How to deep clone child objects of an object using C# icloneable

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C#

clone

entity-framework

Hi,

I am working on a requirement. So, basically there are three entities in EF and lets consider them as:
1) Employee Table (2) Primary_Address Table (3) Secondary_Address Table

Here, Primary_Address Table and Secondary_Address Table are in 1-1 relationship with Employee Table.

I want to create a clone of Employee along with its child objects - Primary_Address and Secondary_Address.

Am using "Deep Cloning" using ICloneable interface. I can be able to clone the "Employee" object but the child objects are always NULL.

What I have tried:

Employee Entity Structure:

;
[Table("Employee")]
public class EmployeeEntity : ICloneable
{
        [Key]
        [Column("Id")]
        public int Id { get; set; }

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

        public PrimaryAddressEntity PrimaryAddress { get; set; }
        public SecondaryAddressEntity SecondaryAddress { get; set; }

        public EmployeeEntity Clone() { return (EmployeeEntity)this.MemberwiseClone(); }
        object ICloneable.Clone() { return Clone(); }

}

Primary Address Entity Structure:

[Table("PrimaryAddress")]
public class PrimaryAddressEntity
{
        [Key]
        [Column("PrimaryAddrId")]
        public int PrimaryAddrId { get; set; }

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

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

        [ForeignKey("EmployeeId")]
        public EmployeeEntity Employee  { get; set; }

}

Secondary Address Entity Structure:

[Table("SecondaryAddress")]
public class SecondaryAddressEntity
{
        [Key]
        [Column("SecondaryAddrId")]
        public int SecondaryAddrId { get; set; }

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

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

        [ForeignKey("EmployeeId")]
        public EmployeeEntity Employee  { get; set; }

}

Now, in "cloning" operation, am doing like this to test if everything is working fine or not:

EmployeeEntity testObj = FetchEmployee("100");

EmployeeEntity cloneTestObj = testObj.Clone();
cloneTestObj.Id = 0;
cloneTestObj.EmployeeName = "Agnib";
AddEmployee(cloneTestObj);

public EmployeeEntity FetchEmployee(string empId)
{
  //return dbContext.Employees.Where(e => e.Id == System.Convert.ToInt32(empId)).FirstOrDefault();

  return dbContext.Employees.Where(e => e.Id == System.Convert.ToInt32(empId)).Include(p=>p.PrimaryAddress).Include(s=>s.SecondaryAddress).FirstOrDefault();
}

public bool AddEmployee(EmployeeEntity employeeEntity)
{
  dbContext.Employees.Add(employeeEntity);
  return dbContext.SaveChanges() > 0;
}

In this approach, I can be able to create a clone of the Employee object but the child objects (PrimaryAddress and SecondaryAddress) are coming as NULL while am fetching on the basis of EmployeeId.

I must be doing something wrong but cannot be able to figure it out.
So, if anyone can help me in this.

Thank you all.
Take care.