如何更改日期選擇器所選擇的日期的文字顏色（白色）

Question

如何在XAML攝氏度＃更改日期選擇器所選擇的日期顏色（白色）

Answer 1

您需要修改的DatePicker的日曆的CalendarDayButton的控件模板：

<DatePicker> 
    <DatePicker.Resources> 
     <Color x:Key="YourColor">Red</Color> 
    </DatePicker.Resources> 
    <DatePicker.CalendarStyle> 
     <Style TargetType="Calendar"> 
      <Setter Property="CalendarDayButtonStyle"> 
       <Setter.Value> 
        <Style TargetType="{x:Type CalendarDayButton}"> 
         <Setter Property="MinWidth" Value="5"/> 
         <Setter Property="MinHeight" Value="5"/> 
         <Setter Property="FontSize" Value="10"/> 
         <Setter Property="HorizontalContentAlignment" Value="Center"/> 
         <Setter Property="VerticalContentAlignment" Value="Center"/> 
         <Setter Property="Template"> 
          <Setter.Value> 
           <ControlTemplate TargetType="{x:Type CalendarDayButton}"> 
            <Grid> 
             <VisualStateManager.VisualStateGroups> 
              <VisualStateGroup x:Name="CommonStates"> 
               <VisualStateGroup.Transitions> 
                <VisualTransition GeneratedDuration="0:0:0.1"/> 
               </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> 
               <VisualState x:Name="Disabled"> 
                <Storyboard> 
                 <DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="HighlightBackground"/> 
                 <DoubleAnimation Duration="0" To=".35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="NormalText"/> 
                </Storyboard> 
               </VisualState> 
              </VisualStateGroup> 
              <VisualStateGroup x:Name="SelectionStates"> 
               <VisualStateGroup.Transitions> 
                <VisualTransition GeneratedDuration="0"/> 
               </VisualStateGroup.Transitions> 
               <VisualState x:Name="Unselected"/> 
               <VisualState x:Name="Selected"> 
                <Storyboard> 
                 <DoubleAnimation Duration="0" To=".75" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="SelectedBackground"/> 
                </Storyboard> 
               </VisualState> 
              </VisualStateGroup> 
              <VisualStateGroup x:Name="CalendarButtonFocusStates"> 
               <VisualStateGroup.Transitions> 
                <VisualTransition GeneratedDuration="0"/> 
               </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 GeneratedDuration="0"/> 
               </VisualStateGroup.Transitions> 
               <VisualState x:Name="Active"/> 
               <VisualState x:Name="Inactive"> 
                <Storyboard> 
                 <ColorAnimation Duration="0" To="#FF777777" Storyboard.TargetProperty="(TextElement.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="NormalText"/> 
                </Storyboard> 
               </VisualState> 
              </VisualStateGroup> 
              <VisualStateGroup x:Name="DayStates"> 
               <VisualStateGroup.Transitions> 
                <VisualTransition GeneratedDuration="0"/> 
               </VisualStateGroup.Transitions> 
               <VisualState x:Name="RegularDay"/> 
               <VisualState x:Name="Today"> 
                <Storyboard> 
                 <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="TodayBackground"/> 
                 <ColorAnimation Duration="0" To="{StaticResource YourColor}" Storyboard.TargetProperty="(TextElement.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="NormalText"/> 
                </Storyboard> 
               </VisualState> 
              </VisualStateGroup> 
              <VisualStateGroup x:Name="BlackoutDayStates"> 
               <VisualStateGroup.Transitions> 
                <VisualTransition GeneratedDuration="0"/> 
               </VisualStateGroup.Transitions> 
               <VisualState x:Name="NormalDay"/> 
               <VisualState x:Name="BlackoutDay"> 
                <Storyboard> 
                 <DoubleAnimation Duration="0" To=".2" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Blackout"/> 
                </Storyboard> 
               </VisualState> 
              </VisualStateGroup> 
             </VisualStateManager.VisualStateGroups> 
             <Rectangle x:Name="TodayBackground" Fill="#FFAAAAAA" Opacity="0" RadiusY="1" RadiusX="1"/> 
             <Rectangle x:Name="SelectedBackground" Fill="#FFBADDE9" Opacity="0" RadiusY="1" RadiusX="1"/> 
             <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"/> 
             <Rectangle x:Name="HighlightBackground" Fill="#FFBADDE9" Opacity="0" RadiusY="1" RadiusX="1"/> 
             <ContentPresenter x:Name="NormalText" TextElement.Foreground="#FF333333" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="5,1,5,1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/> 
             <Path x:Name="Blackout" Data="M8.1772461,11.029181 L10.433105,11.029181 L11.700684,12.801641 L12.973633,11.029181 L15.191895,11.029181 L12.844727,13.999395 L15.21875,17.060919 L12.962891,17.060919 L11.673828,15.256231 L10.352539,17.060919 L8.1396484,17.060919 L10.519043,14.042364 z" Fill="#FF000000" HorizontalAlignment="Stretch" Margin="3" Opacity="0" RenderTransformOrigin="0.5,0.5" Stretch="Fill" VerticalAlignment="Stretch"/> 
             <Rectangle x:Name="DayButtonFocusVisual" IsHitTestVisible="false" RadiusY="1" RadiusX="1" Stroke="#FF45D6FA" Visibility="Collapsed"/> 
            </Grid> 
           </ControlTemplate> 
          </Setter.Value> 
         </Setter> 
        </Style> 
       </Setter.Value> 
      </Setter> 
     </Style> 
    </DatePicker.CalendarStyle> 
</DatePicker>