【发布时间】：2015-12-10 15:45:34
【问题描述】：
我正在为 WPF C# 使用 ExtendedToolkit。具体来说，我使用的是 DateTimePicker，我尝试更改此元素的字体大小，但它不会更改用于选择日期的附加日历的大小；
有没有办法在 ExtendedToolkit 中更改它的 FontSize 使其看起来更大？
【问题讨论】：
标签： c# wpf wpf-extended-toolkit
【发布时间】：2015-12-10 15:45:34
【问题描述】：
我需要日历控件来显示更大的数字，并且由于 DateTimePicker 使用日历，因此这里适用相同的解决方案。
日历具有用于自定义日期字段的 CalendarDayButtonStyle 属性。唯一要更改的属性是CalendarDayButton.FontSize：
<xctk:DateTimePicker VerticalAlignment="Top">
<xctk:DateTimePicker.Resources>
<Style TargetType="Calendar">
<Setter Property="CalendarDayButtonStyle">
<Setter.Value>
<Style TargetType="CalendarDayButton"
BasedOn="{StaticResource {x:Type CalendarDayButton}}">
<Setter Property="FontSize" Value="16"/>
</Style>
</Setter.Value>
</Setter>
</Style>
</xctk:DateTimePicker.Resources>
</xctk:DateTimePicker>
【讨论】：
您可以通过 Blend 工具为 Calendar 和 CalendarItem 生成模板和样式的副本，并覆盖默认的 FontSize。我通过 Blend 生成的副本是：
<Style x:Key="CalendarStyle1" TargetType="{x:Type 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="#FFFFFFFF" 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 Calendar}">
<StackPanel x:Name="PART_Root" HorizontalAlignment="Center">
<CalendarItem x:Name="PART_CalendarItem" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Style="{DynamicResource CalendarItemStyle1}"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="CalendarItemStyle1" TargetType="{x:Type CalendarItem}">
<Setter Property="Margin" Value="0,3,0,3"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CalendarItem}">
<ControlTemplate.Resources>
<DataTemplate x:Key="{x:Static CalendarItem.DayTitleTemplateResourceKey}">
<TextBlock Foreground="#FF333333" FontWeight="Bold" FontSize="9.5" FontFamily="Verdana" HorizontalAlignment="Center" Margin="0,6,0,6" Text="{Binding}" VerticalAlignment="Center"/>
</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="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PART_DisabledVisual"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="1">
<Border BorderBrush="#FFFFFFFF" BorderThickness="2" CornerRadius="1">
<Grid>
<Grid.Resources>
<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="0" To="#FF73A9D8" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" Storyboard.TargetName="path"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="(Shape.Fill).(Brush.Opacity)" Storyboard.TargetName="path"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Opacity="1" Stretch="Fill"/>
<Grid>
<Path x:Name="path" Data="M288.75,232.25 L288.75,240.625 L283,236.625 z" Fill="#FF333333" HorizontalAlignment="Left" Height="10" Margin="14,-6,0,0" Stretch="Fill" VerticalAlignment="Center" Width="6"/>
</Grid>
</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="0" To="#FF73A9D8" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" Storyboard.TargetName="path"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="(Shape.Fill).(Brush.Opacity)" Storyboard.TargetName="path"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Opacity="1" Stretch="Fill"/>
<Grid>
<Path x:Name="path" Data="M282.875,231.875 L282.875,240.375 L288.625,236 z" Fill="#FF333333" HorizontalAlignment="Right" Height="10" Margin="0,-6,14,0" Stretch="Fill" VerticalAlignment="Center" Width="6"/>
</Grid>
</Grid>
</ControlTemplate>
<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="0" To="#FF73A9D8" Storyboard.TargetProperty="(TextElement.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="buttonContent"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="buttonContent"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="buttonContent" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" TextElement.Foreground="#FF333333" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1,4,1,9" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</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" Grid.Column="0" Focusable="False" HorizontalAlignment="Left" Height="20" Grid.Row="0" Template="{StaticResource PreviousButtonTemplate}" Width="28"/>
<Button x:Name="PART_HeaderButton" Grid.Column="1" FontWeight="Bold" Focusable="False" FontSize="10.5" HorizontalAlignment="Center" Grid.Row="0" Template="{StaticResource HeaderButtonTemplate}" Height="100" VerticalAlignment="Center"/>
<Button x:Name="PART_NextButton" Grid.Column="2" Focusable="False" HorizontalAlignment="Right" Height="20" Grid.Row="0" Template="{StaticResource NextButtonTemplate}" Width="28"/>
<Grid x:Name="PART_MonthView" Grid.ColumnSpan="3" HorizontalAlignment="Center" Margin="6,-1,6,6" Grid.Row="1" Visibility="Visible">
<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" Grid.ColumnSpan="3" HorizontalAlignment="Center" Margin="6,-3,7,6" Grid.Row="1" Visibility="Hidden">
<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="{StaticResource DisabledColor}" Opacity="0" RadiusY="2" RadiusX="2" Stretch="Fill" Stroke="{StaticResource DisabledColor}" StrokeThickness="1" 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, AncestorType={x:Type 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, AncestorType={x:Type 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>
【讨论】：
试试这个。
第 1 步：
为日历创建样式
<Style x:Key="styleCalendar" TargetType="{x:Type Calendar}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Calendar}">
<!-- Wrapping in ViewBox will enlarge calendar of that size.-->
<Viewbox Height="400"
Width="400">
<CalendarItem x:Name="CalendarItem"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"/>
</Viewbox>
</ControlTemplate>
</Setter.Value>
</Setter>
第 2 步：
为您的 DatePicker 应用样式。
<DatePicker CalendarStyle="{StaticResource styleCalendar}"
Height="25" HorizontalAlignment="Left" Name="datePicker1" Width="120" />
【讨论】：