App.xaml and Application_Startup()

Question

Hello:

 

Well folks this WPF and MVVM is an adventure that's for sure. What I

have so far is the start of MVVM with Controller.

 

I can get to the controller.Start() through the Application_Startup() of

the App.xaml.cs.

 

I have a PayrollView.xaml and a PayRollViewModel.cs

 

In the controller.Start() how do I make the PayRollView.xaml show on the

screen?

 

Answer 1

If your application does not have any main window, you cannot show any XAML or View on the screen. So you have to build a view as the Application Main Window, and show it first. Then you could host your *.xaml content as the child in the MainWindow. Or you could show your Window View as the Main Window of the application. I recommend you to download thePrism project, it has a sample named "Hello World". That contains a class "Bootstrapper" class which set the main window for app, you could learn the architecture from Prism.

Sincerely,

---

Bob Bao [MSFT]
MSDN Community Support | Feedback to us

Answer 2

Thanks I came past that problem by using source code from demo project

and talking to some guys at work. Yeah I found out  that a MainPage is

needed before you can show usercontrols.