我有一个UI元素，它是一个列表视图，其中包含另一个列表视图（一个垂直视图和一个水平视图）。
第一个listview的Itemsource是一个ObservableCollection对象，它反过来包含一个子对象的ObservableCollection。两者都实现了INotifyPropertyChanged接口，并在有用时调用PropetyChanged事件。
如果我添加了新的子对象，我会看到我的第二个listview更新，但是当我更改一个值时，我看不到任何变化。在这种情况下，我必须做些什么才能刷新我的UI元素？
这是我的listview
<ListView x:Name="LstInfoEtape" Margin="0,0,0,0" Style="{StaticResource BaseListView}" Grid.Row="2" Grid.Column="1" >
<ListView.ItemTemplate>
<DataTemplate>
<ListView x:Name="LstEtape" ItemsSource="{Binding LstEtapes}" Background="#00000000" SelectionChanged="ListView_SelectionChanged" ScrollViewer.ScrollChanged="ListView_ScrollChanged">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<Border Width="82" CornerRadius="4" BorderBrush="{Binding ColorSelected}" BorderThickness="3,3,3,3" Visibility="{Binding EtapeVisible}" Background="{Binding ColorBackground}" MouseDown="Border_MouseDown">
<Grid Width="80" >
<Grid.RowDefinitions>
<RowDefinition Height="19"/>
</Grid.RowDefinitions>
<TextBlock Margin="2,0,2,0" x:Name="TxtDateRappel" TextWrapping="Wrap" Grid.Row="0" Text="{Binding DateRappelTerminaison,StringFormat=yyyy-MM-dd,NotifyOnSourceUpdated=True}" Visibility="{Binding EtapeVisible}" FontSize="12" Foreground="{Binding ColorForeground}" />
</Grid>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
我使用的类是那些
Public Class SuiviOperationLite
Implements INotifyPropertyChanged
Private _strNom As String
Private _oLstProcessusLite As ObservableCollection(Of ContratProcessusLite) ' Not implemented yet
Private _oLstEtapeLite As ObservableCollection(Of ContratProcessusEtapeLite)
Public Sub New(ByVal strNom As String,
ByVal oLstProcessusLite As ObservableCollection(Of ContratProcessusLite),
ByVal oLstEtapeLite As ObservableCollection(Of ContratProcessusEtapeLite))
Constructor(strNom, oLstProcessusLite, oLstEtapeLite)
End Sub
Private Sub Constructor(ByVal strNom As String,
ByVal oLstProcessusLite As ObservableCollection(Of ContratProcessusLite),
ByVal oLstEtapeLite As ObservableCollection(Of ContratProcessusEtapeLite))
_strNom = strNom
_oLstProcessusLite = oLstProcessusLite
_oLstEtapeLite = oLstEtapeLite
End Sub
Public Property Nom() As String
Get
Return _strNom
End Get
Set(ByVal value As String)
_strNom = value
End Set
End Property
Public Property LstContratProcessus() As ObservableCollection(Of ContratProcessusLite)
Get
Return _oLstProcessusLite
End Get
Set(ByVal value As ObservableCollection(Of ContratProcessusLite))
_oLstProcessusLite = value
End Set
End Property
Public Property LstEtapes() As ObservableCollection(Of ContratProcessusEtapeLite)
Get
Return _oLstEtapeLite
End Get
Set(ByVal value As ObservableCollection(Of ContratProcessusEtapeLite))
_oLstEtapeLite = value
End Set
End Property
Protected Friend Sub NotifyPropertyChanged(ByVal info As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
End Sub
Public Event PropertyChanged(sender As Object, e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged
End Class
Public Class ContratProcessusEtapeLite
Implements INotifyPropertyChanged
Private _lngId As Long
Private _lngIdSequenceTravail As Long
Private _boolSelected As Boolean
Private _strETapeVisible As String
Private _strColorBackGround As String
Private _strColorForeGround As String
Private _dateRappelTerminaison As Date
Private _oParent As DAL.SuiviOperationLite
Public Sub New(ByVal oParent As DAL.SuiviOperationLite,
ByVal lngId As Long,
ByVal lngIdSequenceTravail As Long,
ByVal boolSelected As Boolean,
ByVal strEtapeVisible As String,
ByVal strColorBackGround As String,
ByVal strColorForeGround As String,
ByVal dateRappelTerminaison As Date)
Constructor(oParent,
lngId, _
lngIdSequenceTravail, _
boolSelected, _
strEtapeVisible, _
strColorBackGround, _
