我在基础程序集中有一个控件,其中包含我想根据当前 DataContext 设置的内容。
为此,我尝试在调用程序集中使用资源和子类 DataTemplateSelector,如下所示。我最初的希望是调用子类 DataTemplateSelector,但事实并非如此。然后我尝试在调用程序集的资源字典中添加一个条目,使用相同的键但子类选择器,但这也没有完成。
有没有办法修复我必须使它工作的代码?有没有更好的策略来从调用程序集设置我的内容?
干杯,
贝里尔
用户控制(基本组件)
<UserControl
...
<Grid>
<Border Style="{StaticResource FilterPanelBorderStyle}">
<StackPanel Orientation="Horizontal" x:Name="myFilterPanel" >
***** <ContentControl x:Name="ctrlFilters" ContentTemplateSelector="{StaticResource filterControlsTemplateSelector}" /> ****
<Button x:Name="btnClearFilter" Style="{StaticResource FilterPanelClearButtonStyle}" />
<Label x:Name="lblStatus" Style="{StaticResource FilterPanelLabelStyle}" Content="{Binding Status}" />
</StackPanel>
</Border>
</Grid>
</UserControl>
资源和 DataTemplateSelector(基础程序集)
<views:FilterControlsTemplateSelector x:Key="filterControlsTemplateSelector"/>
<DataTemplate x:Key="defaultFilterContent">
<TextBlock>Replace ME with real filters!</TextBlock>
</DataTemplate>
public class FilterControlsTemplateSelector : DataTemplateSelector
{
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
var fe = container as FrameworkElement;
if (fe == null) return null;
return _GetDataTemplate(fe);
}
protected virtual DataTemplate _GetDataTemplate(FrameworkElement fe) {
var template = fe.FindResource("defaultFilterContent") as DataTemplate;
return template;
}
}
资源和选择器(调用程序集)
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Core.Presentation.Wpf;component/Themes/Generic.xaml" />
</ResourceDictionary.MergedDictionaries>
<local:PimFilterControlsTemplateSelector x:Key="filterControlsTemplateSelector"/>
<DataTemplate x:Key="pimFilterContent">
<Grid>
<Border Style="{StaticResource FilterPanelBorderStyle}">
<StackPanel Orientation="Horizontal" >
<cc:SearchTextBox
x:Name="stbLastNameFilter" Style="{StaticResource FilterPanelSearchTextBoxStyle}"
/>
<cc:SearchTextBox
x:Name="stbFirstNameFilter" Style="{StaticResource FilterPanelSearchTextBoxStyle}"
/>
</StackPanel>
</Border>
</Grid>
</DataTemplate>
public class PimFilterControlsTemplateSelector : FilterControlsTemplateSelector
{
protected override DataTemplate _GetDataTemplate(FrameworkElement fe)
{
var dc = fe.DataContext;
if (dc == null) return null;
DataTemplate result = null;
if (dc is PimMasterVm)
{
result = fe.FindResource("pimFilterContent") as DataTemplate;
}
else {
result = base._GetDataTemplate(fe);
}
return result;
}
}
应用程序字典设置(调用程序集)
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Parties.Presentation.Wpf;component/PimCommonResources.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>