If someone could give me an idea with it, it would really appreciate it. How can I get all Users (not related entities) that have records in the Connections Table and belong to a Company (Table) with an id predefined (let's say CompanyId=1), using Entity framework and linq to entities. I have defined my entities classes with foreign keys and navigation(entities) properties. I would rather lambda expressions methods.
This is the relational model:
Do you mean sth like this?
var users = dbContext.Users.
Where(usr => usr.UserTeams.Any(
usrTeam => usrTeam.Team.CompanyId == 1))
Where(usr => usr.Connections.Any());
So if you defined your foreign key constraints and your navigational properties correctly this should work:
var users = db.Companies.Include("TeamId")
.Include("UserId")
.Include("ConnectionId")
.Select(x=>x.Teams.Users.Username)
.where(x=>x.Teams.Users.Connections!=null && x.CompanyId==1).tolist();
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