我已经将C WinForms应用程序从Visual C 2008(Framework 3.5)升级到2010(Framework 4.0),并且出现运行时错误。
应用程序在运行时使用assembly.load(文件名)动态加载程序集。它是这样设计的,因为根据用户配置,它应该加载位于不同文件夹中的程序集的不同实现。
一切正常,除非加载的dll有嵌入的资源(位图或XSD数据集),然后我得到fileNotFoundException:
“找不到文件”ff.fi_stat.ska.resources“。”:空
该程序集称为ff.fi_stat.ska.dll。我不理解此消息,因为输出目录中没有外部资源(只有嵌入的资源),也没有由VS生成具有该名称的文件。有什么想法吗?
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更多细节:
这是我加载程序集的方式:
Assembly a = Assembly.LoadFile(assemblyFileName);
程序集的实际加载工作正常,当我尝试在程序集内创建类的实例时,会发生异常:
Type t = a.GetType("nameofclass");
Activator.CreateInstance(t); //fails here
下面是堆栈跟踪:
Exception has been thrown by the target of an invocation.
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
...
内部异常堆栈跟踪:
at System.Reflection.RuntimeAssembly.InternalGetSatelliteAssembly(String name, CultureInfo culture, Version version, Boolean throwOnFileNotFound, StackCrawlMark& stackMark)
at System.Resources.ManifestBasedResourceGroveler.GetSatelliteAssembly(CultureInfo lookForCulture, StackCrawlMark& stackMark)
at System.Resources.ManifestBasedResourceGroveler.GrovelForResourceSet(CultureInfo culture, Dictionary`2 localResourceSets, Boolean tryParents, Boolean createIfNotExists, StackCrawlMark& stackMark)
at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo requestedCulture, Boolean createIfNotExists, Boolean tryParents, StackCrawlMark& stackMark)
at System.Resources.ResourceManager.InternalGetResourceSet(CultureInfo culture, Boolean createIfNotExists, Boolean tryParents)
at System.Resources.ResourceManager.GetString(String name, CultureInfo culture)
at System.Resources.ResourceManager.GetString(String name)
at FF.Fi_Stat.SKA.RegForm.InitializeComponent()
at FF.Fi_Stat.SKA.RegForm..ctor()
我现在意识到,不起作用的DLL在初始化组件中有以下共同点:
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(RegForm));
不过,正如我提到的,框架3.5没有问题。
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找到解决方案
我发现问题与dotnet框架如何尝试查找本地化资源有关,在我将以下行添加到程序集中的assemblyinfo.cs后,它再次开始工作。
[assembly: NeutralResourcesLanguageAttribute("sv-SE", UltimateResourceFallbackLocation.MainAssembly)]
