【发布时间】：2016-08-13 23:04:49
【问题描述】：
当 MaxWidth 或 Width 等属性发生更改时，UWP 中的 TimePicker 控件不会重新调整大小，是否需要设置其他属性，或者我只需要找到解决方法？
【问题讨论】：
标签： win-universal-app uwp-xaml
【发布时间】：2016-08-13 23:04:49
【问题描述】：
经过一番调查，您似乎只能使用“Padding”属性更改 TimePicker 的大小。
【讨论】：
您需要更改 TimePicker 的默认样式。例如，请在您的 Page.Ressources 中添加以下样式。我更改的唯一值是将 MaxWidth 更改为 800 - 默认值为 456。然后，您应该能够使用 Width 属性最大化您的控件。
<Page.Resources>
<!-- Default style for Windows.UI.Xaml.Controls.TimePicker -->
<Style TargetType="TimePicker">
<Setter Property="IsTabStop" Value="False" />
<Setter Property="MinWidth" Value="242" />
<Setter Property="MaxWidth" Value="800" />
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" />
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" />
<Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseHighBrush}"/>
<Setter Property="HorizontalAlignment" Value="Left" />
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TimePicker">
<StackPanel x:Name="LayoutRoot" Margin="{TemplateBinding Padding}">
<StackPanel.Resources>
<Style x:Key="TimePickerFlyoutButtonStyle" TargetType="Button">
<Setter Property="UseSystemFocusVisuals" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseMediumBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlPageBackgroundAltMediumBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseMediumLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlBackgroundBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListAccentLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused" />
<VisualState x:Name="PointerFocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="ContentPresenter"
BorderBrush="{ThemeResource SystemControlForegroundBaseMediumLowBrush}"
Background="{ThemeResource SystemControlBackgroundAltMediumLowBrush}"
BorderThickness="2"
Content="{TemplateBinding Content}"
Foreground="{TemplateBinding Foreground}"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch"
AutomationProperties.AccessibilityView="Raw"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</StackPanel.Resources>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HeaderContentPresenter"
Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FirstColumnDivider"
Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SecondColumnDivider"
Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="HeaderContentPresenter"
x:DeferLoadStrategy="Lazy"
Visibility="Collapsed"
Content="{TemplateBinding Header}"
ContentTemplate="{TemplateBinding HeaderTemplate}"
Margin="0,0,0,8"
Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}"
AutomationProperties.AccessibilityView="Raw" />
<Button x:Name="FlyoutButton"
Style="{StaticResource TimePickerFlyoutButtonStyle}"
Foreground="{TemplateBinding Foreground}"
Background="{TemplateBinding Background}"
IsEnabled="{TemplateBinding IsEnabled}"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch">
<Grid x:Name="FlyoutButtonContentGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" x:Name="FirstTextBlockColumn" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" x:Name="SecondTextBlockColumn" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" x:Name="ThirdTextBlockColumn" />
</Grid.ColumnDefinitions>
<Border x:Name="FirstPickerHost" Grid.Column="0">
<TextBlock x:Name="HourTextBlock" TextAlignment="Center" Padding="0,3,0,5" FontFamily="{TemplateBinding FontFamily}" FontWeight="{TemplateBinding FontWeight}" FontSize="{TemplateBinding FontSize}" AutomationProperties.AccessibilityView="Raw"/>
</Border>
<Rectangle x:Name="FirstColumnDivider" Fill="{ThemeResource SystemControlForegroundBaseLowBrush}" HorizontalAlignment="Center" Width="2" Grid.Column="1" />
<Border x:Name="SecondPickerHost" Grid.Column="2">
<TextBlock x:Name="MinuteTextBlock" TextAlignment="Center" Padding="0,3,0,5" FontFamily="{TemplateBinding FontFamily}" FontWeight="{TemplateBinding FontWeight}" FontSize="{TemplateBinding FontSize}" AutomationProperties.AccessibilityView="Raw"/>
</Border>
<Rectangle x:Name="SecondColumnDivider" Fill="{ThemeResource SystemControlForegroundBaseLowBrush}" HorizontalAlignment="Center" Width="2" Grid.Column="3" />
<Border x:Name="ThirdPickerHost" Grid.Column="4">
<TextBlock x:Name="PeriodTextBlock" TextAlignment="Center" Padding="0,3,0,5" FontFamily="{TemplateBinding FontFamily}" FontWeight="{TemplateBinding FontWeight}" FontSize="{TemplateBinding FontSize}" AutomationProperties.AccessibilityView="Raw"/>
</Border>
</Grid>
</Button>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
【讨论】：
-
注意。您可以在 C:\Program Files (x86)\Windows Kits\10\DesignTime\CommonConfiguration\Neutral\UAP\10.0.10240.0\Generic 中找到所有默认样式
我找到了一个非常简单的解决方法来调整 Timepicker 或 DatePicker 的大小。我只是在它周围放了一个 ViewBox 并将我想要的宽度和高度分配给 Viewbox。 Viewbox 会为您完成选取器控件的所有大小调整。简单的。完成。
【讨论】：
-
这是唯一可行的解决方案。以及非常简单的奖励积分。谢谢！
根据项目的目标 SDK 有不同的解决方法。
当项目目标为 Windows 10 1709 10.0.16299.0 时，设置 TimePicker 的 MinWidth 属性足以减小其宽度。
当项目以 Windows 10 1803 10.0.17763.0 为目标时，替换 App.xaml 文件中的默认 TimePickerThemeMinWidth 值即可：
<ResourceDictionary.ThemeDictionaries>
<ResourceDictionary x:Key="Default">
<x:Double x:Key="TimePickerThemeMinWidth">140</x:Double>
</ResourceDictionary>
<ResourceDictionary x:Key="Dark">
<x:Double x:Key="TimePickerThemeMinWidth">140</x:Double>
</ResourceDictionary>
<ResourceDictionary x:Key="Light">
<x:Double x:Key="TimePickerThemeMinWidth">140</x:Double>
</ResourceDictionary>
</ResourceDictionary.ThemeDictionaries>
【讨论】：