WPF 中的 ListView 不显示 ViewModel 静态数据

Question

我正在创建一个小示例，以在 WPF 页面上使用 ViewModel 显示枚举数据。但不知何故它没有显示。

public class GameParticipants: IGameParticipants
{
    public int Id{ get; set; }
    public List<string> Name { get; set; }
    public Dictionary<int,string> GameWinner { get; set; }
    public DateTime WinningDate { get; set; }
}

public interface IGameParticipants
{
    List<string> Name { get; set; }
    Dictionary<int, string> GameWinner { get; set; }
    DateTime WinningDate { get; set; }
}

ParticipantsViewModel.cs

public class ViewModelBase : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    public void RaisePropertyChanged(string prop)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(prop));
        }
    }
}

public class ParticipantsViewModel : ViewModelBase
{
    public string RemoveUnderscore(string text)
    {
        return text.Replace("_", " ");
    }
    public ParticipantsViewModel()
    {
        Participants = new GamesParticipants()
        {
            Name = new List<string>()
            {
                Handball.ToString(),
                Football.ToString(),
                Cricket.ToString(),
                Badminton.ToString(),
                Tennis.ToString(),
                TableTenis.ToString(),
                Rugby.ToString(),
                Boxing.ToString(),

            }
        };
    }

    private GamesParticipants _participants;
    public GamesParticipants Participants
    {
        get { return _participants; }
        set
        {
            _participants = value;
            RaisePropertyChanged("Participants");
        }
    }
}

MainWindow.xaml

<Window x:Class="Games.MainWindow"
    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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:Games"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
<Grid>
    <Grid.DataContext>
        <local:ParticipantsViewModel/>
    </Grid.DataContext>
    
    <Grid.RowDefinitions>
        <RowDefinition></RowDefinition>
        <RowDefinition></RowDefinition>
        <RowDefinition></RowDefinition>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition></ColumnDefinition>
        <ColumnDefinition></ColumnDefinition>
        <ColumnDefinition></ColumnDefinition>
    </Grid.ColumnDefinitions>
    <ListView ItemsSource="{Binding Path=Participants}" x:Name="lstParticipants" Grid.Row="1" Grid.Column="1" 
      VerticalContentAlignment="Top" ScrollViewer.CanContentScroll="True" d:ItemsSource="{d:SampleData ItemCount=13}">
        <ListView.ItemTemplate>
            <DataTemplate>
                <Viewbox>
                    <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center" Orientation="Horizontal">
                        <TextBlock Grid.Row="0" Text="{Binding Name}" TextWrapping="Wrap" FontWeight="Bold" FontSize="40" Foreground="Black" />
                    </StackPanel>
                </Viewbox>
            </DataTemplate>
        </ListView.ItemTemplate>
    </ListView>
    
    <Button x:Name="btnRandom" Grid.Row="2" Content="First Game" FontSize="45" Foreground="Green" Cursor="Hand"
            
            Grid.Column="1" VerticalAlignment="Center" Click="btnRandom_Click"></Button>

</Grid>

MainWindow.xaml 的 UI

Answer 1

如果要显示在视图模型中创建的字符串（

Handball.ToString()

、

Football.ToString()

等），则应绑定到

Name

对象的

GamesParticipants

属性：

<ListView ItemsSource="{Binding Path=Participants.Name}" x:Name="lstParticipants" Grid.Row="1" Grid.Column="1" 
      VerticalContentAlignment="Top" ScrollViewer.CanContentScroll="True" d:ItemsSource="{d:SampleData ItemCount=13}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <Viewbox>
                <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center" Orientation="Horizontal">
                    <TextBlock Grid.Row="0" Text="{Binding}" TextWrapping="Wrap" FontWeight="Bold" FontSize="40" Foreground="Black" />
                </StackPanel>
            </Viewbox>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>