How do I make an XML file an embedded resource in a vNext (ASP.NET 5) class library?

Question

I have an MVC 6 (vNext/ASP.NET 5) project, with one class library for the DAL(Data Access Layer). Now I am getting an exception because NHibernate can't find the mapping file for an entity I am trying to persist. I have seen strict instructions to mark this XML mapping file as an embedded resource and not to copy to output, but in none of the three property pages I manage to open for this file, is there anywhere to stipulate this.

I am simply going to move to code-based fluent mapping, but this issue isn't unique to my one NHibernate mapping file. The old property page for project items, available by right click in Solution Explorer, is simply gone. I am hoping that if such a thing as an embedded resource still exists, it is somewhere else, like project.json, that we must specify this.

Answer 1

UPDATE

My previous answer is no longer valid (since RC2), the resource is now marked as deprecated. (Thanks @Yossarian)

Proper way how to do this is now to use buildOptions/embed:

...
"buildOptions": {
  "emitEntryPoint": true,
  "embed": [ "9NLiZmx.png" ]
},
...

---

You must use the section resource in project.json, like this

{
  "compile": "*.cs",
  "resource": [
    "mapping.xml"
  ]
}

By default all code files in a directory containing a project.json are included in the project. You can control this with the include/exclude sections of the project.json.

Most sections of the project.json file that deal with files allow glob patterns, which are often called wildcards.

List of include/exclude properties

name                  default value
===============================================
compile                   
compileExclude            
content               **/*   
contentExclude            
preprocess            compiler/preprocess/**/*.cs   
preprocessExclude         
resource              compiler/preprocess/resources/**/*   
resourceExclude           
shared                compiler/shared/**/*.cs   
sharedExclude             
publishExclude        bin/**;obj/**;**/.*/**   
exclude              

More info: http://docs.asp.net/en/latest/dnx/projects.html#including-excluding-files

---

You can see a sample below:

Program.cs

using System;
using System.Reflection;

namespace ConsoleApp1
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var assemblyName = new AssemblyName("ConsoleApp1");
            var resources = string.Join(Environment.NewLine, Assembly.Load(assemblyName).GetManifestResourceNames());
            Console.WriteLine("List of Manifest Resource Names");
            Console.WriteLine("======================");
            Console.WriteLine(resources);
        }
    }
}

project.json

{
  "version": "1.0.0-*",
  "description": "ConsoleApp1 Console Application",
  "authors": [ "Alberto Monteiro" ],
  "tags": [ "" ],
  "projectUrl": "",
  "licenseUrl": "",

  "compilationOptions": {
    "emitEntryPoint": true
  },
  "resource": "9NLiZmx.png",
  "dependencies": {
  },

  "commands": {
    "ConsoleApp1": "ConsoleApp1"
  },

  "frameworks": {
    "dnx451": { },
    "dnxcore50": {
      "dependencies": {
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Console": "4.0.0-beta-23516",
        "System.Linq": "4.0.1-beta-23516",
        "System.Threading": "4.0.11-beta-23516",
        "System.IO": "4.0.11-beta-23516",
        "System.IO.FileSystem": "4.0.1-beta-23225",
        "System.Reflection": "4.1.0-beta-23516"
      }
    }
  }
}

Output

List of Manifest Resource Names
======================
ConsoleApp1.9NLiZmx.png

Answer 2

Alberto's answer is no longer valid (since RC2), the resource is now marked as deprecated.

Proper way how to do this is now to use buildOptions/embed:

...
"buildOptions": {
  "emitEntryPoint": true,
  "embed": [ "9NLiZmx.png" ]
},
...