Namespaces can be nested : Namespace « Language Basics « C# / CSharp Tutorial






using System; 
 
namespace NS1 { 
  class ClassA { 
     public ClassA() { 
       Console.WriteLine("constructing ClassA"); 
    } 
  } 
  namespace NS2 { // a nested namespace 
    class ClassB { 
       public ClassB() { 
         Console.WriteLine("constructing ClassB"); 
      } 
    } 
  } 
} 
 
class MainClass { 
  public static void Main() { 
    NS1.ClassA a = new NS1.ClassA(); 
 
    NS1.NS2.ClassB b = new NS1.NS2.ClassB();
  } 
}
constructing ClassA
constructing ClassB








1.5.Namespace
1.5.1.Namespace Introduction
1.5.2.Full qualify name
1.5.3.Simplest namespace with class definition
1.5.4.Declare a namespace
1.5.5.Demonstrate a namespace.
1.5.6.Use fully qualified class name
1.5.7.Two levels of Namespaces
1.5.8.Namespace with dot
1.5.9.Rename the namespaces
1.5.10.Namespaces prevent name conflicts
1.5.11.Namespaces are additive.
1.5.12.Namespaces can be nested
1.5.13.Demonstrate the :: qualifier.
1.5.14.The use of two namespaces
1.5.15.The use of namespace hierarchies
1.5.16.Creates a namespace with a single class
1.5.17.Same class name under different Namespaces