以下是适用于所有XAML向导的内容：WPF工具包Calendar控件（2009年6月）似乎有错误。修改日历的ControlTemplate，特别是PART_CalendarItem时，错误才会出现。
在此消息的末尾，我已将XAML包含在（Blend 3.0）窗口中，该窗口声明Calendar并为其指定ControlTemplate。控件模板是Calendar控件模板的未修改副本，我通过编辑Calendar控件和PART_CalendarItem控件的控件模板（在Blend中）的副本来获得。
在XAML的第78行（标记为下面的注释“EXCEPTION”）中，VisualStateManager在控件的TextColor标题上为鼠标悬停分配Month。但是，在控件模板中，文本颜色分配给保存Grid按钮的Month，而不是月份按钮本身。当为日历分配未修改的控件模板时，这会导致VS2008和Blend 3.0中的异常，如下面的XAML中所示。
我无法弄清楚如何修改控件模板以消除错误，而不是删除鼠标悬停突出显示。我想保留它，但我看不到TextColor属性应该定位的内容。有什么建议？谢谢你的帮助！
XAML标记
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Custom="http://schemas.microsoft.com/wpf/2008/toolkit"
x:Class="WpfApplication1.MainWindow"
x:Name="Window"
Title="MainWindow"
Width="640" Height="480">
<Window.Resources>
<Style x:Key="CalendarStyle1" TargetType="{x:Type Custom:Calendar}">
<Setter Property="Foreground" Value="#FF333333"/>
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFE4EAF0" Offset="0"/>
<GradientStop Color="#FFECF0F4" Offset="0.16"/>
<GradientStop Color="#FFFCFCFD" Offset="0.16"/>
<GradientStop Color="White" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA3AEB9" Offset="0"/>
<GradientStop Color="#FF8399A9" Offset="0.375"/>
<GradientStop Color="#FF718597" Offset="0.375"/>
<GradientStop Color="#FF617584" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Custom:Calendar}">
<StackPanel x:Name="PART_Root" HorizontalAlignment="Center">
<Custom:CalendarItem x:Name="PART_CalendarItem" Style="{DynamicResource CalendarItemStyle1}" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="CalendarItemStyle1" TargetType="{x:Type Custom:CalendarItem}">
<Setter Property="Margin" Value="0,3"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Custom:CalendarItem}">
<ControlTemplate.Resources>
<DataTemplate x:Key="DayTitleTemplate">
<TextBlock HorizontalAlignment="Center" Margin="0,6" VerticalAlignment="Center" FontFamily="Verdana" FontSize="9.5" FontWeight="Bold" Foreground="#FF333333" Text="{Binding}"/>
</DataTemplate>
</ControlTemplate.Resources>
<Grid x:Name="PART_Root">
<Grid.Resources>
<SolidColorBrush x:Key="DisabledColor" Color="#A5FFFFFF"/>
</Grid.Resources>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="PART_DisabledVisual" Storyboard.TargetProperty="Opacity" To="1"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1">
<Border BorderBrush="White" BorderThickness="2" CornerRadius="1">
<Grid>
<Grid.Resources>
<ControlTemplate x:Key="HeaderButtonTemplate" TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/> <!-- EXCEPTION -->
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="buttonContent" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="buttonContent" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1,4,1,9" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" TextElement.Foreground="#FF333333" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
</Grid>
</ControlTemplate>
<ControlTemplate x:Key="NextButtonTemplate" TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Fill="#FF333333" Stretch="Fill" HorizontalAlignment="Right" Margin="0,-6,14,0" VerticalAlignment="Center" Width="6" Height="10" Data="M282.875,231.875L282.875,240.375 288.625,236z"/>
</Grid>
</Grid>
</ControlTemplate>
<ControlTemplate x:Key="PreviousButtonTemplate" TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Fill="#FF333333" Stretch="Fill" HorizontalAlignment="Left" Margin="14,-6,0,0" VerticalAlignment="Center" Width="6" Height="10" Data="M288.75,232.25L288.75,240.625 283,236.625z"/>
</Grid>
</Grid>
</ControlTemplate>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button x:Name="PART_PreviousButton" HorizontalAlignment="Left" Width="28" Height="20" Focusable="False" Grid.Column="0" Grid.Row="0">
