我不得不以NON mvvm方式實現基本的漫遊。我有一個消息監聽器坐在我的主視圖的構造函數中,它偵聽頁面導航消息(自定義消息學習它,喜歡它,使用它),然後它將導航框架的內容源設置爲在信息。我有我的頁面和子頁面導航設置使用字符串常量的URL。
public MainPage()
{
InitializeComponent();
Loaded += OnLoaded;
WebContext.Current.Authentication.LoggedOut +=
new EventHandler<System.ServiceModel.DomainServices.Client.ApplicationServices.AuthenticationEventArgs>(Authentication_LoggedOut);
Messenger.Default.Register<msgs.NavigationRequest<PageURI>>(this, (uri => ContentFrame.Navigate(uri.Content)));
Messenger.Default.Register<WavelengthIS.Core.Messaging.ExceptionMessage>(this, ex => ShowExceptionMessage(ex));
Messenger.Default.Register<WavelengthIS.Core.Messaging.StringMessage>(this, str => ShowMessageForUser(str));
}
public class PageURI : Uri
{
public PageURI(string uriString, UriKind uriKind)
: base(uriString, uriKind)
{
}
}
public class PageLinks
{
public const string SEARCHBYDAYCOUNTVIEW = "/Views/PatientSearchHeaders/SearchByDayCountView.xaml";
public const string SEARCHBYPATIENTCRITERIAVIEW = "/Views/PatientSearchHeaders/SearchByPatientCriteriaView.xaml";
public const string QUESTIONAIRRESHELL = "/Views/QuestionairreViews/QuestionairreShell.xaml";
public const string HOME = "/Views/PrimarySearchView.xaml";
public const string REPORTS = "/Views/ReportsPage.xaml";
public const string LOGINPAGE = "/Views/LoginPageView.xaml";
}
實際調用VM:
private void OnSurveyCommandExecute()
{
Wait.Begin("Loading Patient List...");
_messenger.Send<ReadmitPatientListViewModel>(this);
_messenger.Send<Messages.NavigationRequest<SubClasses.URI.PageURI>>(GetNavRequest_QUESTIONAIRRESHELL());
}
private static Messages.NavigationRequest<SubClasses.URI.PageURI> GetNavRequest_QUESTIONAIRRESHELL()
{
Messages.NavigationRequest<SubClasses.URI.PageURI> navRequest =
new Messages.NavigationRequest<SubClasses.URI.PageURI>(
new SubClasses.URI.PageURI(Helpers.PageLinks.QUESTIONAIRRESHELL, System.UriKind.Relative));
return navRequest;
}