컬렉션을 ListView의 ComboBox에 바인딩합니다.

Question

DataTemplate가 ComboBox이고 일부가 TextBox 인 ListView입니다. ComboBox은 CollectionViewSource에 매핑되는 Collection에 바인딩됩니다. ListView은 여러 행을 가질 수 있습니다.

문제는 하나의 ComboBox에서 항목을 선택하면 그들 모두를 변경한다는 것입니다. 나는 그들 모두가 동일한 내용으로 채워지기를 원하지만 독립적으로 설정할 수 있기를 바란다.

자료 섹션에는 다음이 포함

ListView는 다음과 같이 정의된다

<CollectionViewSource Source="{Binding ChildAccounts}" x:Key="ChildGroupedData"> 
     <CollectionViewSource.GroupDescriptions> 
      <PropertyGroupDescription PropertyName="group"/> 
     </CollectionViewSource.GroupDescriptions> 
    </CollectionViewSource> 

    <!-- Template for each child item in ListView --> 
    <DataTemplate x:Key="ChildTemplate"> 
     <Grid> 
      <Grid.ColumnDefinitions>      
       <ColumnDefinition Width="90"/> 
       <ColumnDefinition Width="130"/> 
       <ColumnDefinition Width="90"/> 
       <ColumnDefinition Width="90"/> 
       <ColumnDefinition Width="90"/> 
       <ColumnDefinition Width="210"/> 
      </Grid.ColumnDefinitions>     
      <Label Grid.Column="0" Content="Account" HorizontalAlignment="Left" VerticalAlignment="Top" Foreground="{StaticResource CustomWhite}" FontSize="14" Width="80"/> 
      <ComboBox Grid.Column="1" SelectedValue="{Binding Path=accFrom}" ItemsSource="{Binding Source={StaticResource ChildGroupedData}}" ItemTemplate="{StaticResource AccountTemplate}" SelectedValuePath="ID" Width="120" Style="{StaticResource RoundedComboBox}" HorizontalAlignment="Left" VerticalAlignment="Center"> 
       <ComboBox.GroupStyle> 
        <GroupStyle ContainerStyle="{StaticResource CustomExpanderComboGroupItemStyle}" HeaderTemplate="{StaticResource GroupHeader}"/> 
       </ComboBox.GroupStyle> 
      </ComboBox> 
      <Label Grid.Column="2" Content="Amount" HorizontalAlignment="Left" VerticalAlignment="Top" Foreground="{StaticResource CustomWhite}" FontSize="14" Width="80"/> 
      <TextBox Grid.Column="3" Text="{Binding Path=amount, StringFormat='#,##0.00'}" Style="{StaticResource RoundedTextBox}" Width="80" HorizontalAlignment="Left" VerticalAlignment="Center"/> 
      <Label Grid.Column="4" Content="Comment" HorizontalAlignment="Left" VerticalAlignment="Top" Foreground="{StaticResource CustomWhite}" FontSize="14" Width="80"/> 
      <TextBox Grid.Column="5" Text="{Binding Path=comment}" Style="{StaticResource RoundedTextBox}" Width="200" HorizontalAlignment="Left" VerticalAlignment="Center"/> 
     </Grid> 
    </DataTemplate> 

    <!-- ListView template --> 
    <Style x:Key="ChildListViewStyle" TargetType="{x:Type ListView}"> 
     <Setter Property="ItemTemplate" Value="{DynamicResource ChildTemplate}"/> 
     <Setter Property="Background" Value="{StaticResource CustomBackground}"/> 
     <Setter Property="BorderThickness" Value="0"/> 
     <Setter Property="HorizontalAlignment" Value="Left"/> 
     <Setter Property="Margin" Value="10,10,10,10"/> 
     <Setter Property="VerticalAlignment" Value="Top"/> 
     <Setter Property="Padding" Value="0,0,50,0"/> 
     <Setter Property="FocusVisualStyle" Value="{x:Null}"/> 
     <Style.Resources> 
      <!-- Makes selection invisible when focus lost --> 
      <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="{StaticResource CustomBackgroundC}"/> 
     </Style.Resources> 
    </Style> 

:

<ListView Grid.Column="0" x:Name="lstChildren" Margin="20,30,0,0" ItemsSource="{Binding Path=Items}" Style="{StaticResource ChildListViewStyle}"/> 

편집 :

다음은 연관된 클래스에서 발견되는 다음

Imports System.Data 
Imports System.Data.OleDb 
Imports System.Collections.ObjectModel 
Imports System.ComponentModel 

Class ItemView 
Implements INotifyPropertyChanged 

Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged 

Private Sub NotifyPropertyChanged(ByVal info As String) 
    RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info)) 
End Sub 

.... 

Private _ChildAccounts As ObservableCollection(Of AccountEntry) 
Public Property ChildAccounts As ObservableCollection(Of AccountEntry) 
    Get 
     Return _ChildAccounts 
    End Get 
    Set(value As ObservableCollection(Of AccountEntry)) 
     _ChildAccounts = value 
    End Set 
End Property 

.... 

