/// <summary>
/// Overrides the pages OnAppearing event, calls the Viewmodel's
/// <see cref="MVVMbasics.Viewmodels.BaseViewmodel.OnNavigatedTo">OnNavigatedTo</see> method and passes the
/// parameters that were defined in the original URI.
/// </summary>
protected override void OnAppearing()
{
InstantiateViewmodel();
var app = Application.Current as BaseApplication;
if (app != null)
{
app.CurrentView = this;
}
if (Parameters == null)
{
Parameters = new ParameterList();
}
if (Viewmodel != null)
{
MVVMbasics.Services.ViewState viewState;
if (IsMvvmBasicsBackNavigation())
{
viewState = MVVMbasics.Services.ViewState.Reactivated;
}
else
{
viewState = MVVMbasics.Services.ViewState.Activated;
}
Viewmodel.OnNavigatedTo(new ParameterList(), Parameters, viewState);
}
// Clear the existing list of parameters, otherwise they would again be passed during the next OnNavigatedTo
// event
Parameters.Clear();
base.OnAppearing();
}
/// <summary>
/// Calls the Viewmodel's <see cref="MVVMbasics.Viewmodels.BaseViewmodel.OnNavigatedTo">OnNavigatedTo</see>
/// method.
/// </summary>
private void FireOnNavigatedTo()
{
InstantiateViewmodel();
if (Viewmodel != null)
{
Viewmodel.OnNavigatedTo(new ParameterList(), _parameters,
_opening ? ViewState.Activated : ViewState.Reactivated);
}
// Clear the existing list of parameters, otherwise they would again be passed on to the next OnNavigatedTo
// call
_parameters.Clear();
}
/// <summary>
/// Overrides the pages OnNavigatedTo event, calls the Viewmodel's
/// <see cref="MVVMbasics.Viewmodels.BaseViewmodel.OnNavigatedTo">OnNavigatedTo</see> method and passes the
/// parameters that were defined in the original URI.
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
InstantiateViewmodel();
// Store a reference to the current View's main frame within the Application
// (this reference is needed by the NavigatorService)
var application = Application.Current as BaseApplication;
if (application != null)
{
application.RootFrame = this.Frame;
application.CurrentView = this;
}
if (Parameters == null)
{
Parameters = new ParameterList();
}
if (Viewmodel != null)
{
ViewState viewState;
if (e.NavigationMode != NavigationMode.New || IsMvvmBasicsBackNavigation())
{
viewState = ViewState.Reactivated;
}
else
{
viewState = ViewState.Activated;
}
Viewmodel.OnNavigatedTo(new ParameterList(), Parameters, viewState);
}
// Clear the existing list of parameters, otherwise they would again be passed during the next OnNavigatedTo
// event
Parameters.Clear();
// This is necessary to avoid crashing Visual Studio's visual XAML editor
if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
Window.Current.VisibilityChanged += OnWindowVisibilityChanged;
}
base.OnNavigatedTo(e);
}
