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一個DataGrid標題組合框
我有一個DataGrid被定義爲這樣一個列：從數據綁定視圖模型
<Custom:DataGridTextColumn HeaderStyle="{StaticResource ComboBoxHeader}" Width="Auto" Header="Type" Binding="{Binding Path=Type}" IsReadOnly="True" />
的ComboBoxHeader風格是在資源字典定義爲這樣：
<Style x:Key="ComboBoxHeader" TargetType="{x:Type my:DataGridColumnHeader}">
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type my:DataGridColumnHeader}">
<ControlTemplate.Resources>
<Storyboard x:Key="ShowFilterControl">
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="filterComboBox" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:00" Value="{x:Static Visibility.Visible}"/>
<DiscreteObjectKeyFrame KeyTime="00:00:00.5000000" Value="{x:Static Visibility.Visible}"/>
</ObjectAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="filterComboBox" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="Transparent"/>
<SplineColorKeyFrame KeyTime="00:00:00.5000000" Value="White"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="HideFilterControl">
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="filterComboBox" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="00:00:00.4000000" Value="{x:Static Visibility.Collapsed}"/>
</ObjectAnimationUsingKeyFrames>
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="filterComboBox" Storyboard.TargetProperty="(UIElement.OpacityMask).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="Black"/>
<SplineColorKeyFrame KeyTime="00:00:00.4000000" Value="#00000000"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</ControlTemplate.Resources>
<my:DataGridHeaderBorder x:Name="dataGridHeaderBorder" Margin="0" VerticalAlignment="Top" Height="31" IsClickable="{TemplateBinding CanUserSort}" IsHovered="{TemplateBinding IsMouseOver}" IsPressed="{TemplateBinding IsPressed}" SeparatorBrush="{TemplateBinding SeparatorBrush}" SeparatorVisibility="{TemplateBinding SeparatorVisibility}" SortDirection="{TemplateBinding SortDirection}" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.ColumnSpan="1">
<Grid x:Name="grid" Width="Auto" Height="Auto" RenderTransformOrigin="0.5,0.5">
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform/>
<TranslateTransform/>
</TransformGroup>
</Grid.RenderTransform>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="contentPresenter"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
ContentStringFormat="{TemplateBinding ContentStringFormat}"
ContentTemplate="{TemplateBinding ContentTemplate}">
<ContentPresenter.Content>
<MultiBinding Converter="{StaticResource headerConverter}">
<MultiBinding.Bindings>
<Binding ElementName="filterComboBox" Path="Text" />
<Binding RelativeSource="{RelativeSource TemplatedParent}" Path="Content" />
</MultiBinding.Bindings>
</MultiBinding>
</ContentPresenter.Content>
</ContentPresenter>
<ComboBox ItemsSource="{Binding Path=Types}" x:Name="filterComboBox" VerticalAlignment="Center" HorizontalAlignment="Right" MinWidth="20" Height="Auto" OpacityMask="Black" Visibility="Collapsed" Text="" Grid.Column="0" Grid.ColumnSpan="1"/>
</Grid>
</my:DataGridHeaderBorder>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Trigger.EnterActions>
<BeginStoryboard x:Name="ShowFilterControl_BeginStoryboard" Storyboard="{StaticResource ShowFilterControl}"/>
<StopStoryboard BeginStoryboardName="HideFilterControl_BeginShowFilterControl"/>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard x:Name="HideFilterControl_BeginShowFilterControl" Storyboard="{StaticResource HideFilterControl}"/>
<StopStoryboard BeginStoryboardName="ShowFilterControl_BeginStoryboard"/>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF0067AD" Offset="1"/>
<GradientStop Color="#FF003355" Offset="0.5"/>
<GradientStop Color="#FF78A8C9" Offset="0"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="Foreground" Value="White"/>
<Setter Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#D8000000" Offset="0.664"/>
<GradientStop Color="#7F003355" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="BorderThickness" Value="1,1,1,0"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="5,0"/>
</Style>
由於你可以看到，我試圖將組合框的ItemsSource綁定到類型，但這不起作用。該列表位於我的ViewModel中，正在應用於我的頁面，我將如何指定該資源字典中的此樣式，以便將其綁定到ViewModel中的源代碼。