首先是
public class Address
{
public string FirstName { get; set; }
public string LastName { get; set; }
public string Addr { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string ZipCode { get; set; }
public string Email { get; set; }
public string Phone { get; set; }
public string State { get; set; }
public string Country { get; set; }
}
在来order
public class Order
{
public int OrderId { get; set; }
public string OrderNumber { get; set; }
public DateTime OrderData{get;set;}
public string DisposeDate { get; set; }public Address ShipAddress { get; set;}
public Address BillAddress { get; set; }
}
然后我们modelbuilder
//BillAddress
modelBuilder.Entity<Order>().Property(i => i.BillAddress.Addr).HasColumnName("BillAddr")
.HasMaxLength(128);//A:注意这里
modelBuilder.Entity<Order>().Property(i => i.BillAddress.Street).HasColumnName("BillStreet")
.HasMaxLength(128);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.City).HasColumnName("BillCity")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.ZipCode).HasColumnName("BillZipCode")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.State).HasColumnName("BillState")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.Country).HasColumnName("BillCountry")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.Email).HasColumnName("BillEmail")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.Phone).HasColumnName("BillPhone")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.FirstName).HasColumnName("BillFirstName")
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.BillAddress.LastName).HasColumnName("BillLastName")
.HasMaxLength(50);//ShipAddress
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.Addr).HasColumnName("ShipAddr")
.HasMaxLength(128)
.IsRequired();//B:注意这里
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.Street).HasColumnName("ShipStreet")
//.IsRequired()
.HasMaxLength(128);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.City).HasColumnName("ShipCity")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.ZipCode).HasColumnName("ShipZipCode")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.State).HasColumnName("ShipState")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.Country).HasColumnName("ShipCountry")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.Email).HasColumnName("ShipEmail")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.Phone).HasColumnName("ShipPhone")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.FirstName).HasColumnName("ShipFirstName")
// .IsRequired()
.HasMaxLength(50);
modelBuilder.Entity<Order>().Property(i => i.ShipAddress.LastName).HasColumnName("ShipLastName")
//.IsRequired()
.HasMaxLength(50);
注意A和B的地方，我们A标识可以为空，B不允许为空。
生成数据库后，问题出现了。
不知道你注意到了吗，两个地方都为不允许为空，怎么回事，求解...
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