A couple of questions:

  1. I created the Forms folder and threw MainWindow.xaml there, in App.xaml registered a new path for StartupUri , but now I swear on the namespace, how can I fix it?
  2. What to read so that I no longer ask such questions?

    1 answer 1

    You need to change the namespace the file MainWindow.xaml.cs . It should turn out like this:

      namespace НазваниеПроекта.Forms { public partial class MainWindow { //.... } }

    What to read so that I no longer ask such questions?

    Windows Presentation Foundation Unleashed, Adam Nathan