same class in different namespaces

Question

A class in .Net Framework cannot belong to multiple Namespaces. One class should belong to only one Namespace. VB.NET does not allow two classes with the same name to be used in a program.
Are the above statement correct? If yes then why? Why a class can't be a part of different namespace?

Deepak Verma · Answer

Classes in different namespaces can have similar names . But you should not import the namespaces otherwise it will show error like : 'class1' is ambiguous imported from the namespaces or types 'ConsoleApplication1.B ConsoleApplication1.A'. where ConsoleApplication1 - application name A & B - name of namespaces class1 - name of class I hope following Code (containing error) will help you to understand the topic : * Follow the comments in program to get errors free code Imports System Imports ConsoleApplication1.A 'Dont use this code Imports ConsoleApplication1.B 'Dont use this code 'Use Imports ConsoleApplication1 Namespace A Class class1 Public Shared Sub Show() Console .WriteLine( Namespace A ) End Sub End Class End Namespace Namespace B Class class1 Public Shared Sub Show() Console .WriteLine( Namespace B ) End Sub End Class End Namespace Module Module1 Sub Main() class1.Show() 'Use A.class1.Show() for Namespace A class1.Show() 'Use B.class2.show() for Namespace B Console .Read() End Sub End Module Note: you can also use Full path to each sub/function as ConsoleApplication1.A.class1.show() to call show() without importing the Application. It'll work also.

Rohatash Kumar · Answer

Hi A class can be the part of different namespace. we take two namespace and one class name belong both namespace. The below code define it. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace mukhi { class zzz { public static void abc() { System. Console .WriteLine( abc in zzz  ); } static void Main() { vijay. zzz .abc(); abc(); } } } namespace vijay { class zzz { public static void abc() { System. Console .WriteLine( abc ); } } } Hope it will help u and give you right direction. Thanks Rohatash kumar