Abstract Class vs Interface (Real Application Use) in C# .NET

Q. What is the difference between an Abstract class and an Interface (atleast 4)?
Q. When to use Interface and when Abstract class in real applications?

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My best wishes are with you.

[marquismccann]

This is the one abstract class video that actually makes sense to me thank you

[zeenatfirdoshquadri]

months of confusion minutes of solution... thanku
its very lucid

[voice-over]

Many years and 100's of videos trying to undertsand this. Thank you.

[divyapriya]

Abstract class :
It is declared as abstract keyword.
It has both abstract and not abstract method.
It has both declaration and definition.
Default scope of member is private.
Multiple inherence is not supported.
It can have constructor

Interface:
It is declared as interface keyword.
It has only abstract method.
It has only declaration.
Default scope of member is public
It supports Multiple inherence.
It does not have constructor.

[naveenbaghel]

I have no word for your knowledge, awesome happy rawat ji

[DrEgypt-hesw]

"Thank you for the video and all your hard work! I noticed at 6:01 you said, 'Normally we prefer Interfaces because it gives us the flexibility to modify the behavior at a later stage.' I think you might have meant to say abstract classes. Although interfaces can be changed later, there's a problem because every time you add a new method to the interface, all the classes that use this interface have to be updated to include this new method. That can cause a lot of extra work.

[mounikanimma]

Super anna... excellent keep going do all videos anna we will support you

[aritrachakraborty]

Abstract class can contain class fields but interface cannot contain class fields

[paulh]

thank you for excellent content - exactly what people needed here

[Anuj_sk]

It means abstract class acts as an Interface for the derived class when we go for inheritance and if we create an object of the derived class we must override the function of base class because the base class is abstract

[akshaydaundkar]

Excellent 👌

After watching lots of difference, now I get clear idea 💡 about it...

Thank you 👍

[kyyhtpv]

very nice explanation, Thanks to you !!

[kumaravelg]

Use of inheritance is reuse code but when we use interface for multiple inheritance we need to write method body in each derived class. Pls clarify my doubt

[nityanandbhangale]

Sir please video in hindi on why we need to create abstract class TCS interview question.

[superkfc]

Great video! Thank you for the splendid explanation!

[iliashterev]

Hello and Thank you for this tutorial.
I think methods in interface can not have accessors, like public, etc.

[shahrukhchaus]

Exactly what for I was looking 👍 thanks

[atulkrjha]

But in your example you use public access modifier in interfaces. I think we cannot use public access modifiers in interfaces.

[PraveenKumar-umtx]

Sir First point clear nhi huva.. Ki new feature m hum method body interface and abstract class m use kar sakte h.. Phir ye man ley ki new feature k ane pr first difference jo aap ne btya h vo exclude hai?

[shubhamshinde]

4 year full stack .net developer ko kitna package hona chahiye