Multiple foreign keys within same table using CodeFrist Enitty Framework and Fluent API

This example shows how to work with multiple foreign key referred to the same table using CodeFirst Entity Framework (Inverse Navigation Properties 
)

Parent Table (Branch) has two foreign keys (Primary Contact and Secondary Contact) referring to the Child Table (Contact).

Branch
BranchID	guid
Branch Name	varchar
PrimaryContactID	guid,null
SecondaryContatID	guid,null

Contact
ContactID	guid
Firstname	varchar
LastName	varchar
Address	varchar
Gender	char

First of all we need to create the Branch Class

 public class Branch

    {

        public Guid BranchID { get; set; }

        public string BranchName { get; set; }

        public Nullable<Guid> PrimaryContactID { get; set; }

        public Nullable<Guid> ScondaryContactID{ get; set; }

        public Contact PrimaryContact { get; set; }

        public Contact SecondaryContact { get; set; }

        

    }

Then creating the Contact Class

 public class Contact

    {

        public Guid ContactID { get; set; }

        public string Firstname { get; set; }

        public string Lastname { get; set; }        public ICollection<Branch> PrimaryContactFor { get; set; }

        public ICollection<Branch> ScondaryContactFor{ get; set; }

        

    }

When configuring in the fluent API below shown coding is used.

protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<Branch>().HasOptional(b => b.PrimaryContact).WithMany(a => a.PrimaryContactFor).HasForeignKey(b=>b.PrimaryContactID);
            modelBuilder.Entity<Branch>().HasOptional(b => b.SecondaryContact).With Many (a => a.ScondaryContactFor).HasForeignKey(b=>b.ScondaryContactID);

        }

Happy Coding :)