我正在尝试在 Win8 应用程序的 XAML 页面上填充列表视图控件。我已将以下属性添加到页面 XAML:
<common:LayoutAwarePage x:Class="SecAviTools.ViewWeatherHome"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:common="using:MyNameSpace.Common"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="using:MyNameSpace"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:viewmodel="using:MyNameSpace.Win8ViewModel"
x:Name="pageRoot"
DataContext="{Binding DefaultViewModel,
RelativeSource={RelativeSource Self}}"
mc:Ignorable="d">
<!-- ... -->
<ListView ItemsSource="{Binding Path=viewmodel:Stations}">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Path=Id}"/>
<TextBlock Text="{Binding Path=Name}"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
我的源类是:
namespace MyNameSpace.Win8ViewModel
{
public class Stations : INotifyPropertyChanged, INotifyCollectionChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
public event NotifyCollectionChangedEventHandler CollectionChanged;
protected void OnCollectionChanged<T>(NotifyCollectionChangedAction action, ObservableCollection<T> items)
{
if (CollectionChanged != null)
CollectionChanged(this, new NotifyCollectionChangedEventArgs(action, items));
}
public Stations()
{
AllStations = new ObservableCollection<Station>();
AddStations(new List<Station>());
}
public ObservableCollection<Station> AllStations { get; private set; }
public void AddStations(List<Station> stations)
{
AllStations.Clear();
foreach (var station in stations)
AllStations.Add(station);
OnCollectionChanged(NotifyCollectionChangedAction.Reset, AllStations);
OnPropertyChanged("AllStations");
}
}
public class Station
{
public int Id { get; set; }
public string Name { get; set; }
}
}
页面上还有一个按钮(此处未显示)执行以下操作:
public sealed partial class MyPage : MyNameSpace.Common.LayoutAwarePage
{
private Stations m_Stations = new Stations();
//...
private async void SearchButtonClick(object sender, RoutedEventArgs e)
{
var list = new List<Station>();
list.Add(new Station() { Id = 0, Name = "Zero" });
list.Add(new Station() { Id = 1, Name = "One" });
m_Stations.AddStations(list);
}
}
但是,当我运行代码时,列表视图中没有显示任何内容。我错过了什么?
TIA