У меня есть BooksListViewModel & BooksListView, в котором есть только список со списком с именем Books, который должен быть заполнен с помощью свойства BindableCollection<BookViewModel> Books в ViewModel.
Ничего не появляется, и яЯ думаю, что либо список и свойство книги не связаны должным образом, либо это BookView и BookViewModel, но я не могу понять, какие именно.
Я также использую SimpleInjector, и я думаю,может я неправильно настроил?Я скопировал большую часть кода из примеров возможностей Caliburn - в частности, из примера Bindings.
Код для загрузчика:
namespace WPFCaliburnUI
{
public class Bootstrapper : BootstrapperBase
{
private Container _container;
public Bootstrapper()
{
Initialize();
}
protected override void Configure()
{
// Mostly taken from here: https://www.c-sharpcorner.com/blogs/migrating-to-simple-injector-30-with-caliburn-micro-bootstrap-changes
this._container = new Container();
this._container.Options.DefaultScopedLifestyle = new ThreadScopedLifestyle();
this._container.RegisterSingleton<IWindowManager, WindowManager>();
this._container.RegisterSingleton<IEventAggregator, EventAggregator>();
this._container.Register<ShellWindowViewModel>();
this._container.Register<BooksListViewModel>();
SetupContextAndCrudServices() // Removed this method since it's a little long,
// but I did verify it is working correctly.
// Just adds the context and other stuff to the container.
this._container.Verify();
}
protected override void OnStartup(object sender, StartupEventArgs e)
{
DisplayRootViewFor<ShellWindowViewModel>();
}
protected override IEnumerable<Assembly> SelectAssemblies()
{
return new[] { Assembly.GetExecutingAssembly() };
}
protected override object GetInstance(Type service, string key)
{
return this._container.GetInstance(service);
}
protected override IEnumerable<object> GetAllInstances(Type service)
{
IServiceProvider provider = this._container;
Type collectionType = typeof(IEnumerable<>).MakeGenericType(service);
var services = (IEnumerable<object>)provider.GetService(collectionType);
return services ?? Enumerable.Empty<object>();
}
protected override void BuildUp(object instance)
{
var registration = this._container.GetRegistration(instance.GetType(), true);
registration.Registration.InitializeInstance(instance);
}
}
}
BooksListViewModel:
internal class BooksListViewModel : Screen
{
private readonly ICrudServices _service;
private BookViewModel _selectedBook;
public BookViewModel SelectedBook {
get => this._selectedBook;
set => Set(ref this._selectedBook, value);
}
public BooksListViewModel(ICrudServices service)
{
this._service = service;
var booksQuery = _service.ReadManyNoTracked<BookListDto>().Take(10);
var bcBooks = new Collection<BookViewModel>();
foreach (var bookDto in booksQuery)
{
bcBooks.Add(new BookViewModel(bookDto.Title, bookDto.AuthorsOrdered));
}
// I did double check that this worked, Books has 10 items.
this.Books = new BindableCollection<BookViewModel>(bcBooks);
}
public BindableCollection<BookViewModel> Books { get; private set; }
}
BooksListView:
<Page
x:Class="WPFCaliburnUI.Views.BooksListView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WPFCaliburnUI.ViewModels"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
Title="BooksListView"
d:DesignHeight="450"
d:DesignWidth="800"
mc:Ignorable="d">
<Grid Name="ContentPanel">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ListBox x:Name="Books">
</ListBox>
<StackPanel
Grid.Row="1"
Margin="0,12"
Orientation="Horizontal">
<TextBlock Margin="0,0,6,0" Text="Selected:" />
<TextBlock x:Name="SelectedBook_Title" />
</StackPanel>
</Grid>
</Page>
BookViewModel:
namespace WPFCaliburnUI.ViewModels
{
internal class BookViewModel
{
public string Title { get; set; }
public string Author { get; set; }
public BookViewModel(string title, string author)
{
this.Title = title;
this.Author = author;
}
}
}
BookView:
<UserControl
x:Class="WPFCaliburnUI.Views.BookView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:cal="http://www.caliburnproject.org"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WPFCaliburnUI.Views"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
d:DesignHeight="450"
d:DesignWidth="600"
mc:Ignorable="d">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Ellipse
Grid.Column="0"
Width="48"
Height="48"
Margin="0,0,12,0"
VerticalAlignment="Top"
Fill="DarkBlue" />
<StackPanel Grid.Column="1">
<TextBlock x:Name="Title"
FontSize="16"
FontWeight="SemiBold" />
<TextBlock x:Name="Author" />
</StackPanel>
</Grid>
</UserControl>
Редактировать: Некоторые люди спрашивают, как называется BooksListViewModel, поэтому воткод от ShellWindowViewModel
namespace WPFCaliburnUI.ViewModels
{
internal class ShellWindowViewModel : Screen
{
private readonly Container _container;
private readonly IWindowManager _windowManager;
private INavigationService navigationService;
public ShellWindowViewModel(Container container, IWindowManager windowManager)
{
this._container = container;
this._windowManager = windowManager;
}
public void RegisterFrame(Frame frame)
{
navigationService = new FrameAdapter(frame);
navigationService.NavigateToViewModel(typeof(BooksListViewModel));
}
}
}