<Button.Template>
<ControlTemplate TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Fill="#FF333333" Stretch="Fill" HorizontalAlignment="Left" Margin="14,-6,0,0" VerticalAlignment="Center" Width="6" Height="10" Data="M288.75,232.25L288.75,240.625 283,236.625z"/>
</Grid>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
<Button x:Name="PART_HeaderButton" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="10.5" FontWeight="Bold" Focusable="False" Grid.Column="1" Grid.Row="0" Template="{DynamicResource ButtonControlTemplate1}"/>
<Button x:Name="PART_NextButton" HorizontalAlignment="Right" Width="28" Height="20" Focusable="False" Grid.Column="2" Grid.Row="0">
<Button.Template>
<ControlTemplate TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Fill="#FF333333" Stretch="Fill" HorizontalAlignment="Right" Margin="0,-6,14,0" VerticalAlignment="Center" Width="6" Height="10" Data="M282.875,231.875L282.875,240.375 288.625,236z"/>
</Grid>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
<Grid x:Name="PART_MonthView" Margin="6,-1,6,6" Visibility="Visible" Grid.ColumnSpan="3" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
</Grid>
<Grid x:Name="PART_YearView" Margin="6,-3,7,6" Visibility="Hidden" Grid.ColumnSpan="3" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
</Grid>
</Grid>
</Border>
</Border>
<Rectangle x:Name="PART_DisabledVisual" Fill="#A5FFFFFF" Stretch="Fill" Stroke="#A5FFFFFF" StrokeThickness="1" RadiusX="2" RadiusY="2" Opacity="0" Visibility="Collapsed"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Visibility" TargetName="PART_DisabledVisual" Value="Visible"/>
</Trigger>
<DataTrigger Binding="{Binding DisplayMode, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type Custom:Calendar}}}" Value="Year">
<Setter Property="Visibility" TargetName="PART_MonthView" Value="Hidden"/>
<Setter Property="Visibility" TargetName="PART_YearView" Value="Visible"/>
</DataTrigger>
<DataTrigger Binding="{Binding DisplayMode, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type Custom:Calendar}}}" Value="Decade">
<Setter Property="Visibility" TargetName="PART_MonthView" Value="Hidden"/>
<Setter Property="Visibility" TargetName="PART_YearView" Value="Visible"/>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ControlTemplate x:Key="ButtonControlTemplate1" TargetType="{x:Type Button}">
<Grid Cursor="Hand">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Duration="00:00:00" Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="00:00:00" Storyboard.TargetName="buttonContent" Storyboard.TargetProperty="Opacity" To="0.5"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="buttonContent" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1,4,1,9" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" TextElement.Foreground="#FF333333" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
</Grid>
</ControlTemplate>
</Window.Resources>
<Grid x:Name="LayoutRoot">
<Custom:Calendar HorizontalAlignment="Left" VerticalAlignment="Top" Style="{DynamicResource CalendarStyle1}"/>
</Grid>
</Window>
答案 0 :(得分：5)
我们在工作中遇到了同样的事情。这似乎不是WPFToolkit中的一个错误，而是Expression Blend存在一个问题，因为制作原始模板的人有点棘手。
首先，抓住默认模板。如果您下载源代码，它们将在Toolkit-Release / Calendar / Themes / Generic.xaml中。源可以在WPF Toolkit CodePlex站点上找到。 http://wpf.codeplex.com/
CalendarItemTemplate有这种设置：
<Style TargetType="primitives:CalendarItem">
...
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="primitives:CalendarItem">
...
<Grid Name="PART_Root" >
<Border
...
<Border CornerRadius="1" BorderBrush="#FFFFFFFF" BorderThickness="2">
<Grid>
<Grid.Resources>
<ControlTemplate x:Key="HeaderButtonTemplate" TargetType="Button">
...
