我已经安装了扩展 WPF 工具包，我正在尝试更改DateTimePicker时间选择器中的间隔（所以它是半小时而不是一小时）。我试过使用这里显示TimeInterval的属性，但不存在这样的属性。我究竟做错了什么？
xmlns:wpfTool="clr-namespace:Xceed.Wpf.Toolkit;assembly=Xceed.Wpf.Toolkit"
<wpfTool:DateTimePicker TimeInterval="00:30:00" Name="dateTimePicker1" HorizontalContentAlignment = "Center" VerticalContentAlignment="Center" HorizontalAlignment="Center" Height="50" Width="250" VerticalAlignment="Center" Margin="20,60,0,0"/>
DateTimePicker并且TimePicker是不公开相同属性的不同控件。
DateTimePicker没有用于自定义时间间隔的属性。在内部，它在其控件模板中包含 a TimePicker，但实际上并没有分配或公开其TimeInterval属性，正如您可以从GitHub 上的默认样式中看到的那样。
<local:TimePicker x:Name="PART_TimeUpDown"
Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"
Foreground="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"
Format="{TemplateBinding TimeFormat}"
FormatString="{TemplateBinding TimeFormatString}"
Kind="{Binding Kind, RelativeSource={RelativeSource TemplatedParent}}"
Value="{Binding Value, RelativeSource={RelativeSource TemplatedParent}}"
Minimum="{Binding Minimum, RelativeSource={RelativeSource TemplatedParent}}"
Maximum="{Binding Maximum, RelativeSource={RelativeSource TemplatedParent}}"
ClipValueToMinMax="{Binding ClipValueToMinMax, RelativeSource={RelativeSource TemplatedParent}}"
IsUndoEnabled="{Binding IsUndoEnabled, RelativeSource={RelativeSource TemplatedParent}}"
AllowSpin="{TemplateBinding TimePickerAllowSpin}"
Step="{TemplateBinding Step}"
ShowButtonSpinner="{TemplateBinding TimePickerShowButtonSpinner}"
Watermark="{TemplateBinding TimeWatermark}"
WatermarkTemplate="{TemplateBinding TimeWatermarkTemplate}"
Visibility="{TemplateBinding TimePickerVisibility}" />
您可以做的是复制并更改此默认样式并为该TimeInterval属性添加一个值。但是，这种风格的资源有很多依赖，所以最简单的方法是复制整个资源字典并对其进行调整，例如：
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:themes1="clr-namespace:Xceed.Wpf.Toolkit.Themes;assembly=Xceed.Wpf.Toolkit"
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit">
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Xceed.Wpf.Toolkit;component/Themes/Aero2/Common.xaml" />
<ResourceDictionary Source="pack://application:,,,/Xceed.Wpf.Toolkit;component/Themes/Aero2/Glyphs.xaml" />
</ResourceDictionary.MergedDictionaries>
<xctk:InverseBoolConverter x:Key="InverseBoolConverter" />
<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
<xctk:BorderThicknessConverter x:Key="BorderThicknessConverter" />
<DataTemplate x:Key="DefaultWatermarkTemplate">
<ContentControl Margin="0,0,3,0"
Content="{Binding}"
Focusable="False"
Foreground="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
</DataTemplate>
<Style x:Key="DateTimePickerToggleButtonStyle" TargetType="ToggleButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Grid SnapsToDevicePixels="True">
<xctk:ButtonChrome x:Name="ToggleButtonChrome"
CornerRadius="0"
RenderChecked="{Binding IsOpen, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=xctk:DateTimePicker}}"
RenderEnabled="{Binding IsEnabled, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=xctk:DateTimePicker}}"
RenderMouseOver="{TemplateBinding IsMouseOver}"
RenderPressed="{TemplateBinding IsPressed}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<ContentPresenter HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
<Grid x:Name="arrowGlyph"
Grid.Column="1"
Margin="5"
IsHitTestVisible="False">
<Path x:Name="Arrow"
Width="9"
Height="5"
Margin="0,1,0,0"
Data="{StaticResource DownArrowGeometry}"
Fill="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" />
</Grid>
</Grid>
</xctk:ButtonChrome>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Arrow" Property="Fill" Value="#AFAFAF" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- =============================================================================== -->
<!-- DateTimePicker -->
<!-- =============================================================================== -->
<Style TargetType="{x:Type xctk:DateTimePicker}">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}" />
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" />
<Setter Property="BorderBrush" Value="{DynamicResource {x:Static themes1:ResourceKeys.ControlNormalBorderKey}}" />
<Setter Property="BorderThickness" Value="1,1,0,1" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="HorizontalContentAlignment" Value="Right" />
<Setter Property="TextAlignment" Value="Right" />
<Setter Property="TimeWatermarkTemplate" Value="{StaticResource DefaultWatermarkTemplate}" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="WatermarkTemplate" Value="{StaticResource DefaultWatermarkTemplate}" />
<Setter Property="CalendarWidth" Value="178" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type xctk:DateTimePicker}">
<Border>
<Grid>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<xctk:ButtonSpinner x:Name="PART_Spinner"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch"
AllowSpin="{TemplateBinding AllowSpin}"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
ButtonSpinnerLocation="{TemplateBinding ButtonSpinnerLocation}"
IsTabStop="False"
ShowButtonSpinner="{TemplateBinding ShowButtonSpinner}">
<xctk:WatermarkTextBox x:Name="PART_TextBox"
MinWidth="20"
Padding="{TemplateBinding Padding}"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
AcceptsReturn="False"
