public void EditTechnician(Technician tech, List <Service> newSkills, List <Service> oldSkills)
{
techCtr.Update(tech);
foreach (Service i in genLogic.GetAddedItems(oldSkills, newSkills))
{
techCtr.Add(i, tech);
}
foreach (Service i in genLogic.GetRemovedItems(oldSkills, newSkills))
{
techCtr.Remove(i, tech);
}
}