<Button x:Name="PART_HeaderButton" Template="{StaticResource HeaderButtonTemplate}"
...
这是原始的HeaderButtonTemplate：
<ControlTemplate x:Key="HeaderButtonTemplate" TargetType="Button">
<Grid Cursor="Hand">
<vsm:VisualStateManager.VisualStateGroups>
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualState x:Name="Normal" />
<vsm:VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8" Duration="0" />
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="buttonContent" Storyboard.TargetProperty="Opacity" To=".5" Duration="0" />
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<ContentPresenter
x:Name="buttonContent"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="1,4,1,9"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<TextElement.Foreground>
<SolidColorBrush x:Name="TextColor" Color="#FF333333"/>
</TextElement.Foreground>
</ContentPresenter>
</Grid>
</ControlTemplate>
关注我们的部分在这里：
<ContentPresenter
x:Name="buttonContent"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="1,4,1,9"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<TextElement.Foreground>
<SolidColorBrush x:Name="TextColor" Color="#FF333333"/>
</TextElement.Foreground>
</ContentPresenter>
注意实例化SolidColorBrush的TextElement附加属性setter。这是故事板所针对的命名画笔。
当您在Blend中执行“编辑模板副本”时，它将内联一些模板，以便直接设置标题按钮模板，而不是包含在网格资源中。
<Button x:Name="PART_HeaderButton" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="10.5" FontWeight="Bold" Focusable="False" Grid.Column="1" Grid.Row="0">
<Button.Template>
<ControlTemplate TargetType="{x:Type Button}">
<Grid Cursor="Hand">
我不知道为什么会这样做，当我编辑模板的副本时，我期待模板的实际副本。我想我明白有时一个模板是从外部引用的，但在这种情况下它不是 - 而且即使它是完全复制它并将其添加到style / controltemplate资源似乎更为谨慎。更糟糕的是，作为重新处理的一部分，Blend会修改模板中的contentpresenter定义，将其转换为：
<ContentPresenter x:Name="buttonContent"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="1,4,1,9"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Content="{TemplateBinding Content}"
TextElement.Foreground="#FF333333" />
因此，换句话说，没有更多名称刷，故事板目标现在不正确。
幸运的是，修复很简单 - 使用原始模板作为起点。麻烦的是，混合不喜欢它并且不会显示，因为由于某种原因它只能在contentpresenter上将此附加属性设置为开始标记的一部分，而不是在扩展模式或其他任何调用模式中。当然，很可能以另一种更易混合的方式复制功能。
编辑：这是一种快速修改模板以使其可混合的方法。它真的是一个黑客，虽然大多是无害的。我并不主张通常做这样的事情，但似乎确实很好。
<ControlTemplate x:Key="HeaderButtonTemplate" TargetType="Button">
<Grid Cursor="Hand">
<vsm:VisualStateManager.VisualStateGroups>
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualState x:Name="Normal" />
<vsm:VisualState x:Name="MouseOver">
<Storyboard>
<ColorAnimation Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8" Duration="0" />
</Storyboard>
</vsm:VisualState>
<vsm:VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="buttonContent" Storyboard.TargetProperty="Opacity" To=".5" Duration="0" />
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<!-- A dummy Rectangle that is essentially a container for the TextColor brush -->
<Rectangle Width="0" Height="0">
<Rectangle.Fill>
<SolidColorBrush x:Name="TextColor" Color="#FF333333"/>
</Rectangle.Fill>
</Rectangle>
<ContentPresenter
x:Name="buttonContent"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="1,4,1,9"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
TextElement.Foreground="{Binding ElementName=TextColor}">
</ContentPresenter>
</Grid>
</ControlTemplate>
它的本质是将画笔作为另一个对象的一部分 - 技术上可见，如果太小而无法显示，然后对内容提醒器进行绑定 - 因为它是在开始标记中完成的，Blend不会抱怨。是的，我知道，这种气味，但它是原始模板中最小的重写，我可以看到它使它工作。