strColorForeGround, _
dateRappelTerminaison)
End Sub
Private Sub Constructor(ByVal oParent As DAL.SuiviOperationLite,
ByVal lngId As Long,
ByVal lngIdSequenceTravail As Long,
ByVal boolSelected As Boolean,
ByVal strEtapeVisible As String,
ByVal strColorBackGround As String,
ByVal strColorForeGround As String,
ByVal dateRappelTerminaison As Date)
_oParent = oParent
_lngId = lngId
_lngIdSequenceTravail = lngIdSequenceTravail
_boolSelected = boolSelected
_strETapeVisible = strEtapeVisible
_strColorBackGround = strColorBackGround
_strColorForeGround = strColorForeGround
_dateRappelTerminaison = dateRappelTerminaison
End Sub
Public Property Parent() As DAL.SuiviOperationLite
Get
Return _oParent
End Get
Set(ByVal value As DAL.SuiviOperationLite)
_oParent = value
End Set
End Property
Public Property ID() As Long
Get
Return _lngId
End Get
Set(ByVal value As Long)
_lngId = value
NotifyPropertyChanged("ID")
End Set
End Property
Public Property IdClientContratSequenceTravail() As Long
Get
Return _lngIdSequenceTravail
End Get
Set(ByVal value As Long)
_lngIdSequenceTravail = value
NotifyPropertyChanged("IdSequence")
End Set
End Property
Public Property Selected() As Boolean
Get
Return _boolSelected
End Get
Set(ByVal value As Boolean)
_boolSelected = value
NotifyPropertyChanged("Selected")
End Set
End Property
Public ReadOnly Property ColorSelected As String
Get
If _boolSelected Then
Return "#FF4394DF"
Else
Return "#FF000000"
End If
End Get
End Property
Public Property EtapeVisible() As String
Get
Return _strETapeVisible
End Get
Set(ByVal value As String)
_strETapeVisible = value
NotifyPropertyChanged("Visible")
End Set
End Property
Public Property ColorBackground() As String
Get
Return _strColorBackGround
End Get
Set(ByVal value As String)
_strColorBackGround = value
NotifyPropertyChanged("Background")
End Set
End Property
Public Property ColorForeground() As String
Get
Return _strColorForeGround
End Get
Set(ByVal value As String)
_strColorForeGround = value
NotifyPropertyChanged("Foreground")
End Set
End Property
Public Property DateRappelTerminaison() As Date
Get
Return _dateRappelTerminaison
End Get
Set(ByVal value As Date)
_dateRappelTerminaison = value
NotifyPropertyChanged("DateRappel")
End Set
End Property
Private Sub NotifyPropertyChanged(ByVal info As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
_oParent.NotifyPropertyChanged("Child")
End Sub
Public Event PropertyChanged(sender As Object, e As PropertyChangedEventArgs) Implements INotifyPropertyChanged.PropertyChanged
End Class
以下是功能（有更多处理来获取项目集合，但我怀疑它是否真的相关：
Private Sub LoadList(colSuivi as ObservableCollection(Of SuiviProductionLite)
LstInfoEtape.ItemsSource = colSuivi
End Sub
Private Sub Border_MouseDown(sender As System.Object, e As System.Windows.Input.MouseButtonEventArgs)
Dim oBorder As Border
Dim oEtapeLite As DAL.ContratProcessusEtapeLite
Select Case e.Source.GetType.ToString
Case "System.Windows.Controls.TextBlock"
Dim oTxt As TextBlock = e.Source
Dim oGrid As Grid = oTxt.Parent
_oCurBorderDet = oGrid.Parent
Case "System.Windows.Controls.Border"
Dim oBrd As Border = e.Source
_oCurBorderDet = e.Source
End Select
If Not _oCurBorderDet.DataContext.GetType().FullName.Equals("MS.Internal.NamedObject") Then
oEtapeLite = _oCurBorderDet.DataContext
oEtapeLite.Selected = True
End If
End Sub
当我进行一些跟踪时，我知道当我点击我的UI时，两个PropertyChanged事件都会被调用。如果我做一个手册“Items.Refresh”，我也可以看到UI被更改，但我想删除手动刷新，因为它刷新了所有内容，而不仅仅是刚刚修改过的项目，当面对大量数据时，需要更多的时间。
答案 0 :(得分：1)
我看到一个问题
Public Property IdClientContratSequenceTravail() As Long
Get
Return _lngIdSequenceTravail
End Get
Set(ByVal value As Long)
_lngIdSequenceTravail = value
NotifyPropertyChanged("IdSequence")
End Set
End Property
通知中的名称错误