C# MaterialDesignInXamlToolkit元素主机日期选择器已选择/当前日期未正确显示

对于生产应用程序，我们希望在Windows窗体应用程序中的ElementHost内显示日期选择器，但我们遇到的问题是，SelectedDate和CurrentDate不可读，因为不会显示数字

我们在MaterialDesignInxalToolkit的xaml风格中找不到这个问题，因为我们没有足够的经验

它已经有了一个问题，但似乎没有人回答或看一看。

---

复制的bug也有问题。

通过适当的样式/模板定制，可以实现您想要的行为。这种情况的关键是使用

CalendarDayButton

的

ControlTemplate

中的关键帧来简单地消除

对象动画。此外，为了应用这种定制，需要考虑的是<代码>日历日期按钮> />代码> <代码>日历> />代码> <代码>数据包> /代码>。这是一个教科书案例，其中
BasedOn
非常方便

下面是实现这一技巧的XAML：

<Style x:Key="MyCalendarDayButton"
       TargetType="CalendarDayButton"
       BasedOn="{StaticResource MaterialDesignCalendarDayButton}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type CalendarDayButton}">
                <Grid>
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0:0:0.1" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Normal"/>
                            <VisualState x:Name="MouseOver">
                                <Storyboard>
                                    <DoubleAnimation Duration="0" To="0.5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="HighlightBackground"/>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Pressed">
                                <Storyboard>
                                    <DoubleAnimation Duration="0" To="0.5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="HighlightBackground"/>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="SelectionStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Unselected"/>
                            <VisualState x:Name="Selected">
                                <Storyboard>
                                    <DoubleAnimation Duration="0" To="0.5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectedBackground"/>
                                    <!--
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.Foreground)" Storyboard.TargetName="NormalText">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{DynamicResource PrimaryHueMidForegroundBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    -->
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="CalendarButtonFocusStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="CalendarButtonFocused">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="DayButtonFocusVisual">
                                        <DiscreteObjectKeyFrame KeyTime="0">
                                            <DiscreteObjectKeyFrame.Value>
                                                <Visibility>Visible</Visibility>
                                            </DiscreteObjectKeyFrame.Value>
                                        </DiscreteObjectKeyFrame>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="CalendarButtonUnfocused">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="DayButtonFocusVisual">
                                        <DiscreteObjectKeyFrame KeyTime="0">
                                            <DiscreteObjectKeyFrame.Value>
                                                <Visibility>Collapsed</Visibility>
                                            </DiscreteObjectKeyFrame.Value>
                                        </DiscreteObjectKeyFrame>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="ActiveStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Active"/>
                            <VisualState x:Name="Inactive"/>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="DayStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="RegularDay"/>
                            <VisualState x:Name="Today">
                                <Storyboard>
                                    <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="TodayBackground"/>
                                    <!--
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.Foreground)" Storyboard.TargetName="NormalText">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{DynamicResource PrimaryHueLightForegroundBrush}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    -->
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="BlackoutDayStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="NormalDay"/>
                            <VisualState x:Name="BlackoutDay">
                                <Storyboard>
                                    <DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="HighlightingBorder"/>
                                    <DoubleAnimation Duration="0" To="0.38" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="NormalText"/>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Ellipse x:Name="TodayBackground" Fill="{DynamicResource PrimaryHueLightBrush}" Opacity="0"/>
                    <Ellipse x:Name="SelectedBackground" Fill="{DynamicResource PrimaryHueMidBrush}" Opacity="0"/>
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"/>
                    <Border x:Name="HighlightingBorder" Opacity="1">
                        <Ellipse x:Name="HighlightBackground" Fill="{DynamicResource PrimaryHueDarkBrush}" Opacity="0"/>
                    </Border>
                    <ContentPresenter x:Name="NormalText" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" TextElement.Foreground="{TemplateBinding Foreground}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="5,1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    <Ellipse x:Name="DayButtonFocusVisual" Opacity="0" Stroke="{DynamicResource PrimaryHueDarkBrush}" StrokeThickness="1" Visibility="Collapsed"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style x:Key="MyCalendarStyle" 
       TargetType="Calendar"
       BasedOn="{StaticResource MaterialDesignDatePickerCalendarPortrait}">
    <Setter Property="CalendarDayButtonStyle" Value="{StaticResource MyCalendarDayButton}"/>
</Style>

<Style x:Key="MyDatePickerStyle" 
       TargetType="DatePicker" 
       BasedOn="{StaticResource MaterialDesignDatePicker}">
    <Setter Property="CalendarStyle" Value="{StaticResource MyCalendarStyle}"/>
</Style>    


看得见的
崩溃

下面是如上所示的结果自定义样式与原始标准
MaterialDesign
样式之间的并列比较：


可以在上找到此示例项目的完整源代码解决方案。
您的Windows 10版本是什么？您的版本应该支持它-似乎有bug…首先，WPF应用程序也会出现这种情况，因此您在Winforms中托管它与此无关。这不是一个真正的bug，而是一个定制所需内容的问题。您提到的效果是由于对选定的
和当前的
视觉状态使用关键帧的
对象动画。只要把它评论出来就行了。建议您利用
BasedOn
，仅更改
ControlTemplate
，以减少其冗长性。我们在和上发布了完整的源代码解决方案。注意：有时VS XAML编辑器会出现一些“呜呜呜”声，并开始抛出无法解析的资源“abc”，其中“abc”是
材质设计
样式之一。我们处理它的方法是对文件进行一些“假”编辑，保存它，重新编译，然后一切正常。