C# 在WPF中，如何获取控件模板中的命令以绑定到父级中的属性？
我对WPF比较陌生，有时它会让我头晕目眩。但是，我确实喜欢它背后的强大功能，尤其是与MVVM模型一起使用时C# 在WPF中，如何获取控件模板中的命令以绑定到父级中的属性？,c#,.net,wpf,controltemplate,commandbinding,C#,.net,Wpf,Controltemplate,Commandbinding,我对WPF比较陌生，有时它会让我头晕目眩。但是，我确实喜欢它背后的强大功能，尤其是与MVVM模型一起使用时 <Style TargetType="{x:Type m:SelectionFieldControl}"> <Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" /> <Setter Property="Template"> &l
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
控制模板按钮ControlTemplateControlTemplate按钮的command属性。基本上，它是一个组合框
，右侧有一个按钮
，允许用户弹出搜索对话框。由于该控件可能会多次出现在usercontrol上，因此我需要能够将每个控件潜在地绑定到不同的命令（搜索产品、搜索客户等）
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
然而，我一直不知道如何做到这一点
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
下面是一些XAML示例：
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
我想我可以通过做这样的事情来实现它：
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Button Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type SelectionFieldControl}}, Path=ShowSearchCommand}" Margin="2" />
但它不起作用
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
任何帮助都将不胜感激。Doh
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
这确实有效。问题是，我的依赖项属性在注册属性时没有将UIPropertyMetadata用于属性元数据
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
公共ICommand showsearch命令
{
获取{return（ICommand）GetValue（ShowSearchCommandProperty）；}
set{SetValue（ShowSearchCommandProperty，value）；}
}
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
public static readonly DependencyProperty ShowSearchCommandProperty =
DependencyProperty.Register("ShowSearchCommand", typeof(ICommand),
typeof(SelectionFieldControl),
new UIPropertyMetadata(OnShowSearchCommandChanged));
static void OnShowSearchCommandChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
}
<Style TargetType="{x:Type m:SelectionFieldControl}">
<Setter Property="LookupTemplate" Value="{StaticResource LookupTemplate}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type m:SelectionFieldControl}">
<Border BorderThickness="{TemplateBinding Border.BorderThickness}"
Padding="{TemplateBinding Control.Padding}"
BorderBrush="{TemplateBinding Border.BorderBrush}"
Background="{TemplateBinding Panel.Background}"
SnapsToDevicePixels="True"
Focusable="False">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="0"
SharedSizeGroup="{Binding LabelShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="Auto"
SharedSizeGroup="{Binding WidgetsShareSizeGroupName,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:BaseFieldControl}}}" />
</Grid.ColumnDefinitions>
<!-- Customized Value Part -->
<ComboBox x:Name="PART_Value"
Grid.Column="1"
Margin="4,2,0,1"
SelectedValue="{Binding Path=SelectionField.Value,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
IsEnabled="{Binding Field.IsNotReadOnly,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
Visibility="{Binding Field.IsInEditMode, Converter={StaticResource TrueToVisible},
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type m:SelectionFieldControl}}}"
FontFamily="{StaticResource FontFamily_Default}" FontSize="11px">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsVirtualizing="True"
VirtualizationMode="Recycling"/>
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
</ComboBox>
<StackPanel Grid.Column="2"
Orientation="Horizontal"
Name="PART_Extra"
Focusable="False">
<ContentControl Name="PART_LookupContent"
Template="{Binding LookupTemplate,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type m:SelectionFieldControl}}}"
Focusable="False"/>
</StackPanel>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>