找不到类型或命名空间名称“OpenIddictDbContext<,>”

我有个问题。今天早上我打开我的项目并收到错误：

找不到类型或命名空间名称“OpenIddictDbContext”（您是否缺少 using 指令或程序集引用？）[netcoreapp1.1]

当我恢复并构建项目时发生此错误。这很奇怪，因为我确实有“OpenIddict”：“1.0.0-*”，在我的 project.json 文件中，我正在使用参考：使用 OpenIddict;

这个问题在我的项目中到处引起问题，因为他似乎不认识“使用 OpenIddict”

如果有帮助，这是我收到错误的示例（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)
        {

这是我的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"
    }
  }
}

这很奇怪，因为我在可视化代码中打开的每个项目都有这个错误，所以我认为这与我的项目无关。

从 beta2 开始，OpenIddict 不再附带专用的DbContext您可以子类化，因为这种模式（从 ASP.NET Core Identity 继承）被证明是相当不切实际的。

相反，现在鼓励您直接继承IdentityDbContext并通过调用注册OpenIddict所需的实体集options.UseOpenIddict() from ConfigureServices:

项目.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>();
});

应用程序数据库上下文：

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);
    }
}