我正在使用自定义Datagrid，我想向DatagridRow添加属性。我不知道该怎么做。 我想我会创建一个自定义dataGridRow，但我不能在我的自定义DataGrid中使用它。错误讯息：
用于“DataGridRowEx”类型的样式无法应用于类型 “DataGridRow
这是我的自定义DataGridRow的XAML代码：
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyDataGridRow">
<Style x:Key="{x:Type local:DataGridRowEx}" TargetType="{x:Type local:DataGridRowEx}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:DataGridRowEx}">
<Border x:Name="DGR_Border"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
SnapsToDevicePixels="True">
<Border.Background>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Offset="0" Color="#AAFFFFAA" />
<GradientStop Offset="1" Color="#AAFFD455" />
</LinearGradientBrush>
</Border.Background>
<SelectiveScrollingGrid>
<SelectiveScrollingGrid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</SelectiveScrollingGrid.ColumnDefinitions>
<SelectiveScrollingGrid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</SelectiveScrollingGrid.RowDefinitions>
<DataGridCellsPresenter Grid.Column="1"
ItemsPanel="{TemplateBinding ItemsPanel}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
<DataGridDetailsPresenter Grid.Row="1"
Grid.Column="1"
SelectiveScrollingGrid.SelectiveScrollingOrientation="{Binding AreRowDetailsFrozen,
ConverterParameter={x:Static SelectiveScrollingOrientation.Vertical},
Converter={x:Static DataGrid.RowDetailsScrollingConverter},
RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}"
Visibility="{TemplateBinding DetailsVisibility}" />
<DataGridRowHeader Grid.RowSpan="2"
SelectiveScrollingGrid.SelectiveScrollingOrientation="Vertical"
Visibility="{Binding HeadersVisibility,
ConverterParameter={x:Static DataGridHeadersVisibility.Row},
Converter={x:Static DataGrid.HeadersVisibilityConverter},
RelativeSource={RelativeSource AncestorType={x:Type DataGrid}}}" />
</SelectiveScrollingGrid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
这是我自定义DataGrid的XAML代码
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyDataGrid"
xmlns:myDataGridRow="clr-namespace:MyDataGridRow;assembly=MyDataGridRow">
<LinearGradientBrush x:Key="HeaderBackgroundBrush" EndPoint="1,.6" StartPoint="1,0">
<GradientStop Color="#8FABB5" Offset="0" />
<GradientStop Color="#9FBEC9" Offset="0.7" />
<GradientStop Color="#CDEFFB" Offset="1" />
</LinearGradientBrush>
<LinearGradientBrush
x:Key="HeaderBackgroundOpacityMask"
StartPoint="0,0"
EndPoint="0,1">
<GradientStop Color="#FFFFFFFF" Offset="0"/>
<GradientStop Color="#FFFFFFFF" Offset="0.667"/>
<GradientStop Color="#00FFFFFF" Offset="1"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="RowBackgroundSelectedBrush" StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#4F8CC7" Offset="0" />
<GradientStop Color="#1C4B7C" Offset="0.7" />
<GradientStop Color="#042D5B" Offset="1" />
</LinearGradientBrush>
<SolidColorBrush x:Key="DataGridHorizontalLinesBrush" Color="Black" />
<SolidColorBrush x:Key="ForeignColorSelectTextBrush" Color="WhiteSmoke" />
<Style x:Key="ColumnHeaderGripperStyle" TargetType="{x:Type Thumb}">
<Setter Property="Width" Value="2"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Cursor" Value="SizeWE"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border Padding="{TemplateBinding Padding}"
Background="{TemplateBinding Background}"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DataGridCellStyle" TargetType="{x:Type DataGridCell}">
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderBrush" Value="Transparent" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Border Background="Transparent" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="0" SnapsToDevicePixels="True">
<ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" Margin="3"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DatagridColumnHeaderCustomTemplateStyle" TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="MinWidth" Value="0" />
<Setter Property="MinHeight" Value="30" />
<Setter Property="Foreground" Value="Navy" />
<Setter Property="Cursor" Value="Hand" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="DataGridColumnHeader">
<Grid Name="Root">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border x:Name="BackgroundBorder" BorderThickness="0,0,1,1"
Background="{StaticResource HeaderBackgroundBrush}"
BorderBrush="{x:Static SystemColors.ActiveBorderBrush}"
Grid.ColumnSpan="2" />
<ContentPresenter Margin="6,3,6,3" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Path x:Name="SortArrow" Visibility="Collapsed" Data="M0,0 L1,0 0.5,1 z" Stretch="Fill"
Grid.ColumnSpan="2" Width="8" Height="6" Fill="Olive" Margin="0,0,0,2"
VerticalAlignment="Bottom" RenderTransformOrigin="0.5,0.4" />
<Rectangle Width="1" Fill="Black" HorizontalAlignment="Right" Grid.ColumnSpan="2" />
<Thumb x:Name="PART_LeftHeaderGripper" HorizontalAlignment="Left"
Style="{StaticResource ColumnHeaderGripperStyle}"/>
<Thumb x:Name="PART_RightHeaderGripper" HorizontalAlignment="Right"
Style="{StaticResource ColumnHeaderGripperStyle}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="BackgroundBorder" Property="Background" Value="#CDEFFB" />
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="BackgroundBorder" Value="#4079B2" />
</Trigger>
<Trigger Property="SortDirection" Value="Ascending">
<Setter TargetName="SortArrow" Property="Visibility" Value="Visible"/>
<Setter TargetName="SortArrow" Property="RenderTransform">
<Setter.Value>
<RotateTransform Angle="180"/>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="SortDirection" Value="Descending">
