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c# - WPF Datepicker 日历按钮不起作用(使用修改后的模板)

转载 作者:太空宇宙 更新时间:2023-11-03 10:56:34 30 4
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如果这已经存在,我提前道歉(我进行了高级搜索,但找不到这个具体问题。)

我正在使用自定义 WPF Datepicker 日历模板(实际上只是更改颜色),但现在我的按钮不起作用。它会弹出日历,但从那时起没有任何效果,我错过了什么吗?下面是代码:

<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"
xmlns:primitives="clr-namespace:Microsoft.Windows.Controls.Primitives;assembly=WPFToolkit" >
<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="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 Calendar}">
<StackPanel x:Name="PART_Root" HorizontalAlignment="Center">
<primitives:CalendarItem x:Name="PART_CalendarItem" Style="{DynamicResource CalenderStyleNew}" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

<Style x:Key="CalenderStyleNew"
TargetType="primitives:CalendarItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="primitives:CalendarItem">
<ControlTemplate.Resources>
<!-- Start: Data template for header button -->
<DataTemplate x:Key="DayTitleTemplate">
<TextBlock
FontWeight="Bold"
FontFamily="Verdana"
FontSize="9.5"
Foreground="Black"
HorizontalAlignment="Center"
Text="{Binding}"
Margin="0,6,0,6"
VerticalAlignment="Center"/>
</DataTemplate>
<!-- End: Data template for header button -->
<DataTemplate x:Key="MonthTitleTemplate">
<TextBlock
FontWeight="Medium"
FontFamily="Verdana"
FontSize="9.5"
Foreground="Red"
HorizontalAlignment="Center"
Text="{Binding}"
Margin="0,10,0,6"
VerticalAlignment="Center"/>
</DataTemplate>
</ControlTemplate.Resources>

<Grid 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 Storyboard.TargetName="PART_DisabledVisual" Storyboard.TargetProperty="Opacity" To="1" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>

<Border
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="1">

<!-- This Brush is new -->
<Border.Background>
<LinearGradientBrush StartPoint="0 0" EndPoint="0 1">
<GradientStop Offset="0" Color="#FFE4EAF0" />
<GradientStop Offset="0.5" Color="#FFECF0F4" />
<GradientStop Offset="1" Color="#FFECF0F4" />
</LinearGradientBrush>
</Border.Background>

<Border CornerRadius="1" BorderBrush="#FFFFFFFF" BorderThickness="2">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>

<Grid.Resources>
<!-- Start: Previous button template -->
<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 Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To=".5" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Margin="14,-6,0,0" Height="10" Width="6" VerticalAlignment="Center" HorizontalAlignment="Left" Stretch="Fill" Data="M288.75,232.25 L288.75,240.625 L283,236.625 z">
<Path.Fill>
<SolidColorBrush x:Name="TextColor" Color="#FF333333" />
</Path.Fill>
</Path>
</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 Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="#FF73A9D8" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Opacity" To=".5" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle Fill="#11E5EBF1" Stretch="Fill" Opacity="1"/>
<Grid>
<Path Margin="0,-6,14,0" Height="10" Width="6" VerticalAlignment="Center" HorizontalAlignment="Right" Stretch="Fill" Data="M282.875,231.875 L282.875,240.375 L288.625,236 z">
<Path.Fill>
<SolidColorBrush x:Name="TextColor" Color="#FF333333" />
</Path.Fill>
</Path>
</Grid>
</Grid>
</ControlTemplate>

<!-- End: Next button template -->

<!-- Start: Header button template -->
<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 Storyboard.TargetName="TextColor" Storyboard.TargetProperty="Color" To="Blue" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="buttonContent" Storyboard.TargetProperty="Opacity" To=".5" Duration="0" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>

<!-- This Border is new -->
<Border Padding="12 0"
CornerRadius="6">
<Border.Background>
<LinearGradientBrush StartPoint="0 0" EndPoint="0 1">
<GradientStop Offset="0" Color="#FF73A9D8" />
<GradientStop Offset="1" Color="#FF73A9E8" />
</LinearGradientBrush>
</Border.Background>

<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>
</Border>
</Grid>
</ControlTemplate>
<!-- End: Header button template -->

</Grid.Resources>

<!-- Start: Previous button content -->
<Button x:Name="PART_PreviousButton"
Grid.Row="0" Grid.Column="0"
Template="{StaticResource PreviousButtonTemplate}"
Height="20" Width="28"
HorizontalAlignment="Left"
Focusable="False"
/>
<!-- End: Previous button content -->

