c# – 找不到类型或命名空间名称“OpenIddictDbContext <,,>”

我有个问题.我今天早上打开了我的项目并得到了错误：

类型或命名空间名称’OpenIddictDbContext< ,,>‘找不到(你错过了使用指令或程序集引用吗？)[netcoreapp1.1]

我恢复并构建项目时发生此错误.这很奇怪,因为我在我的project.json文件中有“OpenIddict”：“1.0.0- *”,我正在使用引用：using OpenIddict;

这个问题在我的项目中到处都会出现问题,因为他似乎没有认识到“使用OpenIddict”

如果它有帮助,这是我得到错误的例子(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>
    {

要么

 //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,因为我在可视代码中打开的每个项目都有这个错误,所以我不认为它与我的项目有关.

解决方法:

从beta2开始,OpenIddict不再带有可以子类化的专用DbContext,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,现在鼓励您直接从IdentityDbContext继承并通过从ConfigureServices调用options.UseOpenIddict()来注册OpenIddict所需的实体集：

project.json：

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

启动：

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);
    }
}

标签：c,visual-studio,asp-net-mvc,asp-net-core,openiddict
来源： https://codeday.me/bug/20190611/1218385.html