Question

概述：我有两个项目，一个ASP.NetCore Web API和一个EF 6.1类库。类库包含与我的数据库交互并返回对象的管理器类。

我遵循本教程进行依赖注入，但它没有解决我的项目中的场景，其中EF位于单独的类库中，并且通过管理器类进行交互：

https://docs.microsoft.com/en-us/aspnet/core/data/entity-framework-6

我按照以下方式工作（但我不高兴，因为我不想重载连接字符串）：

    public class AccountManager
    {
        private static string ConnectionString = LibDataEntities.ConnectionString;

        public static AccountDC AuthenticateAccount(string EmailAddress, string Password)
        {
            LibData.Model.AccountDC account = null; 

            using (var db = new LibDataEntities(ConnectionString))
            {
                var qry = (from accounts in db.Accounts
                           where accounts.IsAdmin == true
                           && accounts.Active == true
                           && accounts.Email == EmailAddress
                           && accounts.Password == Password
                           select new LibData.Model.AccountDC
                           {
                               Active = accounts.Active,
                               Email = accounts.Email,
                               FirstName = accounts.FirstName,
                               Id = accounts.Id,
                               IsAdmin = accounts.IsAdmin,
                               IsSuperAdmin = accounts.IsSuperAdmin,
                               LastName = accounts.LastName,
                               LibraryId = accounts.LibraryId,
                               Password = accounts.Password
                           }).FirstOrDefault();

                if (qry != null)
                {
                    account = new LibData.Model.AccountDC();
                    account = qry;
                }
            }

            return account;
        }
}


   public partial class LibDataEntities
   {
      public static string ConnectionString;

      public LibDataEntities(string connectionString) : base(connectionString)
      {
      }
   }

  public Startup(IHostingEnvironment env)
  {            
     // Set connection string in Manager Project
     LibData.Manager.Entities.LibDataEntities.ConnectionString = Configuration.GetConnectionString("LibDataEntities");

  }

是否可以与类库管理器交互而不必重载连接字符串（例如下面的示例）？

using (var db = new LibDataEntities())

FWIW：我不想重载连接字符串的原因是因为这个类库被非asp.netcore应用程序使用，其中Web.Config已经包含连接字符串。

以下是我尝试的一些新代码但没有成功（如下面的回复中所示：

        public void ConfigureServices(IServiceCollection services)
    {
        services.AddDistributedMemoryCache();
        services.AddSession();
        services.AddAuthorization();
        services.AddMvc(options =>
        {
            options.Filters.Add(new ExceptionFilter());
        });
        services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
        services.AddMvcGrid();

        services.AddScoped(_ => new AccountManager());
        services.AddScoped<LibDataEntities>(_ => new LibDataEntities(Configuration.GetConnectionString("LibDataEntities")));

    }

    private readonly AccountManager _am;
    public HomeController(AccountManager am)
    {
        _am = am;
    }

来自控制器：

LibData.Model.AccountDC account = _am.AuthenticateAccount(lvm.Email, lvm.Password);

如何将.NetCore中的连接字符串传递给EF类库

0 个答案: