private async void Friend_ItemTapped(object sender, ItemTappedEventArgs e)
        {
            Trace.WriteLine("DAAN");
            bool MemberAlready = false;
            User selectedUser  = FriendsList.SelectedItem as User;

            foreach (int x in GroupMembers)
            {
                Trace.WriteLine("Member id " + x);
                if (x == selectedUser.ID)
                {
                    MemberAlready = true;
                    break;
                }
            }
            if (!MemberAlready)
            {
                var action = await DisplayAlert((FriendsList.SelectedItem as User).Username, "Add to Participants?", "Yes", "No");

                if (action)
                {
                    gc.AddRemoveMember(group.Id, selectedUser.ID, "add", this, uc.currentUser.Username, uc.currentUser.ID);
                }
            }
            else
            {
                var action = await DisplayAlert((FriendsList.SelectedItem as User).Username, "Remove as Participant?", "Yes", "No");

                if (action)
                {
                    gc.AddRemoveMember(group.Id, selectedUser.ID, "remove", this, uc.currentUser.Username, uc.currentUser.ID);
                }
            }
        }