public ActionResult Create(Customer_Company customer_Company)
        {
            if (ModelState.IsValid)
            {
                db.Customer_Company.Add(customer_Company);
                db.SaveChanges();
                return RedirectToAction("Index","Customers");
            }

            ViewBag.CompanyID = new SelectList(db.Company, "CompanyID", "CompanyName", customer_Company.CompanyID);
            ViewBag.CustomerID = new SelectList(db.Customer, "CustomerID", "FirstName", customer_Company.CustomerID);
            return View(customer_Company);
        }
        public ActionResult Edit( Customer_Company customer_Company)
        {
            if (ModelState.IsValid)
            {
                db.Entry(customer_Company).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.CompanyID = new SelectList(db.Company, "CompanyID", "CompanyName", customer_Company.CompanyID);
            ViewBag.CustomerID = new SelectList(db.Customer, "CustomerID", "FirstName", customer_Company.CustomerID);
            return View(customer_Company);
        }