求助！ EF4.1 查询报错！
我先把问题说一下：

Schedule 是 Tasks 的一个外键, tasks.ScheduleId = Schedule.ScheduleId

EF 4.1 中的基本的定义代码如下：

C# code

public class Tasks    {        public int TaskId { get; set; }       public string TaskName { get; set; }        public DateTime StartDate { get; set; }        public string StartTime { get; set; }        public string EndTime { get; set; }        public DateTime EndDate { get; set; }        public virtual Schedule Schedule { get; set; }        public virtual ICollection<Schedule> Schedules { get; set; }        public virtual ICollection<Tag> Tags { get; set; }        public virtual UserInfo UserInfo { get; set; }    }    public class Schedule    {        public int ScheduleId { get; set; }        public int TaskId { get; set; }        public DateTime LastExecutionTime { get; set; }        public DateTime NextExecutionTime { get; set; }        public virtual Tasks Tasks { get; set; }    }  //Tasks            modelBuilder.Entity<Tasks>().HasKey(o => o.TaskId).ToTable("Tasks");            modelBuilder.Entity<Tasks>().Property(o => o.TaskId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);                       modelBuilder.Entity<Tasks>().Property(o => o.StartDate).IsOptional().HasColumnType("datetime2");            modelBuilder.Entity<Tasks>().Property(o => o.StartTime).IsRequired();            modelBuilder.Entity<Tasks>().Property(o => o.EndTime).IsRequired();            modelBuilder.Entity<Tasks>().Property(o => o.EndDate).IsOptional().HasColumnType("datetime2");            modelBuilder.Entity<Tasks>().Property(o => o.Desc).IsOptional().HasMaxLength(512);            modelBuilder.Entity<Tasks>().Ignore(o => o.Schedule);            // Schedule            modelBuilder.Entity<Schedule>().HasKey(o => o.ScheduleId).ToTable("Schedule");            modelBuilder.Entity<Schedule>().Property(o => o.ScheduleId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);            modelBuilder.Entity<Schedule>().Property(o => o.ScheduleTypeId).IsRequired();            modelBuilder.Entity<Schedule>().Property(o => o.LastExecutionTime).IsOptional().HasColumnType("datetime2");            modelBuilder.Entity<Schedule>().Property(o => o.NextExecutionTime).IsOptional().HasColumnType("datetime2");                 modelBuilder.Entity<Schedule>().HasRequired(o => o.Tasks).WithMany(o => o.Schedules).HasForeignKey(f => f.TaskId);       

现有业务需要，我要查一些 Task
条件是 task.userid == 1 并且 Task . Schedule.NextExecutionTime 小于指定的时间

查询的方法是: GetMany
基本的代码在下面。

C# code

 public virtual IEnumerable<T> GetMany(          Expression<Func<T, bool>> filter = null,          Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null,          string includeProperties = "")        {            IQueryable<T> query = dbSet;            if (filter != null)            {                query = query.Where(filter);            }            foreach (var includeProperty in includeProperties.Split                (new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))            {                query = query.Include(includeProperty);            }            if (orderBy != null)            {                return orderBy(query).ToList();            }            else            {                return query.ToList();            }        }       return taskRepository.GetMany(                                           filter: k => k.UserId == userId || k.Schedule.NextExecutionTime < nextExecutionTime,                                           orderBy: o => o.OrderBy(k => k.TaskId),                                           includeProperties: "Schedules,Tags"); 
 

好了。问题说清楚了。
我现在一查询的时候。就报错

报错内容： LINQ to Entities 不支持指定的类型成员“Schedule”。只支持初始值设定项、实体成员和实体导航属性。

[解决办法]
把数据库删除了.让系统自动生成下数据库看看结构.