默认情况下，JetBrains Rider无法加载Properties\DesignTimeResources.xaml设计时的资源，可以在.csproj项目文件中加入如下配置：

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<ItemGroup>
  <ApplicationDefinition Include="Properties\DesignTimeResources.xaml" Condition="'$(JetBrainsDesignTimeBuild)' == 'true'">
    <Generator>MSBuild:Compile</Generator>
    <SubType>Designer</SubType>
    <ContainsDesignTimeResources>true</ContainsDesignTimeResources>
  </ApplicationDefinition>
</ItemGroup>