<!-- Start: Header button content -->
<Button x:Name="PART_HeaderButton"
Grid.Row="0" Grid.Column="1"
Template="{StaticResource HeaderButtonTemplate}"
HorizontalAlignment="Center" VerticalAlignment="Center"
Height="28" Width="110"
FontWeight="Bold" FontSize="10.5"
Focusable="False"
/>
<!-- End: Header button content -->

<!-- Start: Next button content -->
<Button x:Name="PART_NextButton"
Grid.Row="0" Grid.Column="2"
Height="20" Width="28"
HorizontalAlignment="Right"
Template="{StaticResource NextButtonTemplate}"
Focusable="False"
/>
<!-- End: Next button content -->

<!-- Start: Month Content Grid -->
<Grid x:Name="PART_MonthView" Grid.Row="1" Grid.ColumnSpan="3" Visibility="Visible" Margin="6,-1,6,6">
<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.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>
<!-- End: Month Content Grid -->

<!-- End: Year Content Grid -->
<Grid x:Name="PART_YearView" Grid.Row="1" Grid.ColumnSpan="3" Visibility="Hidden" Margin="6,-3,7,6">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
</Grid>
<!-- End: Year Content Grid -->
</Grid>
</Border>
</Border>
<Rectangle x:Name="PART_DisabledVisual" Opacity="0" Visibility="Collapsed" Stretch="Fill" StrokeThickness="1" RadiusX="2" RadiusY="2" Stroke="{StaticResource DisabledColor}" Fill="{StaticResource DisabledColor}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="PART_DisabledVisual" Property="Visibility" Value="Visible" />
</Trigger>
<DataTrigger Value="Year">
<DataTrigger.Binding>
<Binding Path="DisplayMode">
<Binding.RelativeSource>
<RelativeSource Mode="FindAncestor" AncestorType="{x:Type Controls:Calendar}" />
</Binding.RelativeSource>
</Binding>
</DataTrigger.Binding>
<Setter TargetName="PART_MonthView" Property="Visibility" Value="Hidden" />
<Setter TargetName="PART_YearView" Property="Visibility" Value="Visible" />
</DataTrigger>
<DataTrigger Value="Decade">
<DataTrigger.Binding>
<Binding Path="DisplayMode">
<Binding.RelativeSource>
<RelativeSource Mode="FindAncestor" AncestorType="{x:Type Controls:Calendar}" />
</Binding.RelativeSource>
</Binding>
</DataTrigger.Binding>
<Setter TargetName="PART_MonthView" Property="Visibility" Value="Hidden" />
<Setter TargetName="PART_YearView" Property="Visibility" Value="Visible" />
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

注意:我在应用程序级别设置了这个资源字典,并且我将 calendarstyle 属性全局绑定(bind)到所有日期选择器。

这是在应用级资源字典中:

<Style TargetType="{x:Type DatePicker}">
<Setter
Property="CalendarStyle"
Value="{StaticResource CalendarStyle1}" />
</Style>

这是引用资源字典的地方(如果我做错了,我是 xaml 的新手

<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary
Source="ResourceDictionary/CustomCalendar.xaml" />
<ResourceDictionary
Source="ResourceDictionary/GlobalStyles.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>

最佳答案

您的问题出在您的样式 TargetTypes 上。如果您注意到您的日历样式定义为:

<Style x:Key="CalendarStyle1" TargetType="{x:Type Calendar}">

CalendarItem 的样式定义为:

<Style x:Key="CalenderStyleNew" TargetType="primitives:CalendarItem">

问题是 Calendar 类型来自标准 System.Windows.Controls 包,但 CalendarItem 来自命名空间 Microsoft.Windows.Controls(即您定义为 primitives 的 wpftoolkit 命名空间) .因此,要解决此问题,您必须在样式中使用所有 System.Windows.Controls 或使用所有 Microsoft.Windows.Controls 命名空间。

我已解决您的问题以使用所有 Microsoft.Windows.Controls:

<Style x:Key="CalendarStyle1" TargetType="{x:Type Controls:Calendar}">

全局样式必须更改为:

<Style TargetType="{x:Type Controls:DatePicker}">
<Setter
Property="CalendarStyle"
Value="{StaticResource CalendarStyle1}" />
</Style>

要实例化 DatePicker,您必须使用正确的:

<Controls:DatePicker />

<DatePicker />

如果您不从 WpfToolkit 命名空间引用它,它将没有您的自定义样式。

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关于c# - WPF Datepicker 日历按钮不起作用(使用修改后的模板),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19305922/

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