无法使用实体框架使用操作创建控制器

Question

I've created a Model using Model first and Entity Data Model of Entity Framework. Well, when I want to create the controller (right click on controllers folder Add->controller->WebApi 2 Controller with actions using EF) then I become after defining the inputfields an error message: there was an error getting the type "WebApi.Models.QR_Name". Try rebuilding the project. The same error getting by the other Model class. How can I solve this??

---

EDIT:

I have two classes: //Group

namespace WebApi.Models
{
    public partial class QR_Group
    {
        public QR_Group()
        {
            this.QR_Name = new HashSet<QR_Name>();
        }

        public int Id { get; set; }
        public string name { get; set; }
        public string code { get; set; }

        public virtual ICollection<QR_Name> QR_Name { get; set; }
    }
}

//Name

namespace WebApi.Models
{
    public partial class QR_Name
    {
        public int Id { get; set; }
        public string firstname { get; set; }
        public double maxAge { get; set; }
        public int QR_GroupId { get; set; }

        public virtual QR_Group QR_Group { get; set; }
    }
}

Additionally is here the Context class:

namespace WebApi.Models
{
    public partial class WebApiContext : DbContext
    {
        public WebApiContext()
            : base("name=WebApiContext")
        {
        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            throw new UnintentionalCodeFirstException();
        }

        public virtual DbSet<QR_Group> QR_Groups { get; set; }
        public virtual DbSet<QR_Name> QR_Names { get; set; }
    }
}

Answer 1

在创建控制器之前，请按Ctrl + Shift + B组合键来构建您的解决方案，或转到“构建->构建解决方案”，然后尝试创建控制器。