed += SetContentHandler; 
    _nieuweEmail.Show(); 
} 

private void SetContentHandler(object sender, EventArgs e) 
{ 
    setContent(); 
}