How to exclude file to publish in WEBAPI 2 (VS 2015)

See more:

WebAPI

MVC6

C#6.0

ASP.NET-Core

I have two files(Say x.json and y.json) in my wwwRoot folder of WebAPI's solution.

I do not want to publish this files on server.
As that files get included into wwwRoot folder of my site.

After publishing, my WebAPI is able to create new copy of these files.

How can I do this?

What I have tried:

I tried to add entries in exclude and publishexclude sections of Project.json file.
But It didn't work.

"exclude": [
    "wwwroot",
    "node_modules",
    "x.json",
    "y.json"
  ],
  "publishExclude": [
    "**.user",
    "**.vspscc",
    "x.json",
    "y.json"
  ]