public MembersPage(Team team, ItemsPageViewModel <Team> parentVm, TeamDetailPage parentPage) : this(m => team.Members.Select(tm => tm.Id).Contains(m.Id))
{
Team = team;
ParentElement = team;
ParentVM = parentVm;
ParentPage = parentPage;
}
public AddMemberPage(Team parentElement, ItemsPageViewModel <Team> parentVM, TeamDetailPage parentPage, ItemsPageViewModel <Member> vm, MembersPage page) : this()
{
VM = vm;
ParentElement = parentElement;
ParentVM = parentVM;
ParentPage = parentPage;
MembersPage = page;
}