WPF / XAML如何指定要从中加载资源的程序集？

Question

我正在使用WPF类库，而不是应用程序。这是我在c＃中制作的Label的示例，我想使用XAML对它进行“样式化”。

   private void CreateElement(int i)
    {
        UIElementOut[i] = new Label();
        var uiElement = (Label)UIElementOut[i];
        uiElement.HorizontalAlignment = HorizontalAlignment.Center;
        uiElement.VerticalAlignment = VerticalAlignment.Center;
        uiElement.FontFamily = new FontFamily(FFontInput[i]);
        uiElement.FontSize = Convert.ToDouble(FontSizeIn[i]);
        uiElement.Content = TextIn[i];
        Brush BgBrushColor = new SolidColorBrush(RGBAToMediaColor(FBgCol[i]));
        Brush FgBrushColor = new SolidColorBrush(RGBAToMediaColor(FFgCol[i]));
        uiElement.Background = BgBrushColor;
        uiElement.Foreground = FgBrushColor;
        Uri uri = new Uri("Styles/LabelStyle.xaml", UriKind.Relative);
        StreamResourceInfo info = Application.GetContentStream(uri);
        System.Windows.Markup.XamlReader reader = new System.Windows.Markup.XamlReader();
        ResourceDictionary myResourceDictionary = (ResourceDictionary)reader.LoadAsync(info.Stream);
        Application.Current.Resources.MergedDictionaries.Add(myResourceDictionary);
        Style myLabelStyle = myResourceDictionary["LabelStyle"] as Style;
        uiElement.Style = myLabelStyle;
    }

为此，我有包含我的LabelStyle的资源字典，所有内容都在编译时没有问题。

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:local="clr-namespace:WpfApplication1">
<Style x:Key="LabelStyle" TargetType="{x:Type Label}">
    <Setter Property="Height" Value="53" />
    <Setter Property="Width" Value="130" />
    <Setter Property="HorizontalAlignment" Value="Left" />
    <Setter Property="Margin" Value="99,71,0,0" />
    <Setter Property="VerticalAlignment" Value= "Top" />
    <Setter Property="Foreground" Value="#FFE75959" />
    <Setter Property="FontFamily" Value="Calibri" />
    <Setter Property="FontSize" Value="40" />
</Style>

但是当我以后使用dll时，该样式未应用，并且出现此错误消息：

ERR : Assembly.GetEntryAssembly() returns null. Set the Application.ResourceAssembly property or use the pack://application:,,,/assemblyname;component/ syntax to specify the assembly to load the resource from.

这是我的实际App.xaml，将构建操作设置为页面：

<Application x:Class="WpfApplication1.App"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="clr-namespace:WpfApplication1"
         StartupUri="MainWindow.xaml">
<Application.Resources>

</Application.Resources>

如何指定要从中加载资源的程序集？我是WPF的新手，因此我一直在解决这个问题，谢谢。

编辑1：

我尝试过，因为我的程序集名称是WpfApplication1（请参见此处http://postimg.org/image/ksyj9xi5p/）

ResourceDictionary myResourceDictionary = Application.LoadComponent(new Uri("/WpfApplication1;component/Styles/LabelStyle.xaml", UriKind.RelativeOrAbsolute)) as ResourceDictionary;

代替

ResourceDictionary myResourceDictionary = (ResourceDictionary)reader.LoadAsync(info.Stream);

并得到相同的错误。

Answer 1

您是否尝试过更换

Uri uri = new Uri("Styles/LabelStyle.xaml", UriKind.Relative);

根据您在错误中指示的建议，即使用“ Pack”语法？

pack://application:,,,/assemblyname;component/

提供您提供的信息

Uri uri = new Uri("pack://application:,,,/WpfApplication1;component/Styles/LabelStyle.xaml", UriKind.Relative);

Answer 2

这可能对您有帮助

ResourceDictionary myResourceDictionary = Application.LoadComponent(new Uri("/assemblyname;component/Styles/LabelStyle.xaml", UriKind.RelativeOrAbsolute)) as ResourceDictionary;

然后您可以按照通常的方式在其中找到资源，例如myDictionary["LabelStyle"]

Answer 3

您可以按照错误消息中的建议设置属性：System.Windows.Application.ResourceAssembly。仔细阅读documentation。请注意，该属性只能设置一次。