无法在 DLL 的类中加载依赖项 system.drawing.common
[英]Cannot load dependency system.drawing.common in a class in a DLL
问题描述
I'm copying my program to a Virtual Machine to see what software I need and which settings I need to have enabled (or disabled).
我正在将我的程序复制到虚拟机以查看我需要什么软件以及我需要启用（或禁用）哪些设置。 My program is running fine on my work laptop and on my own laptop (older version), but on the VM the program throws an error during run time.我的程序在我的工作笔记本电脑和我自己的笔记本电脑（旧版本）上运行良好，但在 VM 上，程序在运行时抛出错误。
My program is made out of one executable and many DLLs, both the Executable and the DLLs are able to start just fine including using the dependency system.drawing.common .我的程序由一个可执行文件和许多 DLL 组成，可执行文件和 DLL 都能够很好地启动，包括使用依赖项system.drawing.common 。 But one of the classes in one of the DLLs gives an error that the dependency system.drawing.common could not be loaded.但是其中一个 DLL 中的一个类给出了无法加载依赖项system.drawing.common的错误。 Rebuilding the DLL in question doesn't give a warning that something is wrong.重建有问题的 DLL 不会发出错误警告。 See image below for the error I see.请参阅下图了解我看到的错误。
[ERROR][12/18/2019 11:04:02 AM][Thread 0006]> [akka://ModulairVisionFramework/user/AcquireImageActor] Could not load file ?
1 ) at Akka.Tools.MatchHandler.PartialHandlerArgumentsCapture2.Handle(T >value) at Akka.Actor.ReceiveActor.ExecutePartialMessageHandler(Object message, >PartialAction`1 partialAction) at Akka.Actor.ReceiveActor.OnReceive(Object message) at Akka.Actor.UntypedActor.Receive(Object message) at Akka.Actor.ActorBase.AroundReceive(Receive receive, Object message) at Akka.Actor.ActorCell.ReceiveMessage(Object message) at Akka.Actor.ActorCell.Invoke(Envelope envelope)1 ) at Akka.Tools.MatchHandler.PartialHandlerArgumentsCapture2.Handle(T >value) at Akka.Actor.ReceiveActor.ExecutePartialMessageHandler(Object message, >PartialAction`1 partialAction) at Akka.Actor.ReceiveActor.OnReceive(Object message) at Akka。 Actor.UntypedActor.Receive(Object message) at Akka.Actor.ActorBase.AroundReceive(Receive receive, Object message) at Akka.Actor.ActorCell.ReceiveMessage(Object message) at Akka.Actor.ActorCell.Invoke(信封信封)
What can the cause be that the main executable and the interface of the DLL are both using system.drawing.common fine, but a class in the DLL in question cannot use the dependency?可能是什么原因导致主可执行文件和 DLL 的接口都使用system.drawing.common很好，但是有问题的 DLL 中的一个类不能使用依赖项？ And how can this issue be resolved?如何解决这个问题？ I have not faced this issue on my work laptop so far or on another computer (older version of my application but still uses system.drawing.common ).到目前为止，我还没有在我的工作笔记本电脑或另一台计算机上遇到过这个问题（我的应用程序的旧版本，但仍然使用system.drawing.common ）。
EDIT In both the executable project as in the DLL in question I'm using the NuGet package manager for system.drawing.common .编辑在有问题的 DLL 中的两个可执行项目中，我都将 NuGet 包管理器用于system.drawing.common 。 How the package is included:包是如何包含的：
<PackageReference Include="system.drawing.common" Version="4.6.0" />
1 个解决方案
解决方案1
1 2019-12-18 11:12:26
I hit this same problem a week or so ago.大约一周前我遇到了同样的问题。 If this is a .NET core assembly, the way you reference it makes a big difference.如果这是一个 .NET 核心程序集，您引用它的方式会产生很大的不同。 Instead of referencing the .NET lib directly (right click -> add reference), use a package reference in the project file:不要直接引用 .NET 库（右键单击 -> 添加引用），而是在项目文件中使用包引用：
<PackageReference Include="System.Drawing.Common" Version="4.6.0" />
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