Nested Namespaces in C#

When a Namespace is declared inside the other namespace that declaration is called nesting namespaces. You can nest namespaces to any level you want. There are 2 ways to nest the namespaces which are as under:
  • We have nested namespaces to 3 levels. The fully qualified name of Customer class in the below code snippet is ABC.XYZ.PQR.Customer
using System;

namespace ABC

{

    namespace XYZ

    {

        namespace PQR

        {

            //Our Types(Classes,Interfaces,Structures,Delegates,Enumerations etc..)

            class Customer

            {

                //Class code

            }

        }

    }

}

  • Another approach to nest namespaces is using the dot operator.

using System;
namespace ABC.XYZ.PQR //Nesting namespaces using dot operator

{

    // Types(Classes,Interfaces,Structures,Delegates,Enumerations etc..)

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