public Manufacturer(string name, string phone, string email, string address)
		{
			this.Name = name;
			this.Phone = phone;
			this.Email = email;
			this.Address = address;
			int max;
			using (var ctx = new PharmaContext())
			{
				if (ctx.Manufacturers.Count() == 0)
				{
					max = 0;
				}
				else
				{
					max = (ctx.Manufacturers.Max(p => p.ManufacturerID));
				}
				this.ManufacturerID = max + 1;
				ctx.Manufacturers.Add(this);
				ctx.SaveChanges();
				System.Diagnostics.Debug.WriteLine("New Manufacturer");
			}
		}
		private Ledger(string customer, int medicineID, int quantity)
		{
			this.Customer = customer;
			this.Quantity = quantity;
			int max;
			using (var ctx = new PharmaContext())
			{
				this.Medicine = ctx.Medicines.Where(m => m.MedicineID == medicineID).FirstOrDefault();
				this.Amount = this.Medicine.Price * quantity;
				if (ctx.Ledgers.Count() == 0)
				{
					max = 0;
				}
				else
				{
					max = (ctx.Ledgers.Max(p => p.Entry));
				}
				this.Medicine.Stock -= quantity;
				ctx.Ledgers.Add(this);
				ctx.SaveChanges();
			}
			this.Entry = max + 1;
		}
		public Dealer(string name, string phone, string email, string address)
		{
			this.Name = name;
			this.Phone = phone;
			this.Email = email;
			this.Address = address;
			int max;
			using (var ctx = new PharmaContext())
			{
				if (ctx.Dealers.Count() == 0)
				{
					max = 0;
				}
				else
				{
					max = (ctx.Dealers.Max(p => p.DealerID));
				}
				this.DealerID = max + 1;
				ctx.Dealers.Add(this);
				ctx.SaveChanges();
				System.IO.File.WriteAllText(@"C:\ZDrive\hetulDebug.txt", "Dealer has been called");
			}
		}
		public Medicine(string name, double price, int stock, int dealerID, int manufacturerID)
		{
			this.Name = name;
			this.Price = price;
			this.Stock = stock;
			int max;
			using (var ctx = new PharmaContext())
			{
				this.Dealer = ctx.Dealers.Where(d=>d.DealerID==dealerID).FirstOrDefault();
				this.Manufacturer = ctx.Manufacturers.Where(m => m.ManufacturerID == manufacturerID).FirstOrDefault();
				if (ctx.Medicines.Count() == 0)
				{
					max = 0;
				}
				else
				{
					max = (ctx.Medicines.Max(p => p.MedicineID));
				}
				this.MedicineID = max + 1;
				ctx.Medicines.Add(this);
				ctx.SaveChanges();
			}
			
		}