实体框架：无效的列名称 *_ID 1

我正在尝试为几个名为 ' 的表实现 DbContextEmployee' and 'Department' 员工和部门之间的关系是多对一的。即部门可以有很多员工。

下面是我设计的EntityFramework类（CodeFirst方法）

    [Table("Employee")]
    public class Employee
    {
        [DatabaseGenerated(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.Identity)]
        public int Id { get; set; }

        [Column("Name")]
        public string Name { get; set; }

        [Column("Department_ID")]        
        public int Department_ID { get; set; }

        public virtual Department Department { get; set; }
    }

[Table("Department")]
    public class Department
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public int ID { get; set; }

        [Column("Name")]        
        public string Name { get; set; }

        public virtual ICollection<Employee>  Employees { get; set; }
    }

添加员工记录时出现以下异常

"Invalid column name 'Department_ID1'." 

我不确定为什么 EF 指的是Department_ID1。是否需要添加配置OnModelCreating的方法DbContext?

我用的是EF版本6.1.1

我的也遇到了这个问题EF one-many交易的地方one has a List of the many属性，而我的映射没有指定该属性。例如：

public class Notification
{
    public long ID { get; set; }     

    public IList<NotificationRecipient> Recipients { get; set; }
}

then

public class NotificationRecipient
{
    public long ID { get; set; }

    public long NotificationID { get; set; }

    public Notification Notification { get; set; }
}

然后在我的映射中，导致Exception (the 不正确 way):

builder.HasOne(x => x.Notification).WithMany()
    .HasForeignKey(x => x.NotificationID);

是什么解决了这个问题（correct方式）指定WithMany财产：

builder.HasOne(x => x.Notification).WithMany(x => x.Recipients)
    .HasForeignKey(x => x.NotificationID);