Windows Phone Silverlight中的NavigationService

Question

我可以使用Btn_Click方法調用NavigationService

private void Com_Click(object sender, RoutedEventArgs e)
{   string test = "Com";
    var x = NavigationService.Navigate(new Uri(@"/PageList.xaml" + "?msg1=" + test, UriKind.Relative));
}

但是我不能以這種方式調用相同的服務

public MainPage()
{
    InitializeComponent();
    ...
    Test();
}    
private void Test()
{   string test = "Com";
    var x = NavigationService.Navigate(new Uri(@"/PageList.xaml" +   "?msg1=" + test, UriKind.Relative));
}

Answer 1

嘗試不使用var x = ：

  private void Test()
  {  
    string test = "Com";
     NavigationService.Navigate(new Uri(@"/PageList.xaml" +   "?msg1=" + test, UriKind.Relative));
  }