Liste des articles dans listview selon les groupes, les données sont extraites de la collection observable

Question

i hav une classe qui stocke les informations de fichier avec namelist comme itz ObservableCollection

Importations System.Collections.ObjectModel

Classe publique NameList hérite ObservableCollection (Of FileInfo)

' Methods 
Public Sub New() 
    MyBase.Add(New FileInfo("Willa", "Cather", "warning", "err 1")) 
    MyBase.Add(New FileInfo("Isak", "Dinesen", "warning", "err 1")) 
    MyBase.Add(New FileInfo("Victor", "Hugo", "warning", "err 1")) 
    MyBase.Add(New FileInfo("Jules", "Verne", "warning", "err 3")) 
    MyBase.Add(New FileInfo("Victor", "Hugo", "warning", "err 1")) 
    MyBase.Add(New FileInfo("Jules", "Verne", "warning", "err 3")) 
End Sub 

End Class

public Classe FileInfo

Public _name As String 
Public _path As String 
Public _image As String 
Public _errorGrp As String 

Public Property ImageIcon() As String 
    Get 
     Return _image 
    End Get 
    Set(ByVal value As String) 
     _image = value 
    End Set 
End Property 

Public Property PathFile() As String 
    Get 
     Return _path 
    End Get 
    Set(ByVal value As String) 
     _path = value 
    End Set 
End Property 

Public Property Name() As String 
    Get 
     Return _name 
    End Get 
    Set(ByVal value As String) 
     _name = value 
    End Set 
End Property 

Public Property ErrorGroup As String 
    Get 
     Return _errorGrp 
    End Get 
    Set(ByVal value As String) 
     _errorGrp = value 
    End Set 
End Property 

Public Sub New(ByVal fileName As String, ByVal filePath As String, ByVal image As String, ByVal errorGrp As String) 
    Name = fileName 
    PathFile = filePath 
    ImageIcon = image 
    ErrorGroup = errorGrp 
End Sub 

End Class

je dois lier cela à l'élément listview de XAML qui seront regroupées selon errorGroup code i que j'ai essayé est

<Window.Resources > 
    <mydata:NameList x:Key="NameListData"/> 

    <!-- <DataTemplate x:Key="IconListViewItem" > 
     <StackPanel Orientation="Horizontal" > 
      <Image Source="/listViewGroupin;component/Images/ViewType.jpg" Height="19" Width="25" ></Image> 
      <TextBlock Foreground="DarkBlue" Text="{Binding ImageIcon}"/> 
      <TextBlock Foreground="DarkBlue" Text="{Binding Name}"/> 
     </StackPanel> 
    </DataTemplate>--> 

    <CollectionViewSource x:Key='src' 
         Source="{Binding Source={StaticResource NameListData}}"> 
     <CollectionViewSource.GroupDescriptions> 
      <!-- <PropertyGroupDescription PropertyName="ErrorGroup" />--> 
      <PropertyGroupDescription PropertyName="ErrorGroup"/> 
     </CollectionViewSource.GroupDescriptions> 
    </CollectionViewSource> 

</Window.Resources> 
<Grid> 
    <ListView ItemsSource="{Binding Source={StaticResource src}}" 
     IsSynchronizedWithCurrentItem="True" > 
     <ListView.GroupStyle > 
      <GroupStyle > 
       <GroupStyle.ContainerStyle> 
        <Style TargetType="{x:Type GroupItem}"> 
         <Setter Property="Margin" Value="0,0,0,5"/> 
         <Setter Property="Template"> 
          <Setter.Value> 
           <ControlTemplate TargetType="{x:Type GroupItem}"> 

            <GroupBox BorderBrush="Transparent" > 
             <GroupBox.Header > 
              <StackPanel Orientation="Horizontal" > 

               <TextBlock Text="{Binding Name}" 
           Margin="5,0,0,0" Width="100"/> 
               <Border Height=".2" Width="300" Background="Blue" ></Border> 
              </StackPanel> 
             </GroupBox.Header> 
            </GroupBox> 
           </ControlTemplate> 
          </Setter.Value> 
         </Setter> 
        </Style> 
       </GroupStyle.ContainerStyle> 
      </GroupStyle> 
     </ListView.GroupStyle> 

     <ListView.ItemContainerStyle> 
      <Style TargetType="{x:Type ListViewItem}"> 
       <Setter Property="BorderThickness" Value="1" /> 
       <Setter Property="Width" Value="Auto" /> 
       <Setter Property="FontSize" Value="10.4" /> 
      </Style> 
     </ListView.ItemContainerStyle> 

     <ListView.View > 
      <GridView AllowsColumnReorder="False"> 
       <GridViewColumn Width=" 250" Header="File" DisplayMemberBinding="{Binding Name }"> 
       </GridViewColumn> 
       <GridViewColumn Header="Path" Width="350" DisplayMemberBinding="{Binding PathFile}"> 
       </GridViewColumn> 
       <GridViewColumn Header="Error" Width="350" DisplayMemberBinding="{Binding ErrorGroup}"> 
       </GridViewColumn> 
      </GridView> 
     </ListView.View> 
    </ListView> 
</Grid> 

il me donne seulement groupes de noms et groupes, mais pas l'élément aidez-moi s'il vous plaît

Answer 1

Vous avez défini votre ListView.GroupStyle comme GroupBox. GroupBox est un HeaderedContentControl. Vous avez défini l'en-tête du groupe, mais vous devez également définir un espace réservé pour les éléments -

<GroupBox.Content> 
    <ItemsPresenter /> 
</GroupBox.Content>