Question

得到了这个工作:

public partial class User
{
public long ID;
public long Active;
[Required]
public string Name;
}

void ObjectContextDeactivateUser(User entity)
{
   /* entity instance has set ID = 3, other props are null */
   /* context is ObjectContext */
   context.Users.Attach(entity);
   entity.Active = 0;
   context.ApplyCurrentValues("Users", entity);
   context.SaveChanges();
}

Is there a way to update that s row Active column using DbContext? Any way I try, I get ValidationError that Name property is required.

Answer 1

您必须关闭全球验证, 才能让此工作 :

void ObjectContextDeactivateUser(User entity)
{
   context.Configuration.ValidateOnSaveEnabled = false;
   context.Users.Attach(entity);
   entity.Active = 0;
   context.SaveChanges();
}

全球验证不支持部分改动的验证。

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