Background="Transparent"
BorderThickness="0"
FontFamily="{TemplateBinding FontFamily}"
FontSize="{TemplateBinding FontSize}"
FontStretch="{TemplateBinding FontStretch}"
FontStyle="{TemplateBinding FontStyle}"
FontWeight="{TemplateBinding FontWeight}"
Foreground="{TemplateBinding Foreground}"
IsTabStop="True"
IsUndoEnabled="{Binding IsUndoEnabled, RelativeSource={RelativeSource TemplatedParent}}"
TabIndex="{TemplateBinding TabIndex}"
Text="{Binding Text, RelativeSource={RelativeSource TemplatedParent}}"
TextAlignment="{TemplateBinding TextAlignment}"
TextWrapping="NoWrap"
Watermark="{TemplateBinding Watermark}"
WatermarkTemplate="{TemplateBinding WatermarkTemplate}" />
</xctk:ButtonSpinner>
<ToggleButton x:Name="_calendarToggleButton"
Grid.Column="1"
Background="White"
Focusable="False"
IsChecked="{Binding IsOpen, RelativeSource={RelativeSource TemplatedParent}}"
IsEnabled="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource InverseBoolConverter}}"
IsHitTestVisible="{Binding IsOpen, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource InverseBoolConverter}}"
Style="{StaticResource DateTimePickerToggleButtonStyle}"
Visibility="{TemplateBinding ShowDropDownButton,
Converter={StaticResource BooleanToVisibilityConverter}}" />
</Grid>
<Popup x:Name="PART_Popup"
IsOpen="{Binding IsChecked, ElementName=_calendarToggleButton}"
StaysOpen="False"
ToolTip="{x:Static sys:String.Empty}">
<Popup.Resources>
<Style TargetType="ToolTip">
<Style.Triggers>
<Trigger Property="Content" Value="{x:Static sys:String.Empty}">
<Setter Property="Visibility" Value="Collapsed" />
</Trigger>
</Style.Triggers>
</Style>
</Popup.Resources>
<Border Padding="3"
Background="{StaticResource PanelBackgroundBrush}"
BorderBrush="{StaticResource PopupDarkBorderBrush}"
BorderThickness="1">
<StackPanel>
<Calendar x:Name="PART_Calendar"
BorderThickness="0"
DisplayMode="{Binding CalendarDisplayMode, RelativeSource={RelativeSource TemplatedParent}}">
<Calendar.Template>
<ControlTemplate TargetType="{x:Type Calendar}">
<Viewbox Width="{Binding CalendarWidth, RelativeSource={RelativeSource AncestorType={x:Type xctk:DateTimePicker}}}">
<StackPanel x:Name="PART_Root" HorizontalAlignment="Center">
<CalendarItem x:Name="PART_CalendarItem"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Style="{TemplateBinding CalendarItemStyle}" />
</StackPanel>
</Viewbox>
</ControlTemplate>
</Calendar.Template>
</Calendar>
<xctk:TimePicker x:Name="PART_TimeUpDown"
AllowSpin="{TemplateBinding TimePickerAllowSpin}"
Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"
ClipValueToMinMax="{Binding ClipValueToMinMax, RelativeSource={RelativeSource TemplatedParent}}"
Foreground="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"
Format="{TemplateBinding TimeFormat}"
FormatString="{TemplateBinding TimeFormatString}"
IsUndoEnabled="{Binding IsUndoEnabled, RelativeSource={RelativeSource TemplatedParent}}"
Kind="{Binding Kind, RelativeSource={RelativeSource TemplatedParent}}"
Maximum="{Binding Maximum, RelativeSource={RelativeSource TemplatedParent}}"
Minimum="{Binding Minimum, RelativeSource={RelativeSource TemplatedParent}}"
ShowButtonSpinner="{TemplateBinding TimePickerShowButtonSpinner}"
Step="{TemplateBinding Step}"
TimeInterval="00:30:00"
Visibility="{TemplateBinding TimePickerVisibility}"
Watermark="{TemplateBinding TimeWatermark}"
WatermarkTemplate="{TemplateBinding TimeWatermarkTemplate}"
Value="{Binding Value, RelativeSource={RelativeSource TemplatedParent}}" />
</StackPanel>
</Border>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BorderBrush" Value="{DynamicResource {x:Static themes1:ResourceKeys.ControlMouseOverBorderKey}}" />
</Trigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsReadOnly, RelativeSource={RelativeSource Self}}" Value="False" />
<Condition Binding="{Binding AllowTextInput, RelativeSource={RelativeSource Self}}" Value="False" />
</MultiDataTrigger.Conditions>
<Setter TargetName="PART_TextBox" Property="IsReadOnly" Value="True" />
</MultiDataTrigger>
<DataTrigger Binding="{Binding IsReadOnly, RelativeSource={RelativeSource Self}}" Value="True">
<Setter TargetName="PART_TextBox" Property="IsReadOnly" Value="True" />
</DataTrigger>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="BorderBrush" Value="{DynamicResource {x:Static themes1:ResourceKeys.ControlSelectedBorderKey}}" />
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
</Trigger>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="PART_TextBox" Property="FocusManager.FocusedElement" Value="{Binding ElementName=PART_TextBox}" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ShowButtonSpinner" Value="False" />
<Condition Property="ShowDropDownButton" Value="False" />
</MultiTrigger.Conditions>
<Setter TargetName="PART_Spinner" Property="BorderThickness" Value="{Binding BorderThickness, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BorderThicknessConverter}}" />
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
将此资源字典包含在您的应用程序资源或其他资源部分中，例如：
<ResourceDictionary Source="DateTimePickerResources.xaml"/>
正如您所看到的，这会带来大量代码来进行简单的更改，因此请考虑这项工作对您来说是否可行，或者忍受这种DateTimePicker控件的限制是否会更好。
在代码中，您可以设置显示在 DateTimePicker 中的时间间隔。例如
TPSalida.TimeInterval = TimeSpan.FromMinutes(30);
