Question

我有两个带有集合的ViewModel，并将它们分别设置为ItemsSource到一个Pivot和一个ListBox。问题是我的ListBox在Pivot的DataTemplate中没有任何反应？ ListBox没有填充..还有PivotItem.Header不起作用我的XAML出了什么问题？

我的页面前端：

<Pivot ItemsSource="{Binding tripTypeViewModel.TripTypeViewModelDataSource}" x:Name="TripsSegmentsPivot" Title=" " Foreground="#FF888888" Style="{StaticResource PivotStyle1}" SelectionChanged="Pivot_SelectionChanged" Margin="0" Grid.Row="1">
        <Pivot.ItemTemplate>
            <DataTemplate>
                <PivotItem Margin="8,8,8,0" Background="Red">
                    <PivotItem.Header>
                        <TextBlock Text="{Binding tripTypeViewModel.HeaderText}" Margin="0, 16, 0, 0" Foreground="#FF888888" FontSize="32" FontFamily="Segoe WP" FontWeight="Light"/>
                    </PivotItem.Header>
                    <ListBox x:Name="ItemsLB" ItemsSource="{Binding tripTypeViewModel.Segment}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="DarkKhaki">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <Button Content="test" Width="Auto" Height="Auto" HorizontalAlignment="Stretch"/>
                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>
                </PivotItem>
            </DataTemplate>
        </Pivot.ItemTemplate>
    </Pivot>

这是我的ViewModel：

public class TripTypeViewModel：TripsResponseTypeViewModel，INotifyPropertyChanged { #region改变了公共事件PropertyChangedEventHandler PropertyChanged;

    private void NotifyPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = PropertyChanged;

        if (null != handler)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    #endregion

    private ObservableCollection<TripTypeSegment> segmentField;
    public ObservableCollection<TripTypeSegment> Segment
    {
        get
        {
            if (null != this.Trips)
            {
                return this.segmentField;
            }
            return new ObservableCollection<TripTypeSegment>();
        }
        set
        {
            this.segmentField = value;
        }
    }

    private string strHeaderText;
    public string HeaderText
    {
        get
        {
            if (null != this.Trips)
            {
                if (null != this._trips.name)
                {
                    return this._trips.name;
                }
            }

            return "Trip";
        }
        set
        {
            this.strHeaderText = value;
        }
    }

    public TripTypeViewModel()
    {
        this.TripTypeViewModelDataSource.Clear();

        foreach (TripType tt in TripsResponseTypeViewModelDataSource.FirstOrDefault().Trip)
        {
            this.TripTypeViewModelDataSource.Add(tt);
        }
    }
    ...

    private ObservableCollection<TripType> tripTypeViewModelDataSource;
    public ObservableCollection<TripType> TripTypeViewModelDataSource
    {
        get
        {
            if (null == this.tripTypeViewModelDataSource)
            {
                this.tripTypeViewModelDataSource = new ObservableCollection<TripType>();
            }

            return this.tripTypeViewModelDataSource;
        }
    }

这是我的ViewModel的Master类：

    class CompositeViewModel
    {
        public static TripsResponseTypeViewModel tripsResponseTypeViewModel { get; set; }
        public static TripTypeViewModel          tripTypeViewModel          { get; set; }

        static CompositeViewModel()
        {
            tripsResponseTypeViewModel = new TripsResponseTypeViewModel();
            tripTypeViewModel          = new TripTypeViewModel();
        }
    }

我的观点代码隐藏：

    public MyTripsPage()
    {
        this.InitializeComponent();

        this.DataContext = new CompositeViewModel();
    }

不仅没有填充ListBox，还没有设置pivot项的标题？那是为什么？

数据透视表模板无法正常工作

0 个答案: