What is Namespace?

• Namespace  is a collection of classes  and  interfaces Namespace is a logical naming scheme for group related types.

•  A namespace can span multiple assemblies, and an assembly can define multiple namespaces. When the compiler needs the definition for a class type, it tracks through each of the different imported namespaces to the type name and searches each referenced assembly until it is found.

• Namespaces can be nested. This is very similar to packages in Java as far as scoping is concerned.