static void Main(string[] args) { for (; ;) { //Buyer b = new Buyer(); BuyerBO b1 = new BuyerBO(); SellerBO s1 = new SellerBO(); itembo ibo = new itembo(); Console.WriteLine("Menu 1:Buyer\n 2:Display Buyer \n 3:Seller\n 4:Display Seller"); Console.WriteLine("enter your choice:"); int ch = Convert.ToInt32(Console.ReadLine()); bool flag = true; switch (ch) { case 1: Console.WriteLine("1:register\n2:Login"); int op = Convert.ToInt32(Console.ReadLine()); switch (op) { case 1: int mob; string n, pd, add, email; Console.WriteLine("enter user name"); n = Console.ReadLine(); Console.WriteLine("enter email "); email = Console.ReadLine(); Console.WriteLine("enter password"); pd = Console.ReadLine(); Console.WriteLine("Enterr your address"); add = Console.ReadLine(); Console.WriteLine("enter 10 digit mobile number:"); mob = Convert.ToInt32(Console.ReadLine()); b1.CreateBuyer(n, email, pd, add, mob); Console.WriteLine("the elements are saved:"); // Console.WriteLine("display emp details:"); break; case 2: Console.WriteLine("Enter username: "******"enter password:"******"login Successful"); while (true) { Console.WriteLine("1.Electronic 2.Homeappliances 3.Accessories "); Console.WriteLine("1:Display 2:Search \n 3:exit"); int c = Convert.ToInt32(Console.ReadLine()); if (c == 1) { b1.display(); } else if (c == 2) { b1.Search(); } else { break; } } } else { Console.WriteLine("invalid credentials"); } break; } break; case 2: b1.DisplayItems(); break; case 3: Console.WriteLine("1:register\n2:Login"); int op1 = Convert.ToInt32(Console.ReadLine()); switch (op1) { case 1: int mob1; string n1, pd1, co, add1, email1; Console.WriteLine("enter user name"); n1 = Console.ReadLine(); Console.WriteLine("enter email "); email1 = Console.ReadLine(); Console.WriteLine("enter password"); pd1 = Console.ReadLine(); Console.WriteLine("Enterr your address"); add1 = Console.ReadLine(); Console.WriteLine("enter 10 digit mobile number:"); mob1 = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("enter the company name:"); co = Console.ReadLine(); s1.CreateSeller(n1, email1, pd1, add1, mob1, co); Console.WriteLine("the elements are saved:"); break; case 2: Console.WriteLine("Enter username: "******"enter password:"******"login Successful"); while (true) { Console.WriteLine("1.Electronic 2.Homeappliances 3.Accessories "); Console.WriteLine("Menu \n 1:Add Prod \n 2:Display \n 3:Exit \n Enter your choice:"); int ch3 = Convert.ToInt32(Console.ReadLine()); if (ch3 == 1) { //Console.WriteLine("enter the no categories to add:"); //int cat = Convert.ToInt32(Console.ReadLine()); ////s1.additems(); //for (int i = 0; i < cat; i++) //{ Console.WriteLine("enter Category Name:"); string Cna = Console.ReadLine(); Console.WriteLine("enter Category id in num::"); int Cid = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("Description of Category"); string des = Console.ReadLine(); Console.WriteLine("enter the sub_)category name:"); string Subnmae = Console.ReadLine(); Console.WriteLine("enter the Sub Categry id in num:"); int sid = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("enter Item N0 in num:"); int Ino = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("enter the item name:"); string itname = Console.ReadLine(); Console.WriteLine("enter the price of item:"); int price = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("enter the item description:"); string desit = Console.ReadLine(); Console.WriteLine("no of stock:"); int soc = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("remanrkjs"); string re = Console.ReadLine(); ibo.additems(Ino, price, itname, desit, soc, re, Cna, Cid, Subnmae, des, sid, bid1); //} //break; } else if (ch3 == 2) { ibo.Display(); } else if (ch3 == 3) { break; } else { Console.WriteLine("invalid"); } break; } } else { Console.WriteLine("invalid credentials"); } break; } break; case 4: s1.DisplayItems(); break; } } }