WPF TreeView永遠不會使用HierarchicalDataTemplate填充

Question

隨着下面的代碼，我的樹視圖永遠不會填充。 任何人都可以看到我做錯了嗎？

感謝

public class FouList 
{ 
    public string Source { get; set; } 
    public List<FouData> ListOfFou { get; set; } 
} 

public struct FouData 
{ 
    public string Name { get; set; } 
} 

<Window.Resources> 
<HierarchicalDataTemplate DataType="{x:Type local:FouList}" 
           ItemsSource="{Binding Path=ListOfFou}"> 
    <Border BorderBrush="Black" 
       BorderThickness="2" 
       CornerRadius="10">    
      <TextBlock Margin="10,0,0,0" 
          Text="{Binding Source}"></TextBlock> 

    </Border> 
</HierarchicalDataTemplate> 
<HierarchicalDataTemplate DataType="{x:Type local:FouData}"> 
    <Border BorderBrush="Black" 
       BorderThickness="2" 
       CornerRadius="10">   
      <TextBlock Margin="10,0,0,0" 
          Text="{Binding Name}"></TextBlock>    

    </Border> 
</HierarchicalDataTemplate> 
</Window.Resources> 


<TreeView Margin="26,0,35,12" Name="treeView1" Height="298" 
    ItemsSource="{Binding Path=FouList}" VerticalAlignment="Top"/> 

FouList FL = new FouList(); 
//code to populate FL 
//I've debugged and can see it populating correctly 
treeView1.DataContext = FL; 

Answer 1

變化treeView1的綁定不正確。我想你打算綁定到屬性ListOfFou，而不是FouList。

<TreeView Margin="26,0,35,12" Name="treeView1" Height="298" 
      ItemsSource="{Binding Path=ListOfFou}" VerticalAlignment="Top"/> 

Answer 2

我會嘗試要麼改變你的

List<FouData> ListOfFou { get; set; } 

到

ObservableCollection<FouData> ListOfFou { get; set; } 

或傳播與NotifyPropertyChanged("ListOfFou");