如何在.NET Core类库中使用System.Windows.Forms [英] How to use System.Windows.Forms in .NET Core class library

问题描述

我已经创建了.NET Core类库，并尝试针对net40框架进行构建。我想使用System.Windows.Forms程序集中的Clipboard类。我该怎么办？

I've created .NET Core class library and try to build it against net40 framework. I want to use Clipboard class from System.Windows.Forms assembly. How can I do this?

我的project.json文件：

My project.json file:

{
    "version": "1.0.0-*",

    "dependencies": {
        "NETStandard.Library": "1.6.0"
    },

    "frameworks": {
        "netstandard1.6": {
            "imports": "dnxcore50",
            "buildOptions": {
                "define": [
                    "NETCORE"
                ]
            },
            "dependencies": {
                "System.Threading": "4.0.11",
                "System.Threading.Thread": "4.0.0",
                "System.Threading.Tasks":  "4.0.11"
                }
        },
        "net40": {
            "buildOptions": {
                "define": [
                    "NET40"
                    ]
                },
            "dependencies": {
                // dependency should be here but there is no such dll
            }
        }
    }
}

我所有的net40特定代码在NET40下定义。有什么想法吗？

All my net40 specific code is under NET40 define. Any thoughts?

推荐答案

您需要的是 frameworkAssemblies ，例如：

What you need is "frameworkAssemblies", for example:

"frameworks": {
  "netstandard1.6": {
    "dependencies": {
      "NETStandard.Library": "1.6.0"
    }
  },
  "net40": {
    "frameworkAssemblies": {
      "System.Windows.Forms": {}
    }
  }
}

使用剪贴板还需要将主线程设置为STA，因此不要忘记将 [STAThread] 添加到 Main（）在您的应用程序中。

Working with Clipboard also requires setting the main thread as STA, so don't forget to add [STAThread] to Main() in your application.

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