public void CreateGroup(string name)
{
Group group = new Group { Name = name };
db.Group.InsertOnSubmit(group);
db.SubmitChanges();
AllGroupItems.Add(group);
}
public void DeleteGroup(Group group)
{
AllGroupItems.Remove(group);
db.Group.DeleteOnSubmit(group);
db.SubmitChanges();
}
public void CreateActivityGroup(Activity activity, Group group)
{
ActivityGroup activityGroup = new ActivityGroup();
db.ActivityGroup.InsertOnSubmit(activityGroup);
activity.ActivitiesGroupsRef.Add(activityGroup);
group.ActivitiesGroupsRef.Add(activityGroup);
db.SubmitChanges();
AllActivityGroupItems.Add(activityGroup);
}