EF代码优先6“复用”多对多自参考

Question

我有一个实体是这样的：

public class Course 
{ 
    public int Id { get; set; } 
    public string Name { get; set; } 

    public virtual ICollection<Course> Prerequisites { get; set; } 
    public virtual ICollection<Course> Equivalents { get; set; } 

    public Course() 
    { 
     Prerequisites = new HashSet<Course>(); 
     Equivalents = new HashSet<Course>(); 
    } 
} 

我想创建不同的表，“先决条件”和“等价物”。 我如何配置它？

Answer 1

这将有助于

public class Course 
{ 

    public int Id { get; set; } 
    public String Name { get; set; } 

    [InverseProperty("PrerequisiteFor")] 
    public virtual ICollection<Course> Prerequisites { get; set; } 
    [InverseProperty("EquivalentTo")] 
    public virtual ICollection<Course> Equivalents { get; set; } 
    [InverseProperty("Equivalents")] 
    public virtual ICollection<Course> EquivalentTo { get; set; } 
    [InverseProperty("Prerequisites")] 
    public virtual ICollection<Course> PrerequisiteFor { get; set; } 

    public Course() 
    { 
     Prerequisites = new HashSet<Course>(); 
     Equivalents = new HashSet<Course>(); 
     PrerequisiteFor = new HashSet<Course>(); 
     EquivalentTo = new HashSet<Course>(); 

    } 
}