不可为null的属性必须包含EF关系上的非null值警告

Question

C#编译器在上显示Non-nullable property must contain a non-null value

• EFrelationships
• DbSet

根据本文档：使用可为null的引用类型，我可以使用消除DbSet的此警告

public class DataContext : DbContext
{
public DataContext(DbContextOptions options) : base(options) {}

public DbSet<Customer> Customers => Set<Customer>();
public DbSet<Order> Orders => Set<Order>();
}

对于EFrelationships以及下面的示例(不使用#pragma warning disable CS8618(，消除此警告的最佳方法是什么？

public class Customer
{
public Guid CustomerId { get; set; } = Guid.NewGuid();
public string Username { get; set; }
public virtual IEnumerable<Order> Orders { get; set; }
public Customer(string username)
{
// still gets warning for `Orders`
Username = username;
}
}

在关系的另一边：

public class Order
{
public Guid OrderId { get; set; } = Guid.NewGuid();
public string Description { get; set; }
public Guid CustomerId { get; set; }
public virtual Job Job { get; set; }
public Log(string description, Guid customerId)
{
// still gets warning for `Job`
Description = description;
CustomerId = customerId;
}
}

Answer 1

回答我自己的问题时，我认为这是删除EFrelationships:中警告的最合适方法

public class Customer
{
public Guid CustomerId { get; set; } = Guid.NewGuid();
public string Username { get; set; }
public virtual IEnumerable<Order> Orders { get; set; } = null!;
public Customer(string username)
{
Username = username;
}
}

在关系的另一边：

public class Order
{
public Guid OrderId { get; set; } = Guid.NewGuid();
public string Description { get; set; }
public Guid CustomerId { get; set; }
public virtual Job Job { get; set; } = null!;
public Log(string description, Guid customerId)
{
Description = description;
CustomerId = customerId;
}
}

但如果有人有更好的想法，请随时分享。