Question

我正在开发一个C＃MEF / Caliburn.Micro应用程序，它有一些样式，颜色等的资源字典。我试图给每个样式提供自己的文件，我是遇到基于其他资源字典中的样式的样式的问题。所有应用程序范围的资源都存在于Infastructure项目中，这些资源已合并到App.xaml。

这是我的解决方案布局：

Solution

  ->Shell
    App.xaml
    (other shell-related files)

  ->Infastructure
    ->ResourceDictionaries
      ->Brushes
          DefaultColorTheme.xaml
      ->ControlStyles
          ButtonStyle.xaml
          DeleteButtonStyle.xaml
          EditButtonStyle.xaml
      ResourceLibrary.xaml

ResourceLibrary.xaml是ResourceDictionaries文件夹中所有资源字典的合并。

ResourceLibrary.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<ResourceDictionary.MergedDictionaries>
  <ResourceDictionary Source="Brushes/DefaultColorTheme.xaml"/>
  <ResourceDictionary Source="ControlStyles/ButtonStyle.xaml"/>
  <ResourceDictionary Source="ControlStyles/DeleteButtonStyle.xaml"/>
  <ResourceDictionary Source="ControlStyles/EditButtonStyle.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

ResourceLibrary.xaml合并到App.xaml

的App.xaml

<Application...
         >
<Application.Resources>
  <ResourceDictionary>
     <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/Infastructure;component/ResourceDictionaries/ResourceLibrary.xaml"/>
        <ResourceDictionary>
           <local:Bootstrapper x:Key="Bootstrapper"/>
        </ResourceDictionary>
        </ResourceDictionary.MergedDictionaries>
  </ResourceDictionary>
 </Application.Resources>
</Application>

ButtonStyle.xaml包含以ButtonBase为目标的主按钮样式，以及将主按钮样式应用于Button和ToggleButton的两种匿名样式

ButtonStyle.xaml

<Style x:Key="ButtonStyle" TargetType="{x:Type ButtonBase}">
  ...
</Style>

<Style BasedOn="{StaticResource ButtonStyle}" TargetType="{x:Type Button}"/>
<Style BasedOn="{StaticResource ButtonStyle}" TargetType="{x:Type ToggleButton}"/>

这很好用。 get中的所有Button和ToggleButton都应用了样式。

我还有两个其他按钮样式，它们在应用程序DeleteButtonStyle和EditButtonStyle中大量使用，需要基于ButtonStyle。这是来自DeleteButtonStyle.xaml的代码片段。 EditButtonStyle类似。

<Style x:Key="DeleteButtonStyle" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource ButtonStyle}">
 ....
</Style>

一切都在设计时有效。这些按钮获得ButtonStyle样式，明确标有...Style="{DynamicResource DeleteButtonStyle}"...的按钮会将DeleteButtonStyle应用于它们。但是，在运行时，我总是得到以下异常：

System.Windows.Markup.XamlParseException occurred
 HResult=-2146233087
 Message='Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception.' Line number '4' and line position '35'.
  Source=PresentationFramework
  LineNumber=4
  LinePosition=35
  StackTrace:
    at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
    at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
    at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
    at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
    ...
 InnerException: 
   HResult=-2146233088
   Message=Cannot find resource named 'ButtonStyle'. Resource names are case sensitive.
   Source=PresentationFramework
   StackTrace:
        at System.Windows.StaticResourceExtension.ProvideValueInternal(IServiceProvider serviceProvider, Boolean allowDeferredReference)
        at System.Windows.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider)
        at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)
   InnerException:

如果我将DeleteButtonStyle和EditButtonStyle移动到ButtonStyle所在的同一文件中（ButtonStyle.xaml），就像这样

<Style x:Key="ButtonStyle" TargetType="{x:Type ButtonBase}">
  ...
</Style>

<Style BasedOn="{StaticResource ButtonStyle}" TargetType="{x:Type Button}"/>
<Style BasedOn="{StaticResource ButtonStyle}" TargetType="{x:Type ToggleButton}"/>

<Style x:Key="DeleteButtonStyle" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource ButtonStyle}">
 ....
</Style>
<Style x:Key="EditButtonStyle" TargetType="{x:Type ButtonBase}" BasedOn="{StaticResource ButtonStyle}">
 ....
</Style>

然后一切正常。

如何将依赖于其他样式的样式分隔到自己的资源字典中？

Answer 1

在DeleteButtonStyle和EditButtonStyle

中

  <ResourceDictionary Source="ControlStyles/DeleteButtonStyle.xaml"/>
  <ResourceDictionary Source="ControlStyles/EditButtonStyle.xaml"/>

您必须再次明确合并两个文件中的ResourceDictionary以加载ButtonStyle。

所以

<ResourceDictionary>
     <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/Infastructure;component/ResourceDictionaries/ButtonStyle.xaml"/>
     </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

WPF将依赖于其他样式的样式分隔到自己的资源字典中

1 个答案: