... System;class Format {static void Main() {Console.WriteLine("|{0:C}|{1:C}|", 1 . 23 , -1 . 23 );Console.WriteLine("|{0:D}|{1:D4}|", 1 23 , - 1 23 );Console.WriteLine("|{0:F}|{1:F4}|", ... value; } 20 Chapter 2: Classes, Objects, and Namespaces■ 20 Console.WriteLine( id.GetLastName()+ 21 NameSeparator+id.GetFirstName() ); 22 } 23 } 24 }To produce an executable program in C#, one ... NB.cs /reference:NA.dll 26 Chapter 2: Classes, Objects, and Namespaces■additional errors are generated on lines 8, 9, 13, 15, 16, 20 , 22 , and 23 . In fact, all linesfrom 7 to 25 , inclusively, no...