How to use System.Windows.Forms in .NET Core class library -

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i've created .net core class library , try build against net40 framework. want use clipboard class system.windows.forms assembly. how can this?

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 here there no such dll             }         }     } }

all net40 specific code under net40 define. thoughts?

what need "frameworkassemblies", example:

"frameworks": {   "netstandard1.6": {     "dependencies": {       "netstandard.library": "1.6.0"     }   },   "net40": {     "frameworkassemblies": {       "system.windows.forms": {}     }   } }

working clipboard requires setting main thread sta, don't forget add [stathread] main() in application.


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