I have created two tabled called Customer and destination . CustomerCode is a primary key in Customer and Foreign key is Destination .when i delete a customer the destination will be deleted.
public class tblCustomerDetails
{
[Key]
public string CustomerCode { get; set; }
public string CustomerName { get; set; }
}
public class tblDestinationDetails
{
[Key]
public string DestinationCode { get; set; }
[ForeignKey("tblCustomerDetails")]
public string CustomerCode { get; set; }
public tblCustomerDetails tblCustomerDetails { get; set; }
public string DestinationName { get; set; }
}
public class tblOrderDetails
{
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
[Key]
public int SrNo { get; set; }
public int OrderNo { get; set; }
[ForeignKey("tblCustomerDetails")]
public string CustomerCode { get; set; }
public tblCustomerDetails tblCustomerDetails { get; set; }
[ForeignKey("tblDestinationDetails")]
public string DestinationCode { get; set; }
public tblDestinationDetails tblDestinationDetails { get; set; }
}
Your probable model will be
public class Customer
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int CustomerCode { get; set; }
public virtual Destination destination { get; set; }//relationship with Destination
}
public class Destination
{
public virtual Customer customer { get; set; }//relationship with Customer
[Key, ForeignKey("User")]
public int CustomerCode { get; set; }
}
You need to use the fluent API and add following code in DBContext
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Customer>()
.HasOptional(d => d.Destination)
.WithOptionalDependent()
.WillCascadeOnDelete(true);
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.