static void Main() { Console.WriteLine("Press <ENTER> to terminate client once the output is displayed."); Console.WriteLine(); // Create a client CalculatorClient client = new CalculatorClient(); // <snippet5> // AddAsync double value1 = 100.00D; double value2 = 15.99D; client.AddCompleted += new EventHandler <AddCompletedEventArgs>(AddCallback); client.AddAsync(value1, value2); Console.WriteLine("Add({0},{1})", value1, value2); // </snippet5> // SubtractAsync value1 = 145.00D; value2 = 76.54D; client.SubtractCompleted += new EventHandler <SubtractCompletedEventArgs>(SubtractCallback); client.SubtractAsync(value1, value2); Console.WriteLine("Subtract({0},{1})", value1, value2); // Multiply value1 = 9.00D; value2 = 81.25D; double result = client.Multiply(value1, value2); Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result); // Divide value1 = 22.00D; value2 = 7.00D; result = client.Divide(value1, value2); Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result); Console.ReadLine(); //Closing the client gracefully closes the connection and cleans up resources client.Close(); }