我在WPF应用程序中使用Dragablz选项卡控件.昨晚App.xaml中的以下代码运行正常,但是今天我加载该项目时,它向我显示此错误:
Property elements cannot be in the middle of an element’s content.
They must be before or after the content.
<Application x:Class="MVCP.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:dragablz="clr-namespace:Dragablz;assembly=Dragablz"
StartupUri="FloatingActivator.xaml">
<Application.Resources>
<ResourceDictionary>
<Style x:Key="OpenSans">
<Setter Property="TextElement.FontFamily" Value="Open Sans, /MVCP;component/Fonts/#Open Sans" />
</Style>
<ResourceDictionary.MergedDictionaries>
<!-- primary color -->
<ResourceDictionary>
<!-- include your primary palette -->
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/MaterialDesignColor.Indigo.xaml" />
</ResourceDictionary.MergedDictionaries>
<!--
include three hues from the primary palette (and the associated forecolours).
Do not rename, keep in sequence; light to dark.
-->
<SolidColorBrush x:Key="PrimaryHueLightBrush" Color="{StaticResource Primary100}"/>
<SolidColorBrush x:Key="PrimaryHueLightForegroundBrush" Color="{StaticResource Primary100Foreground}"/>
<SolidColorBrush x:Key="PrimaryHueMidBrush" Color="{StaticResource Primary500}"/>
<SolidColorBrush x:Key="PrimaryHueMidForegroundBrush" Color="{StaticResource Primary500Foreground}"/>
<SolidColorBrush x:Key="PrimaryHueDarkBrush" Color="{StaticResource Primary700}"/>
<SolidColorBrush x:Key="PrimaryHueDarkForegroundBrush" Color="{StaticResource Primary700Foreground}"/>
</ResourceDictionary>
<!-- secondary colour -->
<ResourceDictionary>
<!-- include your secondary pallette -->
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/MaterialDesignColor.Yellow.xaml" />
</ResourceDictionary.MergedDictionaries>
<!-- include a single secondary accent color (and the associated forecolour) -->
<SolidColorBrush x:Key="SecondaryAccentBrush" Color="{StaticResource Accent200}"/>
<SolidColorBrush x:Key="SecondaryAccentForegroundBrush" Color="{StaticResource Accent200Foreground}"/>
</ResourceDictionary>
<!-- Include the Dragablz Material Design style -->
<ResourceDictionary Source="pack://application:,,,/Dragablz;component/Themes/materialdesign.xaml"/>
</ResourceDictionary.MergedDictionaries>
<!-- tell Dragablz tab control to use the Material Design theme -->
<Style TargetType="{x:Type dragablz:TabablzControl}" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}" />
<Style x:Key="FileItemStyle" TargetType="{x:Type ListViewItem}">
<Setter Property="Margin" Value="5,5,5,5"/>
<Setter Property="Padding" Value="0,0,0,0"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Grid HorizontalAlignment="Left" VerticalAlignment="Top" Height="50" >
<Border x:Name="border" BorderBrush="{x:Null}" BorderThickness="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" CornerRadius="2.5"/>
<StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ContentPresenter/>
</StackPanel>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
</Application.Resources>
</Application>
解决方法:
原因很简单:首先添加样式“ OpenSans”,然后设置MergedDictionary属性,然后再添加两个样式.要解决此问题,只需像这样重新排序:
<Application x:Class="MVCP.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:dragablz="clr-namespace:Dragablz;assembly=Dragablz"
StartupUri="FloatingActivator.xaml">
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<!-- primary color -->
<ResourceDictionary>
<!-- include your primary palette -->
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/MaterialDesignColor.Indigo.xaml" />
</ResourceDictionary.MergedDictionaries>
<!--
include three hues from the primary palette (and the associated forecolours).
Do not rename, keep in sequence; light to dark.
-->
<SolidColorBrush x:Key="PrimaryHueLightBrush" Color="{StaticResource Primary100}"/>
<SolidColorBrush x:Key="PrimaryHueLightForegroundBrush" Color="{StaticResource Primary100Foreground}"/>
<SolidColorBrush x:Key="PrimaryHueMidBrush" Color="{StaticResource Primary500}"/>
<SolidColorBrush x:Key="PrimaryHueMidForegroundBrush" Color="{StaticResource Primary500Foreground}"/>
<SolidColorBrush x:Key="PrimaryHueDarkBrush" Color="{StaticResource Primary700}"/>
<SolidColorBrush x:Key="PrimaryHueDarkForegroundBrush" Color="{StaticResource Primary700Foreground}"/>
</ResourceDictionary>
<!-- secondary colour -->
<ResourceDictionary>
<!-- include your secondary pallette -->
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/MaterialDesignColor.Yellow.xaml" />
</ResourceDictionary.MergedDictionaries>
<!-- include a single secondary accent color (and the associated forecolour) -->
<SolidColorBrush x:Key="SecondaryAccentBrush" Color="{StaticResource Accent200}"/>
<SolidColorBrush x:Key="SecondaryAccentForegroundBrush" Color="{StaticResource Accent200Foreground}"/>
</ResourceDictionary>
<!-- Include the Dragablz Material Design style -->
<ResourceDictionary Source="pack://application:,,,/Dragablz;component/Themes/materialdesign.xaml"/>
</ResourceDictionary.MergedDictionaries>
<Style x:Key="OpenSans">
<Setter Property="TextElement.FontFamily" Value="Open Sans, /MVCP;component/Fonts/#Open Sans" />
</Style>
<!-- tell Dragablz tab control to use the Material Design theme -->
<Style TargetType="{x:Type dragablz:TabablzControl}" BasedOn="{StaticResource MaterialDesignTabablzControlStyle}" />
<Style x:Key="FileItemStyle" TargetType="{x:Type ListViewItem}">
<Setter Property="Margin" Value="5,5,5,5"/>
<Setter Property="Padding" Value="0,0,0,0"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Grid HorizontalAlignment="Left" VerticalAlignment="Top" Height="50" >
<Border x:Name="border" BorderBrush="{x:Null}" BorderThickness="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" CornerRadius="2.5"/>
<StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ContentPresenter/>
</StackPanel>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
</Application.Resources>