我创建了一个自定义的WPF控件。该控件作为一个包含多个区域的容器(因此可以像主页面一样工作)。
该控件的样式从单独的资源字典中在运行时加载,如下所示:
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/MyApp.Application;component/Themes/Theme.xaml" x:Name="theme"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>
我的自定义控件样式如下...
<Style TargetType="{x:Type shareduc:EditControlMaster}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type shareduc:EditControlMaster}">
<Grid>
<Grid.ColumnDefinitions></Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Border BorderBrush="{DynamicResource xxBorderBrush}"
BorderThickness="0,1,0,1" Background="White" Grid.Row="0">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
</Grid.RowDefinitions>
<ContentPresenter Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" Margin="10" Content="{TemplateBinding Image}" />
<ContentPresenter Grid.Row="0" Grid.Column="1" Margin="2" Content="{TemplateBinding Title}" />
<ContentPresenter Grid.Row="1" Grid.Column="1" Margin="2" Content="{TemplateBinding Abstract}" />
</Grid>
</Border>
<ContentPresenter Grid.Row="1" Margin="2" Content="{TemplateBinding Content}" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
问题在于此样式仅在运行时加载。 因此,在设计模式下,我的控件没有任何样式,也没有任何大小或布局。我该如何为设计模式下的控件设置默认样式?
更新: 我正在取得一些进展……似乎我可以指定一个默认主题来使用一个名为Themes\Generic.xaml的文件。这在一个小的示例项目中可以正常工作,但出于某种原因,当我在实际项目中执行相同的操作时,我的VS2008设计器会保持空白……帮帮忙?:(
请注意,我的自定义控件代码如下:
public partial class EditControlMaster : Control
{
static EditControlMaster()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(EditControlMaster),
new FrameworkPropertyMetadata(typeof(EditControlMaster)));
}
public object Title
{
get { return (object)GetValue(TitleProperty); }
set { SetValue(TitleProperty, value); }
}
public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Title", typeof(object),
typeof(EditControlMaster), new UIPropertyMetadata());
public object Image
{
get { return (object)GetValue(ImageProperty); }
set { SetValue(ImageProperty, value); }
}
public static readonly DependencyProperty ImageProperty =
DependencyProperty.Register("Image", typeof(object),
typeof(EditControlMaster), new UIPropertyMetadata());
public object Abstract
{
get { return (object)GetValue(AbstractProperty); }
set { SetValue(AbstractProperty, value); }
}
public static readonly DependencyProperty AbstractProperty =
DependencyProperty.Register("Abstract", typeof(object),
typeof(EditControlMaster), new UIPropertyMetadata());
public object Content
{
get { return (object)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }
}
public static readonly DependencyProperty ContentProperty =
DependencyProperty.Register("Content", typeof(object),
typeof(EditControlMaster), new UIPropertyMetadata());
}