小编Ale*_*fel的帖子

在使用Entity Framework 4.3的Code First Migrations时,我得到了几个未处理的异常.

数据库上下文:

public class MyAppContext : DbContext
{
   public DbSet<Branch> Branches { get; set; }

   public MyAppContext()
   { }
}

实体:

public class Branch : IEntity<Guid>
{
    public Guid Id { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public bool Active { get; set; }
 }

数据库初始化程序:

public class MyAppInitializer : CreateDatabaseIfNotExists<MyAppContext>
{
   protected override void Seed(MyAppContext context)
   {
      context.Branches.Add(new Branch() { Id = branchId, Name …