.net 无法从外部DLL加载接口的实现
这是我的撰写部分,我在目录中看到应该加载的正确编号,以及asmCatalog.net 无法从外部DLL加载接口的实现,.net,.net-4.0,mef,.net,.net 4.0,Mef,这是我的撰写部分,我在目录中看到应该加载的正确编号,以及asmCatalog public void Compose() { var aggrCatalog = new AggregateCatalog(); //A directory catalog var dirCatalog = new DirectoryCatalog(Path.GetDirectoryName( Assembly.GetExecutingAssembly().Location)
public void Compose()
{
var aggrCatalog = new AggregateCatalog();
//A directory catalog
var dirCatalog = new DirectoryCatalog(Path.GetDirectoryName(
Assembly.GetExecutingAssembly().Location) + "\\Extensions", "*.dll");
//An assembly catalog
var asmCatalog = new AssemblyCatalog(Assembly.GetExecutingAssembly());
aggrCatalog.Catalogs.Add(dirCatalog);
aggrCatalog.Catalogs.Add(asmCatalog);
//Create a container THE CONTAINER DOES CONTAIN 5 PARTS AND
// LOOK PERFECTLY OK. The 5 parts consist of 3 from this assembly
// and two from the external assembly
var container = new CompositionContainer(aggrCatalog);
// IT DOES NOT COMPOISE THE 2 PARTS THAT WERE LOADED FROM THE EXTERNAM ASSY
container.ComposeParts(this);
}
我正在使用此界面和属性:
namespace Q95Interface
{
public interface IQ95_EventHandler
{
void HandleQ95Event();
void HandleQ95Event(string s);
}
public interface IUIExtensionDetails
{
string Event_Group_Name { get; }
string Event_Name { get; }
}
[MetadataAttribute]
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
public class Q95_EventHandlerAttribute : ExportAttribute
{
public Q95_EventHandlerAttribute() : base(typeof(IQ95_EventHandler)) { }
public string Event_Group_Name { get; set; }
public string Event_Name { get; set; }
}
}
我想要导入的实现是(进入本地程序集的实现看起来完全相同,并且可以完美地加载和工作)
我已将接口和属性定义分别编译到dll中您的
[Import]
定义为什么?我怀疑这可能是因为您的导出没有导出元数据。事实上,您已经创建了一个自定义的导出属性,但没有使用它
尝试更改导出:
[Q95_EventHandler(Event_Group_Name = "Something", Event_Name = "Something Else")]
public class Q95_Event_Handler5 : IQ95_EventHandler
{
}
并确保您相应地导入:
[ImportMany]
public IEnumerable<Lazy<IQ95_EventHandler, IUIExtensionDetails>> Handlers { get; set; }
[ImportMany]
公共IEnumerable处理程序{get;set;}
值得一看Daniel Plaisted的博客文章,这篇文章的标题是了解您可能遇到的问题。非常感谢,这是问题的解决方案。仅供参考信息我的原始导入语句是//public Lazy[]Q95EventHandlers{get;set;}
[ImportMany]
public IEnumerable<Lazy<IQ95_EventHandler, IUIExtensionDetails>> Handlers { get; set; }