Purpose of Interface ?

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Hello Everyone,

I am really confused about the purpose of interface.
Please consider the example:
i am creating an "IItem" interface and alloting two properties
"ItemName" and "ItemCode". any class that implements the "IItem" interface will the inherit these properties.
So my question is i can write these properties in the class without inheriting the "IItem" interface. so, why do i need them ?

thank you.

Posted 22-Oct-10 20:07pm

Anoop Ananthan

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3 solutions

Solution 3

Yeah, some beginner people still have doubt with interface. Go through this cute link it will help you.

What's the Deal with Interfaces?[^]

Posted 22-Oct-10 21:30pm

thatraja

Updated 22-Oct-10 23:29pm

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Anoop Ananthan 23-Oct-10 8:54am

it was very good, thank you

Solution 1

Look First .
In Interface all the function shud be abstract.

And the defination of the that function is defined in other class.
Let me know how much u did and what do u want.

Posted 22-Oct-10 20:13pm

Mohd Wasif

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Hiren solanki · Accepted Answer · 2010-10-22T20:18:00

Just expand the same scenario, If you want the same properties inside every class that inherited from Interface.

Interface force(Must) to implement the functionality.

for example. You are creating 100's of classes but the common functionality in every class you want is .ToString() method.

You are not going to develop all the classes, So this is an Technical non-voice Announcement for all the developer by inheriting from interface is to Must implement .ToString() Method.

Please vote and Accept Answer if it Helped.