<Setter TargetName="SortArrow" Property="Visibility" Value="Visible"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="DataGridRowStyle" TargetType="{x:Type myDataGridRow:DataGridRowEx}">
<Style.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent"/>
<SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent"/>
<SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="WhiteSmoke"/>
</Style.Resources>
<Setter Property="MinHeight" Value="25"/>
<Setter Property="AllowDrop" Value="True"/>
<Setter Property="Background" Value="Transparent"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Linen"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True"/>
<Condition Property="IsFocused" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="{StaticResource RowBackgroundSelectedBrush}"/>
<Setter Property="Foreground" Value="{StaticResource ForeignColorSelectTextBrush}"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True"/>
<Condition Property="IsFocused" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="#AD855C"/>
<Setter Property="Foreground" Value="{StaticResource ForeignColorSelectTextBrush}"/>
</MultiTrigger>
</Style.Triggers>
</Style>
<Style x:Key="{x:Type local:DataGridEx}" TargetType="{x:Type local:DataGridEx}">
<Setter Property="HeadersVisibility" Value="All" />
<Setter Property="RowStyle" Value="{StaticResource DataGridRowStyle}" />
<Setter Property="CellStyle" Value="{StaticResource DataGridCellStyle}" />
<Setter Property="ColumnHeaderStyle" Value="{StaticResource DatagridColumnHeaderCustomTemplateStyle}" />
<Setter Property="AutoGenerateColumns" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:DataGridEx}">
<Border x:Name="DG_FullBorder" SnapsToDevicePixels="True" Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}">
<ScrollViewer x:Name="DG_ScrollViewer" Focusable="False">
<ScrollViewer.Template>
<ControlTemplate TargetType="{x:Type ScrollViewer}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Button Width="{Binding Path=CellsPanelHorizontalOffset, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type DataGrid}}}" Focusable="False"
Command="{x:Static DataGrid.SelectAllCommand}">
<Button.Visibility>
<Binding Path="HeadersVisibility" RelativeSource="{RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type DataGrid}}">
<Binding.ConverterParameter>
<DataGridHeadersVisibility>All</DataGridHeadersVisibility>
</Binding.ConverterParameter>
</Binding>
</Button.Visibility>
<Button.Template>
<ControlTemplate TargetType="{x:Type Button}">
<Grid>
<Rectangle Fill="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" x:Name="Border" SnapsToDevicePixels="True"/>
<Polygon Fill="#FF000000" Stretch="Uniform" HorizontalAlignment="Right" Margin="8,8,3,3" x:Name="Arrow" VerticalAlignment="Bottom" Opacity="0.15" Points="0,10 10,10 10,0"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Stroke" TargetName="Border" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Fill" TargetName="Border" Value="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Visibility" TargetName="Arrow" Value="Collapsed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
<DataGridColumnHeadersPresenter x:Name="PART_ColumnHeadersPresenter" Grid.Column="1">
<DataGridColumnHeadersPresenter.Visibility>
<Binding Path="HeadersVisibility" RelativeSource="{RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type DataGrid}}">
<Binding.ConverterParameter>
<DataGridHeadersVisibility>Column</DataGridHeadersVisibility>
</Binding.ConverterParameter>
</Binding>
</DataGridColumnHeadersPresenter.Visibility>
</DataGridColumnHeadersPresenter>
<ScrollContentPresenter x:Name="PART_ScrollContentPresenter" Grid.ColumnSpan="2" Grid.Row="1" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" ContentTemplate="{TemplateBinding ContentTemplate}" CanContentScroll="{TemplateBinding CanContentScroll}" CanHorizontallyScroll="False" CanVerticallyScroll="False"/>
<ScrollBar x:Name="PART_VerticalScrollBar" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Grid.Column="2" Grid.Row="1" Orientation="Vertical" ViewportSize="{TemplateBinding ViewportHeight}" Maximum="{TemplateBinding ScrollableHeight}" Value="{Binding Path=VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}"/>
<Grid Grid.Column="1" Grid.Row="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{Binding Path=NonFrozenColumnsViewportHorizontalOffset, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type DataGrid}}}"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ScrollBar x:Name="PART_HorizontalScrollBar" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Grid.Column="1" Orientation="Horizontal" ViewportSize="{TemplateBinding ViewportWidth}" Maximum="{TemplateBinding ScrollableWidth}" Value="{Binding Path=HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}"/>
</Grid>
</Grid>
</ControlTemplate>
</ScrollViewer.Template>
<Border x:Name="DG_ContentBorder" SnapsToDevicePixels="True" Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"
Padding="{TemplateBinding Padding}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
</ScrollViewer>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
非常感谢！
答案 0 :(得分：2)
我怀疑您仍在为DataGridEx的行使用System.Windows.Controls.DataGridRow类型。要使用自己的DataGridRowEx类型的实例，必须覆盖DataGridEx类中的GetContainerForItemOverride（）方法：
public class DataGridRowEx : DataGridRow
{
// you can add any custom dependency property here
}
public class DataGridEx : DataGrid
{
//...
protected override DependencyObject GetContainerForItemOverride()
{
return new DataGridRowEx();
}
}