A specified Include path is not valid. The EntityType '' does not declare a navigation property with the name ''

Question

I wonder if you could help. I get the above error when I call .Include(). It breaks when I include tblMemberships.

this.dbContext.Confi         


        

Answer 1

When you write code like this:

db.ParentTable
    .Include("ChildTable")
    .Include("ChildOfChildTable");

You are saying include all entries from ChildTable that are keyed to ParentTable and also include all entries from ChildOfChildTable that are ALSO keyed to ParentTable. Instead you need to tell Entity Framework that ChildOfChildTable is beneath ChildTable in the hierarchy, like this:

db.ParentTable
    .Include("ChildTable.ChildOfChildTable");

So this means your code should be:

this.dbContext.Configuration.LazyLoadingEnabled = false;
List<tblCustomerInfo> customers = this.dbContext.tblCustomerInfoes
                                      .Include("tblUsers.tblMemberships")