public static void getExpresion() { NewCustomer nc1 = new NewCustomer("", ""); try { if (IsNullOrWhiteSpace(nc1.Address)) { throw new ArgumentException(message: "No address found", paramName: nameof(nc1.Address)); } } catch (ArgumentException aex) { Console.WriteLine(aex.Message); } }
public static void Add(this Sales e, NewCustomer s) => e.Add_Customer(s);
static void Main(string[] args) { int x = 4; //OldCustomer use for c# below 6.0 //NewCustomer use for c# 6.0 string feature = string.Empty; feature = "-------------------read only auto property--------------------"; Console.WriteLine($"{feature}"); //Before C# 6.0 OldCustomer oldCus = new OldCustomer(); oldCus.set_customer_name("Barack", "Obama"); Console.WriteLine("First Name: {0}, Last Name: {1}", oldCus.FirstName, oldCus.LastName); //After C# 6.0 NewCustomer newCus = new NewCustomer("Donald", "Trump"); Console.WriteLine($"First Name: {newCus.FirstName}, Last Name: {newCus.LastName}"); feature = "\n---------------Expression bodied member function--------------"; Console.WriteLine($"{feature}"); //Before C# 6.0 Console.WriteLine("Full Name: {0}", oldCus.FullName); //After C# 6.0 Console.WriteLine($"Full Name: {newCus.FullName}"); feature = "\n------------------Using static in namespace------------------"; Console.WriteLine($"{feature}"); //Before C# 6.0 => import all types from a namesspace Console.WriteLine("Sqrt of {0}: {1}", x, Math.Sqrt(x)); //After C# 6.0 => import only member functionns from a namesspace Console.WriteLine($"Sqrt of {x}: {Sqrt(x)}"); feature = "\n-------------- Null-conditional operators---------------------"; Console.WriteLine($"{feature}"); NewCustomer nc1 = new NewCustomer("", ""); //Before C# 6.0 if (nc1 != null) { var result = nc1.Address ?? "Newly Set"; Console.WriteLine("Value: {0}", result); } //After C# 6.0 var res = nc1?.Address ?? "Hello"; Console.WriteLine($"Value: {res}"); feature = "\n----------------String Interpolation---------------------"; Console.WriteLine($"{feature}"); Console.WriteLine($"Customer Name: {nc1.FullName}, Total Amount: {nc1.GetTotalAmount()}"); feature = "\n----------------Expression---------------------"; Console.WriteLine($"{feature}"); getExpresion(); feature = "\n----------------Index Initializer---------------------"; Console.WriteLine($"{feature}"); //Before C# 6.0 List <string> messages = new List <string> { "Hello - 120", "Hello - 90", "Hello - 130" }; //After C# 6.0 Dictionary <int, string> dic = new Dictionary <int, string> { [120] = "Hello - 120", [90] = "Hello - 90", [130] = "Hello - 130" }; //Console.WriteLine(dic[120]); foreach (var item in dic) { Console.WriteLine($"Index: {item.Key}, Value: {item.Value}"); } feature = "\n----------------Collection Initializer---------------------"; Console.WriteLine($"{feature}"); var trans = new Sales() { new NewCustomer("James", "Wodman"), new NewCustomer("Radiq", "Fables"), new NewCustomer("Doz", "Huber") }; Console.ReadKey(); }