public void AddNewContact()
{
ListItem newItem = contactsList.AddItem(new ListItemCreationInformation());
Customer customer = CustomerFactory.GetRandomCustomer();
newItem["FirstName"] = customer.FirstName;
newItem["Title"] = customer.LastName;
newItem["Company"] = customer.Company;
newItem["Email"] = customer.EmailAddress;
newItem["WorkPhone"] = customer.WorkPhone;
newItem["HomePhone"] = customer.HomePhone;
newItem.Update();
clientContext.ExecuteQuery();
}