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装订集 A. 控制领域的观点
原标题:Binding a CollectionViewSource in a ControlTemplate
  • 时间:2010-03-09 07:09:14
  •  标签:
  • wpf
  • xaml

我正在尝试创建一个ControlTemplate,它将把两个IQueryable(和其他一些东西)合并成一个CompositeCollection。

我在绑定CollectionViewSource.Source到模板时遇到了问题。看起来在资源部分中的 TemplateBinding 不支持。如何最好地规避这个限制?

代码示例如下:

页: 1

IQueryable Items1; // (DependencyProperty)
IQueryable Items2; // (DependencyProperty)

XAML (Extensible Application Markup Language):可扩展应用程序标记语言

  <ControlTemplate TargetType="{x:Type Components:Selector}">
    <ControlTemplate.Resources>
      <!-- The two bound properties below fail to bind -->
      <CollectionViewSource Source="{Binding Items1,RelativeSource={RelativeSource TemplatedParent}}" x:Key="Items1Key" />
      <CollectionViewSource Source="{Binding Items2, RelativeSource={RelativeSource TemplatedParent}}" x:Key="Items2Key"  />

      <CompositeCollection x:Key="collection">
        <CollectionContainer Collection="{Binding Source={StaticResource Items1Key}}" />
        <CollectionContainer Collection="{Binding Source={StaticResource Items2Key}}" />
      </CompositeCollection>
    </ControlTemplate.Resources>

    <ComboBox ItemsSource="{Binding Source={StaticResource collection}}" />

  </ControlTemplate>
问题回答

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