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Question :

What is the difference between shadow and override

Answer :

Shadowing :- This is a VB.Net Concept by which you can provide a new implementation for the base class member without overriding the member. You can shadow a base class member in the derived class by using the keyword "Shadows". The method signature,access level and return type of the shadowed member can be completely different than the base class member. Hiding : - This is a C# Concept by which you can provide a new implementation for the base class member without overriding the member. You can hide a base class member in the derived class by using the keyword "new". The method signature,access level and return type of the hidden member has to be same as the base class member.Comparing the three :- 1) The access level , signature and the return type can only be changed when you are shadowing with VB.NET. Hiding and overriding demands the these parameters as same. 2) The difference lies when you call the derived class object with a base class variable.In class of overriding although you assign a derived class object to base class variable it will call the derived class function. In case of shadowing or hiding the base class function will be called. There are two main Differences between Shadowing and Overriding. 1) Overriding redefines only the implementation but shadowing redefines the whole Element. 2)In Overriding dervied Class can refer the Base class using ME Keyword but in shadowing we can access it using "MYBase".  Posted by: Praveen Sundar P.V       Contact Author © CoolInterview.com Today's Special: Get Free Magazine from SAP now! A D V E R T I S E M E N T

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Category	C# Interview Questions
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