Defining many to many relation in code first entity framework

Question

I have 3 classes in my model as you can see below.

[Table("UserProfile")]
public class UserProfile
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseG         


        

Answer 1

Try doing it like this:

[Table("UserProfile")]
public class UserProfile
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public string UserName { get; set; }

    [InverseProperty("UserProfiles")]
    public IList MartialArts { get; set; }
}

[Table("MartialArt")]
public class MartialArt
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public string Name { get; set; }

    public string Description { get; set; }

    public string IconPath { get; set; }

    public string ImagePath { get; set; }

    [InverseProperty("MartialArts")]
    public IList UserProfiles { get; set; }
}