Question

我们有ListView和ComboBox。我在按钮点击时将数据绑定到listView。我想用选定的值显示组合框。当我们设置IsSynchronizedWithCurrentItem =“True”时它会更新组合框的所有值，但是当我们设置IsSynchronizedWithCurrentItem =“False”时，组合框不会显示选定的值。为什么？我使用MVVM模型为列表视图和组合框的绑定数据而不是硬编码。如果您有解决方案，请与我们分享。

<GridViewColumn Header="Part ID">
    <GridViewColumn.CellTemplate>
        <DataTemplate>
             <telerik:RadComboBox x:Name="PartIdListViewRadComboBox"  
                CanAutocompleteSelectItems="True" IsEditable="True"  
                Width="105" Height="30" Margin="4,4,4,4" 
                VerticalAlignment="Center"  StaysOpenOnEdit="False"  
                IsSynchronizedWithCurrentItem="False" 
                SelectedValue="{Binding Path=ProductID}"
                DisplayMemberPath="PartID" EmptyText="Part ID" 
                HorizontalAlignment="Left" 
                ItemsSource="{ Binding RelativeSource=
                              {RelativeSource FindAncestor,AncestorType={x:Type ListView}},
                              Path=DataContext.ProductModel.ListViewComboboxProductListCollection}"
                OpenDropDownOnFocus="True" 
                TextSearchMode="Contains" IsFilteringEnabled="True" 
                IsTextSearchEnabled="True">

                <!--
                <ie:Interaction.Triggers>
                    <ie:EventTrigger EventName="SelectionChanged">
                 -->
                       <!--
                       <si:CallMethodAction MethodName="SelectionChanged" 
                        TargetObject="{Binding}" /> -->
                        <!--
                       <ie:InvokeCommandAction Command="{Binding RelativeSource=
                          {RelativeSource FindAncestor,AncestorType={x:Type ListView}},
                          Path=DataContext.PartIdComboboxChangedComand}" 
                          CommandParameter="{Binding ElementName=PartIdListViewRadComboBox}"/>
                   </ie:EventTrigger>
               </ie:Interaction.Triggers>-->
            </telerik:RadComboBox>
       </DataTemplate>
   </GridViewColumn.CellTemplate>
</GridViewColumn>

Answer 1

我的最后一个想法是使用ItemTemplate：

<telerik:RadComboBox ... >
    <ComboBox.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Path=PartID}"/>
        </DataTemplate>
    </ComboBox.ItemTemplate>
    ...
</telerik:RadComboBox>

带有ComboBox的WPF ListView

1 个答案: