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What are namespaces, and how they are used?

  •  In .Net framework namespaces are used to manage classes. 
  •  The Key difference between .Net namespaces and java packages is that namespace doesn't define the physical layout of source file while java packages do. 
  •  Namespace define logical structure of the code. 
  •  Namespaces can be utilized via using keyword, in .net framework, many class have their namespace defined such as System.Net. 
  •  We can create our own C# source files which can relate to multiple projects.