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我创建了一个程序来使用以下代码加载动态程序集：

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Threading.Tasks;

namespace BarcodeReader
{
   public class Parsing
   {
      private static string _FolderName = "BarcodeReaders";
      private static bool _Initialized = false;
      private static IEnumerable<IBarcodeReader> _Objs;

      /// Parse the picture
      /// <returns>The value from the picture</returns>
      public static async Task<string> ParsePicture()
      {
         // Check if this class has not been initialized, and if it hasn't initialize it
         if (!_Initialized)
         {
            await InitializeAsync();
         }

         foreach (var Obj in _Objs)
         {
            if (Obj.IsType())
            {
               return Obj.GetValue();
            }
         }

         return null;
      }

      private static async Task InitializeAsync()
      {
         // Get the folder
         var Folder = await GetFolder();

         // Get the Files in the Folder
         var Files = await Folder.GetFilesAsync();

         // Initialize the objects and set them
         _Objs = InitializeObjects(Files);

         // Set it as initialized
         _Initialized = true;
      }

      private static IEnumerable<IBarcodeReader> InitializeObjects(IEnumerable<Windows.Storage.StorageFile> Files)
      {
         foreach (var File in Files)
         {
            string Name = File.Path;
            var Assembly = System.Reflection.Assembly.Load(new AssemblyName(Name));
            foreach (var Typ in Assembly.ExportedTypes)
            {
               var TypInfo = Typ.GetTypeInfo();
               foreach (var Interf in TypInfo.ImplementedInterfaces)
               {
                  if (Interf.Name.Equals("IBarcodeReader"))
                  {
                     yield return (IBarcodeReader)Activator.CreateInstance(Typ);
                  }
               }
            }
         }
      }

      private static async Task<bool> BarcodeFolderExist(Windows.Storage.StorageFolder Folder)
      {
         // Get all folders
         var Folders = await Folder.GetFoldersAsync();

         // For each folder, check if it is the Folder we are searching and if it is return true
         foreach (var Foldr in Folders)
         {
            if (Foldr.Name.Equals(_FolderName))
            {
               return true;
            }
         }

         // Return false as the folder was not found
         return false;
      }

      private static async Task<Windows.Storage.StorageFolder> GetFolder()
      {
         // Get the local-folder
         var Folder = Windows.Storage.ApplicationData.Current.LocalFolder;

         // Check if the folder does not exist, and if it does not create it
         if (!await BarcodeFolderExist(Folder))
         {
            await Folder.CreateFolderAsync(_FolderName);
         }

         return await Folder.GetFolderAsync(_FolderName);
      }
   }
}

我要加载的项目是这些文件

namespace QRReader
{
   public sealed class QRReader : IBarcodeReader
   {
      public bool IsType()
      {
         return true;
      }

      public string GetValue()
      {
         return "HEJ";
      }
   }

   public interface IBarcodeReader
   {
      bool IsType();
      string GetValue();
   }
}

但我得到这个错误

FileLoadException was unhandled by user code
The assembly name or code base was illegal. (Exception HRESULT: 0x80131047)

-name变量设置为 C:\Users\Lasse\AppData\Local\Packages\93e3b2c9-7ef8-4537-be39-d0f3e93ca100_e85ydygyad1dy\LocalState\BarcodeReaders\QRReader.winmd

4

1 回答 1

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我在 Internet 上读到的所有内容都表明，Microsoft 已将其作为运行时环境（WinRT 和 UWP）的一项经过深思熟虑的安全功能，无法在运行时加载程序集。这是 UWP 中的一个显示停止限制功能。它或多或少地使平台变得无用，因为如果有针对给定客户的定制，应用程序供应商将不得不拆分应用程序并将其部署到商店的每个客户的版本。

请花时间对允许在运行时动态加载程序集的功能请求进行投票： https ://wpdev.uservoice.com/forums/110705-universal-windows-platform/suggestions/18145291-dynamically-load-assembly

于 2017-02-14T21:57:24.413 回答