private AvatarManager()
{
Images = new List <Avatar>(StaffManager.GetInstance().Staffs.Select(x => x.Image));
Images.Add(new Avatar()
{
ImageName = "User_12.jpg"
});
}
private ProfessionManager()
{
Professions = new ObservableCollection <Profession>(StaffManager.GetInstance().Staffs.Select(x => x.Profession));
}