我想为全局样式资源中的DataGrid
添加一个MouseBinding
,以便每DataGrid
触发基本ViewModel
中定义的"EditCommand"。我尝试的方式如下所示。但是,DataGrid
没有显示 - 这是有道理的,因为ContentPresenter
是空的。我必须添加什么,以显示应用InputBindings
的常规DataGrid
?
<Style x:Key="StandardTabelle" TargetType="{x:Type DataGrid}">
<Setter Property="Margin" Value="5"/>
<Setter Property="Background" Value="White"/>
<Setter Property="AlternatingRowBackground" Value="#ebecec"/>
<Setter Property="FontSize" Value="12" />
<Setter Property="RowHeight" Value="24"/>
<Setter Property="CanUserAddRows" Value="False"/>
<Setter Property="CanUserDeleteRows" Value="False"/>
<Setter Property="CanUserReorderColumns" Value="False"/>
<Setter Property="CanUserResizeRows" Value="False"/>
<Setter Property="CanUserResizeColumns" Value="False"/>
<Setter Property="IsReadOnly" Value="True" />
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGrid}">
<ContentPresenter>
<!--What goes here to show the regular content?-->
<ContentPresenter.InputBindings>
<MouseBinding Gesture="LeftDoubleClick" Command="{Binding DataContext.EditCommand}" />
</ContentPresenter.InputBindings>
</ContentPresenter>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
您需要定义一个完整的ControlTemplate
。您可以通过右键单击 Visual Studio 中设计模式下的DataGrid
并选择"编辑模板->编辑副本"来复制默认模板,然后根据您的要求对其进行编辑,例如:
<Style x:Key="StandardTabelle" TargetType="{x:Type DataGrid}">
<Setter Property="Margin" Value="5"/>
<Setter Property="Background" Value="White"/>
<Setter Property="AlternatingRowBackground" Value="#ebecec"/>
<Setter Property="FontSize" Value="12" />
<Setter Property="RowHeight" Value="24"/>
<Setter Property="CanUserAddRows" Value="False"/>
<Setter Property="CanUserDeleteRows" Value="False"/>
<Setter Property="CanUserReorderColumns" Value="False"/>
<Setter Property="CanUserResizeRows" Value="False"/>
<Setter Property="CanUserResizeColumns" Value="False"/>
<Setter Property="IsReadOnly" Value="True" />
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGrid}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="True">
<ScrollViewer x:Name="DG_ScrollViewer" Focusable="false">
<ScrollViewer.Template>
<ControlTemplate TargetType="{x:Type ScrollViewer}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Button Command="{x:Static DataGrid.SelectAllCommand}" Focusable="false" Style="{DynamicResource {ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly={x:Type DataGrid}}}" Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.All}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}" Width="{Binding CellsPanelHorizontalOffset, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<DataGridColumnHeadersPresenter x:Name="PART_ColumnHeadersPresenter" Grid.Column="1" Visibility="{Binding HeadersVisibility, ConverterParameter={x:Static DataGridHeadersVisibility.Column}, Converter={x:Static DataGrid.HeadersVisibilityConverter}, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<ScrollContentPresenter x:Name="PART_ScrollContentPresenter" CanContentScroll="{TemplateBinding CanContentScroll}" Grid.ColumnSpan="2" Grid.Row="1">
<ScrollContentPresenter.InputBindings>
<MouseBinding Gesture="LeftDoubleClick" Command="{Binding DataContext.EditCommand}" />
</ScrollContentPresenter.InputBindings>
</ScrollContentPresenter>
<ScrollBar x:Name="PART_VerticalScrollBar" Grid.Column="2" Maximum="{TemplateBinding ScrollableHeight}" Orientation="Vertical" Grid.Row="1" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportHeight}"/>
<Grid Grid.Column="1" Grid.Row="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding NonFrozenColumnsViewportHorizontalOffset, RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ScrollBar x:Name="PART_HorizontalScrollBar" Grid.Column="1" Maximum="{TemplateBinding ScrollableWidth}" Orientation="Horizontal" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}"/>
</Grid>
</Grid>
</ControlTemplate>
</ScrollViewer.Template>
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
不能只向 XAML 中现有模板中的 en 元素添加InputBinding
,而不定义完整的自定义模板。可能有更好的方法来做你正在尝试做的事情,例如使用@Andy建议的附加行为。