如何在实体框架中的一个事务中更新父子表

Question

假设，我有以下父表结构，

public partial class CustomerDetail
    {
        public CustomerDetail()
        {
            this.DependentDetails = new HashSet<DependentDetail>();

        }

        public int CustomerId { get; set; }
        public string Title { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Gender { get; set; }


        public virtual ICollection<DependentDetail> DependentDetails { get; set; }

    }

而子表结构是，

 public partial class DependentDetail
    {
        public int DependentId { get; set; }
        public Nullable<int> CustomerId { get; set; }
        public string Relationship { get; set; }
        public string Gender { get; set; }
        public Nullable<System.DateTime> DateOfBirth { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }

        public virtual CustomerDetail CustomerDetail { get; set; }
    }

如果我想使用实体框架更新两个表，该怎么做？

请提出建议。

Answer 1

在使用实体框架向数据库插入新记录时

var customer=new CustomerDetail();
customer.Title ="Customer";
customer.FirstName ="First";
customer.LastName ="Last";
customer.Gender ="Male";
var dependent=new DependentDetail();
dependent.Relationship ="Test";
.
.
.
customer.DependentDetails.Add(dependent);

while updating dependent

var customer=Repository.find(CustomerId);
//update customer details here
var dependent=customer.DependentDetails.where(x=>x.DependentId ==DependentId).FirstOrDefault();
dependent.RelationShip="Test";

///call save function