LINQ的包括不工作

Question

我有这样的LINQ表达

ActionPlan 
    .Include(x => x.Goal) 
    .Include(x => x.Responsibles) 
    .Include(x => x.Goal.EducationalPlan) 
    .AsNoTracking() 
    .Where(x => x.State == State.Active && x.Goal.State == State.Active && x.Goal.EducationalPlan.State == State.Active) 
    .Where(x => x.Responsibles.Any(r => r.PersonId == pes_id)) 
    .Distinct() 
    .Select(x => x.Goal) 
    .ToList(); 

的包括EducationalPlan的是不工作的，为什么？所有其他工作都很规范， EducationPlan是一个对象而不是列表。

Answer 1

对于多层次的，你应该是这样的：

ActionPlan 
    .Include(x => x.Goal) 
    .Include(x => x.Responsibles) 
    .Include(x => x.Goal.Select(y => y.EducationalPlan)) 
    .AsNoTracking() 
    .Where(x => x.State == State.Active && x.Goal.State == State.Active && x.Goal.EducationalPlan.State == State.Active) 
    .Where(x => x.Responsibles.Any(r => r.PersonId == pes_id)) 
    .Distinct() 
    .Select(x => x.Goal) 
    .ToList(); 

或者试试这个：

ActionPlan 
    .Include(x => x.Goal) 
    .Include(x => x.Responsibles) 
    .Include("Goal.EducationalPlan") 
    .AsNoTracking() 
    .Where(x => x.State == State.Active && x.Goal.State == State.Active && x.Goal.EducationalPlan.State == State.Active) 
    .Where(x => x.Responsibles.Any(r => r.PersonId == pes_id)) 
    .Distinct() 
    .Select(x => x.Goal) 
    .ToList();