我有四个程序集,它们相互参照,如上图所示:
TpProjectModel共享接口,DILib和FileProject实现它们,而TpPtojektCLI根据配置文件中的设置使用其中一种实现方式
当我想在TpProjectCLI中编写它们时,我有以下例外情况:
组成保持不变。更改被拒绝,因为 出现以下错误:组合物产生了一个 组成错误。根本原因在下面提供。查看 CompositionException.Errors属性以获取更多详细信息。
1)找到多个与约束匹配的出口: 合同名称TpProjectModel.Reflection.IReflector RequiredTypeIdentity TpProjectModel.Reflection.IReflector
结果:无法设置导入 'ViewModels.Dashboard.DashboardViewModel.Reflector (ContractName =“ TpProjectModel.Reflection.IReflector”)'部分 'ViewModels.Dashboard.DashboardViewModel'。元件: ViewModels.Dashboard.DashboardViewModel.Reflector (ContractName =“ TpProjectModel.Reflection.IReflector”)-> ViewModels.Dashboard.DashboardViewModel
以及如何获取所有所需程序集的代码:
NameValueCollection plugins = (NameValueCollection)ConfigurationManager.GetSection("plugins");
string[] pluginsCatalogs = plugins.AllKeys;
List<DirectoryCatalog> assemblyCatalogs = new List<DirectoryCatalog>();
foreach (string pluginsCatalog in pluginsCatalogs)
{
if (Directory.Exists(pluginsCatalog))
assemblyCatalogs.Add(new DirectoryCatalog(pluginsCatalog));
}
AggregateCatalog catalog = new AggregateCatalog(assemblyCatalogs);
CompositionContainer container = new CompositionContainer(catalog);
try
{
container.ComposeParts(this);
}
catch (CompositionException compositionException)
{
Console.WriteLine(compositionException.ToString());
throw;
}
catch (Exception exception) when (exception is ReflectionTypeLoadException)
{
ReflectionTypeLoadException typeLoadException = (ReflectionTypeLoadException)exception;
Exception[] loaderExceptions = typeLoadException.LoaderExceptions;
loaderExceptions.ToList().ForEach(ex => Console.WriteLine(ex.StackTrace));
throw;
}