public static void Create_Admin(User user) { ReadOnMember(); if (user.Isadmin) { User user1 = User.CreateUser(); Custumer custumer = new Custumer(); user1.Isadmin = true; user1.user_id = Method.FindMaxIsCustumer() + 1; data.members.Add(user1); Console.WriteLine("\nCreate Admin successfully"); custumer.id_custumer = user1.user_id; Console.WriteLine("Fill in user information"); Console.Write("Enter name Custumer: "); custumer.name_custumer = Method.RemoveWhitespace((Console.ReadLine().Trim())); Console.Write("Enter adress Custumer: "); custumer.adress_custumer = Method.RemoveWhitespace((Console.ReadLine().Trim())); Console.Write("Enter numberPhone Custumer: "); string str = Console.ReadLine(); while (!Method.Test_numberPhone(str)) { Console.Write("Enter again numberPhone Custumer: "); str = Console.ReadLine(); } custumer.number_phone = str; data.custumers.Add(custumer); PushInDATA(); } }