Private Sub ItemView_Initialized(sender As Object, e As EventArgs) Handles Me.Initialized 

    Dim dsacmd As OleDbDataAdapter 
    Dim dsa As New DataSet 
    Dim dva As DataView 
    Dim strSelect As String 

    Try 
     ' ** Open a connection to the database.   
     cn = New OleDbConnection(strConnection) 
     cn.Open() 

     Me.DataContext = Me 

     strSelect = "SELECT Accounts.ID, Accounts.deleted, Accounts.accType, Accounts.currency as curr, IIf([Currencies.ID]=1,Accounts.comment,Accounts.comment & "" ("" & Currencies.symbol & "")"") AS comment, Currencies.comment AS currS FROM Currencies INNER JOIN Accounts ON Currencies.ID = Accounts.currency" 
     dsacmd = New OleDbDataAdapter(strSelect, cn) 
     dsacmd.Fill(dsa, "Accounts") 
     dva = New DataView(dsa.Tables("Accounts")) 
     dva.RowFilter = "accType=" & cVirtual.ToString & " AND deleted=False" 
     dva.Sort = "curr, comment" 
     ChildAccounts = New ObservableCollection(Of AccountEntry)(dva.ToTable.AsEnumerable().[Select](Function(i) New [AccountEntry](i("ID"), i("currS").TrimEnd(" "), i("comment")))) 

.... 

Private Sub DisplayItem() 

    .... 

      strSelect = "" 
      Dim Relations As Collection(Of Relation) = GetRelations(ID) 
      For Each r As Relation In Relations 
       strSelect &= "ID=" & r.ID.ToString & " OR " 
      Next 
      If strSelect <> "" Then strSelect = "SELECT * FROM Items WHERE " & strSelect.Substring(0, strSelect.Length - 4) 
      If strSelect <> "" Then 
       dsrcmd = New OleDbDataAdapter(strSelect, cn) 
       dsr.Clear() 
       dsrcmd.Fill(dsr, "Items") 
       lstChildren.DataContext = dsr 
      End If 
.... 

Answer 1

CollectionViewSource을 DataTemplate으로 옮겨야합니다. 당신이 두 가지를 시도 할 수 있습니다 내 생각 같은 소스 컬렉션을 사용하는 모든 콤보-항목을 강제로 :

이

한 - 사용 상대 소스가 ListView의 DataContext

... 
<Grid.Resources> 
    <CollectionViewSource x:Key="ChildGroupedData" 
         Source="{Binding RelativeSource={RelativeSource FindAncestor, 
                     AncestorType={x:Type ListView}}, 
              Path=DataContext.ChildAccounts}"> 
    <CollectionViewSource.GroupDescriptions> 
     <PropertyGroupDescription PropertyName="group" /> 
    </CollectionViewSource.GroupDescriptions> 
    </CollectionViewSource> 
</Grid.Resources> 
... 

Update에서 ChildAccounts을 선택하기를 :

위의 방법은 This 견본을 조합하여 볼 수 있습니다. 우리가 ListBoxItem 당 새 컬렉션을 가지고 있지만 문제의 요청이 있었는지처럼 그들을 통해 공유되지 않도록 ChildAccount 그냥보기 모델의 ObservableCollection<T> 것을 참고입니다.

당신의 ChildAccounts 속성이 사실 인 경우는 ListBoxItem의 당 ChildAccounts 속성 객체를 가지고있는 "코멘트"속성, 그냥

<CollectionViewSource x:Key="ChildGroupedData" 
         Source="{Binding RelativeSource={RelativeSource FindAncestor, 
                     AncestorType={x:Type ListView}}, 
              Path=DataContext.ChildAccounts}"> 

에

<CollectionViewSource x:Key="ChildGroupedData" 
         Source="{Binding ChildAccounts}"> 

을 변경 말을 좋아하고 그것을 잘 작동합니다 . 그러나 이제는 ListBoxItem에 따라 ChildAccounts 컬렉션이 있으며 소스를 공유하지 않습니다.

주요 내용은 DataTemplate 안에 CollectionViewSource을 정의하는 것입니다. 첨부 된 샘플을 다운로드하여 직접 시험해보고 세부 사항을 확인하십시오.

두은 - 정적 변수

당신은 콤보 상자에 IsSynchronizedWithCurrentItem는 = "false"로 설정 추가 할 수 있습니다

... 
<Grid.Resources> 
    <CollectionViewSource x:Key="ChildGroupedData" 
         Source="{x:Static local:ChildAccounts}"> 
    <CollectionViewSource.GroupDescriptions> 
     <PropertyGroupDescription PropertyName="group" /> 
    </CollectionViewSource.GroupDescriptions> 
    </CollectionViewSource> 
</Grid.Resources> 
... 

Answer 2

로 ChildAccounts 되세요.