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我有一個樹狀視圖，其中有可選項目，其中可能會觸發某些代碼操作的子項目。當子項目被點擊時，該動作應該被執行，但是父項目必須保持/成爲選擇的項目。WPF在樹狀視圖中操縱選定的項目
我面臨的問題是該項目沒有被正確取消選擇，導致在樹視圖中選擇多個項目。
下面是樹視圖中的XAML：
<TreeView Name="Treeview1" Style="{StaticResource vcc_Treeview}" >
<TreeView.ItemTemplate >
<HierarchicalDataTemplate ItemsSource="{Binding Children}" >
<StackPanel Orientation="Horizontal">
<Image Source="{Binding ImgSrc}" Style="{StaticResource vcc_TreeviewItemImage}" />
<TextBlock Text="{Binding Description}" Style="{StaticResource vcc_TreeviewItemTextblock}" Foreground="{Binding TextColorBrush}" />
</StackPanel>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay, Converter={StaticResource clsBindingDebugger}}" />
</Style>
</TreeView.ItemContainerStyle>
</TreeView>
的clsBindingDebugger什麼也不做，但調試打印轉換後的值，並通過型轉換和convertback值。
接下來的樹型視圖類
Public Class MyTreeviewItem
Implements INotifyPropertyChanged
Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged
Public Event MyTreeviewItem_ExpandedChanged(MTI As MyTreeviewItem, IsExpanded As Boolean)
Public Event MyTreeviewItem_SelectedChanged(MTI As MyTreeviewItem, IsSelected As Boolean)
Public Sub New(Optional Level_ As Integer = 1, Optional ByVal Key_ As String = "")
MyBase.New()
Me.Children = New ObservableCollection(Of MyTreeviewItem)
_Key = Key_
_Level = Level_
End Sub
Private _Level As Integer
Public Property Level As Integer
Get
Level = _Level
End Get
Set(value As Integer)
_Level = value
End Set
End Property
Private _Descr As String = ""
Public Property Description As String
Get
Description = _Descr
End Get
Set(value As String)
_Descr = value
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("Description"))
End Set
End Property
Private _Key As String = ""
Public Property Key As String
Get
Key = _Key
End Get
Set(value As String)
_Key = value
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("Key"))
End Set
End Property
Private _ImgSrc As ImageSource
Public Property ImgSrc As ImageSource
Get
ImgSrc = _ImgSrc
End Get
Set(value As ImageSource)
_ImgSrc = value
End Set
End Property
Private _Children As ObservableCollection(Of MyTreeviewItem)
Public Property Children As ObservableCollection(Of MyTreeviewItem)
Get
Return _Children
End Get
Set(value As ObservableCollection(Of MyTreeviewItem))
_Children = value
End Set
End Property
Private _IsSelected As Boolean
Overloads Property IsSelected As Boolean
Get
Return _IsSelected
End Get
Set(ByVal value As Boolean)
_IsSelected = value
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("IsSelected"))
RaiseEvent MyTreeviewItem_SelectedChanged(Me, _IsSelected)
End Set
End Property
Private _IsActionItem As Boolean
Overloads Property IsActionItem As Boolean
Get
Return _IsActionItem
End Get
Set(ByVal value As Boolean)
_IsActionItem = value
End Set
End Property
End Class
稍短的版本，最後我觸發事件MyTreeviewItem_SelectedChanged：
假設樹視圖的樣子：
item 1
--Action 1
--Action 2
Item 2
--Action 3
--Action 4
在我出發情況項目2被選中。現在我單擊操作1，所以應該執行操作，之後項目1應該是選定的項目。 的debug.print結果在這些行：
ConvertBack: False
Item 2 Selected = False
Convert: False
ConvertBack: True
Action 2 Selected = True
Action 2 Selected = False
Convert: True
Item 1 Selected = True
Convert: False
此時項1被選擇，因爲它應該是。 現在我單擊操作3.
ConvertBack: False
Action 2 Selected = False
Convert: False
ConvertBack: True
Action 3 Selected = True
Action 3 Selected = False
Convert: True
Item 2 Selected = True
Convert: False
其結果是，第1項和第2項均選擇，其中只有2項應選擇。第二個調試器塊顯示「Action 2 Selected = False」，這應該是「Item 1 Selected = False」
我希望我很清楚。任何人都可以指點我解決我的問題嗎？ 謝謝！