5
我有一个问题,在我看来,在ListBox
控件中显示ReactiveList的内容。当我尝试通过代码隐藏绑定绑定它时(使用this.OneWayBind(...)
),列表保持空白。我正在使用最新的ReactiveUI版本(6.1.0
)。如果我将绑定更改为XAML-Binding并删除对OneWayBind(...)
的调用,则列表将显示五个String元素。如何使用代码隐藏将ReactiveList绑定到WPF ListBox或ListView?
我不知道为什么这不起作用,一个简单的TextBlock.Text
联系按预期工作(请参阅代码)。
MainWindow.xaml:
<Window x:Class="View_Location_Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:local="clr-namespace:View_Location_Test"
xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel>
<ListBox x:Name="ToasterList">
<!-- This is working if you uncomment the above line and remove the OneWayBind call in the view-code: -->
<!--<ListBox x:Name="ToasterList" ItemsSource="{Binding ToasterList}">-->
<ListBox.Resources>
<DataTemplate DataType="{x:Type System:String}">
<TextBlock Text="{Binding}" />
</DataTemplate>
</ListBox.Resources>
</ListBox>
<TextBlock x:Name="ToasterName" />
</StackPanel>
MainWindow.xaml.cs:
public partial class MainWindow : Window, IViewFor<ViewModel>
{
public MainWindow()
{
ViewModel = new ViewModel();
DataContext = ViewModel;
InitializeComponent();
// bind
this.OneWayBind(ViewModel, vm => vm.ToasterList, v => v.ToasterList.ItemsSource);
this.Bind(ViewModel, vm => vm.Name, v => v.ToasterName.Text);
}
public ViewModel ViewModel
{
get { return (ViewModel)GetValue(ViewModelProperty); }
set { SetValue(ViewModelProperty, value); }
}
public static readonly DependencyProperty ViewModelProperty =
DependencyProperty.Register("ViewModel", typeof(ViewModel), typeof(MainWindow), new PropertyMetadata(null));
object IViewFor.ViewModel
{
get { return ViewModel; }
set { ViewModel = (ViewModel)value; }
}
}
ViewModel.cs:
public class ViewModel : ReactiveObject
{
public ViewModel()
{
ToasterList.Add("Toaster 1");
ToasterList.Add("Toaster 2");
ToasterList.Add("Toaster 3");
ToasterList.Add("Toaster 4");
ToasterList.Add("Toaster 5");
}
private String name = "My name";
public String Name
{
get { return name; }
set { this.RaiseAndSetIfChanged(ref name, value); }
}
private ReactiveList<String> toasterList = new ReactiveList<string>();
public ReactiveList<String> ToasterList
{
get { return toasterList; }
set { this.RaiseAndSetIfChanged(ref toasterList, value); }
}
}