Could not find type name or namespace 'OpenIddictDbContext <,>'

Question

I have a problem. This morning I opened my project and got an error:

Could not find name of type or namespace 'OpenIddictDbContext <,>' (do you miss using directive or assembly reference?) [Netcoreapp1.1]

This error occurred when I restored and built my project. This is strange because I have "OpenIddict": "1.0.0 - *" in my project.json file and I use the link: using OpenIddict ;

This question is causing problems throughout my project because it does not seem to recognize using OpenIddict

If this helps, this is an example when I received an error (ApplicationDbContext.cs)

 namespace Overnight.Db
{
    //the error: The type or namespace name 'OpenIddictDbContext<,,>' could not be found (are you missing a using directive or an assembly reference?)

    public class ApplicationDbContext : OpenIddictDbContext<ApplicationUser, ApplicationRole, Guid>
    {

or

 //the error: 'OpenIddictDbContext<ApplicationUser, ApplicationRole, Guid>' does not contain a constructor that takes 1 arguments

        protected override void OnModelCreating(ModelBuilder builder)
        {

Here is my project.json:

{
  "version": "1.0.0-*",
  "buildOptions": {
      "emitEntryPoint": true
  },
  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.1.0"
    }, 
    "Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
    "AspNet.Security.Oauth.Validation": "1.0.0-alpha2-final",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.0.0",
    "OpenIddict": "1.0.0-*",
    "Npgsql.EntityFrameworkCore.PostgreSQL": "1.0.1-*",
    "Npgsql.EntityFrameworkCore.PostgreSQL.Design": "1.0.1-*",
    "Bogus": "7.1.6",
    "Overnight.Models": {
      "target": "project",
      "version": "1.0.0-*"
    }
  },
  "frameworks": {
    "netcoreapp1.1": {}
  },
  "tools": {
    "Microsoft.EntityFrameworkCore.Tools": {
        "version": "1.0.0-preview2-final"
    }
  }
}

This is strange because every project that I open in my visual code has this error, so I don’t think it is related to my project.

Answer 1

Starting with beta2, OpenIddict no longer has a dedicated one DbContext, you can subclass, since this template, inherited from ASP.NET Core Identity, turned out to be quite impractical.

Instead, you are now prompted to directly inherit from IdentityDbContextand register the objects required by OpenIddict by calling options.UseOpenIddict()from ConfigureServices:

project.json:

"dependencies": {
  "OpenIddict": "1.0.0-*",
  "OpenIddict.EntityFrameworkCore": "1.0.0-*",
  "OpenIddict.Mvc": "1.0.0-*"
}

Startup:

services.AddDbContext<ApplicationDbContext>(options =>
{
    // Configure the context to use Microsoft SQL Server.
    options.UseSqlServer(configuration["Data:DefaultConnection:ConnectionString"]);

    // Register the entity sets needed by OpenIddict.
    // Note: use the generic overload if you need
    // to replace the default OpenIddict entities.
    options.UseOpenIddict();
});

// Register the OpenIddict services.
services.AddOpenIddict(options =>
{
    // Register the Entity Framework stores.
    options.AddEntityFrameworkCoreStores<ApplicationDbContext>();
});

ApplicationDbContext:

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext(DbContextOptions options)
        : base(options) { }

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);
    }
}