为了根据当前的 Item 类型ItemTemplates
在我的两个之间切换,我实现了一个. 我通过将它添加到. 但是如果我设置一个断点,它永远不会被调用。我尝试了一切,没有任何效果。ListView
DataTemplateSelector
Binding
ListView
public class ListViewTemplateSelector : DataTemplateSelector
{
public DataTemplate SectionTemplate { get; set; }
public DataTemplate EntryTemplate { get; set; }
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
if (item is Section)
{
return SectionTemplate;
}
if (item is Entry)
{
return EntryTemplate;
}
return base.SelectTemplate(item, container);
}
}
XAML:
<ListView DataContext="{Binding ElementName=This}" x:Name="list" Margin="200,25,0,0" ItemsSource="{Binding CurrentSelection}" ItemTemplateSelector="{StaticResource TemplateSelector}">
<ListView.View>
<GridView>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding ID}" Width="100" />
<GridViewColumn Header="Value" DisplayMemberBinding="{Binding Value}" Width="300" />
</GridView>
</ListView.View>
</ListView>
<DataTemplate x:Key="sectionTemplate">
<StackPanel Orientation="Horizontal">
<Image Width="16" Height="16" Source="\Icons\blue-folder.png" />
<TextBlock Text="{Binding ID}" Margin="5,0,0,0" />
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="entryTemplate">
<StackPanel Orientation="Horizontal">
<Image Width="16" Height="16" Source="\Icons\ui-text-field-medium.png" />
<TextBlock Text="{Binding ID}" Margin="5,0,0,0" />
</StackPanel>
</DataTemplate>
<sdk:ListViewTemplateSelector x:Key="TemplateSelector" SectionTemplate="{StaticResource sectionTemplate}" EntryTemplate="{StaticResource entryTemplate}" />
有人知道如何解决这个问题吗?
谢谢R