嵌套的ListView不具有約束力正確

Question

我的XAML工作的每一個包含屬性列表的產品清單。當我放入靜態文本時，我有XAML的功能，但是當我嘗試使用對象屬性時，什麼都不顯示。

這是我的XAML：

<ListView ItemsSource="{Binding Products}"> 
      <ListView.ItemContainerStyle> 
       <Style TargetType="ListViewItem"> 
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/> 
       </Style> 
      </ListView.ItemContainerStyle> 
      <ListView.ItemTemplate> 
       <DataTemplate> 
        <Grid HorizontalAlignment="Stretch"> 
         <Grid.ColumnDefinitions> 
          <ColumnDefinition/> 
          <ColumnDefinition /> 
          <ColumnDefinition/> 
         </Grid.ColumnDefinitions> 
         <TextBlock Text="{Binding Name}" FontSize="32" Margin="5" /> 
         <GridView Grid.Column="1" ItemsSource="{Binding Attributes}"> 
          <GridView.ItemContainerStyle> 
           <Style TargetType="GridViewItem"> 
            <Setter Property="HorizontalContentAlignment" Value="Stretch" /> 
            <Setter Property="HorizontalAlignment" Value="Stretch"/> 
           </Style> 
          </GridView.ItemContainerStyle> 
          <GridView.ItemTemplate> 
           <DataTemplate> 
            <StackPanel Orientation="Horizontal"> 
             <TextBlock Text="{Binding Key}" Foreground="White" Height="Auto"/> 
             <TextBlock Text="{Binding Value}" Foreground="White" Height="Auto"/> 
            </StackPanel> 
           </DataTemplate> 
          </GridView.ItemTemplate> 
         </GridView> 

         <Grid Grid.Column="2"> 
          <Grid.RowDefinitions> 
           <RowDefinition /> 
           <RowDefinition /> 
          </Grid.RowDefinitions> 

          <TextBlock Text="Here is some selling point about product 1." FontSize="14" Margin="5" /> 
          <StackPanel Grid.Row="1" Orientation="Horizontal"> 
           <TextBlock Margin="5" FontSize="14" Text="1/4 oz: $150" /> 
           <TextBlock Margin="5" FontSize="14" Text="1/2 oz: $250" /> 
           <TextBlock Margin="5" FontSize="14" Text="1 oz: $450" /> 
          </StackPanel> 
         </Grid> 
        </Grid> 
       </DataTemplate> 
      </ListView.ItemTemplate> 
      <Style TargetType="ListView"> 
       <Setter Property="HorizontalAlignment" Value="Stretch"/> 
      </Style> 
     </ListView> 

這裏是我的對象定義：

public class Product 
{ 

    public string Name { get; set; } 

    public string SellingPoint { get; set; } 

    public List<KeyValuePair<string, string>> Attributes { get; set; } 

    public Scale Scale { get; set; } 

    public UnitOfMeasure UoM { get; set; } 
} 

我原本只是試圖用字典的屬性，但發現沒有XAML綁定爲字典。另一篇文章建議我使用List>來代替。我知道我綁定的屬性很好，因爲，當我使用靜態文本，屬性的正確數量顯示爲模擬對象，我創建（2個KeyValuePairs每個產品）。

Answer 1

也許這是不是你問什麼，但你可以對屬性，如創建自己的類：

public class Attribute 
{ 
    public string Name {get;set;} 
    public string Value {get;set;} 
} 

然後你就可以使用List<Attribute>爲屬性在Product類而不是List<KeyValuePair<string, string>>。

你的XAML看起來像：

<GridView Grid.Column="1" ItemsSource="{Binding Attributes}"> 
          <GridView.ItemContainerStyle> 
           <Style TargetType="GridViewItem"> 
            <Setter Property="HorizontalContentAlignment" Value="Stretch" /> 
            <Setter Property="HorizontalAlignment" Value="Stretch"/> 
           </Style> 
          </GridView.ItemContainerStyle> 
          <GridView.ItemTemplate> 
           <DataTemplate> 
            <StackPanel Orientation="Horizontal"> 
             <TextBlock Text="{Binding Name}" Foreground="White" Height="Auto"/> 
             <TextBlock Text="{Binding Value}" Foreground="White" Height="Auto"/> 
            </StackPanel> 
           </DataTemplate> 
          </GridView.ItemTemplate> 
         </GridView>