我想使用數據綁定將分層結構綁定到TreeView,但TreeView中不顯示任何東西。在控制綁定到TreeView的HierarchicalDataTemplate不會產生任何東西
XAML代碼:
<UserControl x:Class="CQViewer.Views.HierarchyView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:h="clr-namespace:CQViewer.Hierarchy"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
<TabControl Margin="5, 0, 5, 5" Grid.Column="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
<TabItem Header="Repository">
<TreeView Margin="5, 5, 5, 5" HorizontalAlignment="Stretch" ItemsSource="{Binding Path=Nodes}">
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type h:HierarchyNode}"
ItemsSource="{Binding ChildNodes}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
</TreeView.Resources>
</TreeView>
</TabItem>
<TabItem Header="Libraries">
<ListBox Margin="5, 5, 5, 5" HorizontalAlignment="Stretch" />
</TabItem>
</TabControl>
</Grid>
</UserControl>
,我現在用的是類:
using System.Collections.Generic;
namespace CQViewer.Hierarchy
{
class HierarchyNode
{
#region Fields
private IList<HierarchyNode> childNodes_;
#endregion
#region Construction/Deconstruction/Initialisation
/// <summary>
/// Constructor
/// </summary>
public HierarchyNode (string Name)
{
this.Name = Name;
childNodes_ = new List<HierarchyNode>();
}
#endregion
#region Properties
public string Name { get; set; }
public IList<HierarchyNode> ChildNodes
{
get { return childNodes_; }
set { childNodes_ = value; }
}
#endregion
}
}
我想要做的就是填充使用的childNodes在使用HierarchicalDataTemplate的HierarchyNode對象的TreeView ,同時爲當前對象的名稱顯示一個TextBlock。根HierarchyNode是在ViewModel的構造函數中創建的。數據綁定在這個UserControl中起作用,因爲將一個List <>綁定到ListBox工作正常。
我在做什麼,爲什麼它不工作?
編輯:視圖模型用於查看
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CQViewer.Hierarchy;
namespace CQViewer.ViewModels
{
class HierarchyViewModel : ViewModelBase
{
#region Fields
#endregion
#region Construction/Deconstruction/Initialisation
/// <summary>
/// Constructor
/// </summary>
public HierarchyViewModel()
{
Nodes = new HierarchyNode ("Test1");
HierarchyNode Node2 = new HierarchyNode ("TestX");
Node2.ChildNodes.Add (new HierarchyNode ("TestY"));
Nodes.ChildNodes.Add (Node2);
Nodes.ChildNodes.Add (new HierarchyNode ("Test3"));
}
#endregion
#region Properties
public HierarchyNode Nodes { get; set; }
#endregion
#region Public Access Interface
/// <summary>
/// Creates/Recreates the hierarchy
/// </summary>
public void InitializeHierarchy()
{
// TODO Clear the tree view
}
/// <summary>
/// Gets the folder currently selected in the tree view hierarchy
/// </summary>
public string GetCurrentlySelected()
{
return "$/";
}
#endregion
#region Private Functions
#endregion
}
}
您能否顯示HierarchyView控件使用的視圖模型? –
@MichałKomorowski完成。無論如何,它主要是測試的東西。 – MKII