C# Interview Questions and Answers | Important Csharp Interview Questions | C# Questions

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Following are the questions covered in this C# Q&A Series :-
Part 1-Questions on Stack, Heap, Boxing, Unboxing, Array, ArrayList, Generics, Threading.
00:00 Introduction.
02:34 Question 1 :- Explain difference between .NET and C# ?
06:44 Question 2 :- .NET Framework vs .NET Core vs .NET 5.0
15:08 Question 3 :- What is IL ( Intermediate Language) Code ?
15:08 Question 4 :- What is the use of JIT ( Just in time compiler) ?
17:03 Question 5 :- Is it possible to view IL code ?
18:14 Question 6 :- What is the benefit of compiling in to IL code ?
20:39 Question 7 :- Does .NET support multiple programming languages ?
22:52 Question 8 :- What is CLR ( Common Language Runtime) ?
24:10 Question 9 :- What is managed and unmanaged code ?
26:21 Question 10 :- Explain the importance of Garbage collector ?
28:11 Question 11 :- Can garbage collector claim unmanaged objects ?
28:33 Question 12 :- What is the importance of CTS ?
30:25 Question 13 :- Explain CLS ?
33:23 Question 14 :- Difference between Stack vs Heap ?
35:27 Question 15 :- What are Value types & Reference types?
36:15 Question 16 :- Explain boxing and unboxing ?
37:01 Question 17 :- What is consequence of boxing and unboxing ?
37:32 Question 18 :- Explain casting,implicit casting and explicit casting ?
39:37 Question 19 :- What can happen during explicit casting ?
40:48 Question 20 :- Differentiate between Array and ArrayList ?
43:12 Question 21 :- Whose performance is better array or arraylist ?
44:22 Question 22 :- What are generic collections ?
46:20 Question 23 :- What are threads (Multithreading)?
47:32 Question 24 :- How are threads different from TPL ?
52:47 Question 25 :- How do we handle exceptions in C#(try/catch)?
54:43 Question 26 :- What is the need of finally?
55:49 Question 27 :- Why do we need the out keyword ?
58:12 Question 28 :- What is the need of Delegates ?
58:45 Question 29 :- What are events ?
59:35 Question 30 :- Whats the difference between Abstract class and interface ?
Part 2 - Questions on Delegates, Event & Delegates vs Events.
Part 3 - Questions OOP, Abstraction, Encapsulation, Inheritance, Virtual, Overriding and overloading.
Part 4 - Questions Polymorphism, Static vs Dynamic polymorphism and operator overloading.
Part 5 - Tricky Questions around Abstract classes and Interfaces.
Part 6 - Answering the most asked Question "Abstract classes vs Interface".
Part 7 - Questions around constructors & in parent child which constructor fires first.
Part 8 - Questions around Shadowing, Sealed, Nested classes and partial classes.
Part 9 - Questions Around SOLID principles , Dependency injection (DI) and IOC
Part 10 - Explain & Differentiate Composition, Aggregation and Association in C#.
Part 11 - Crack questions on Stack, Heap, Boxing, Unboxing, Value & reference types
Part 12 - What is Garbage collector, Managed vs UnManaged code, Memory Leaks.
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7 июн 2024

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@questpondvideos 2 года назад

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@aricwilliamsdeveloper Год назад

very skilled teacher. It's hard finding someone with all the material #1. Then #2 they can teach in a way that connects with the students current understanding level. #3 they do it in a time efficient manner!!! will check out his paid stuff!!!

@caseyspaulding 6 месяцев назад

Agree!

@tusharkantidas4622 3 года назад

Shiv sir is superb. He always knew what are the question/s can come in listeners mind while listening to a topic and surprisingly you found he clarifies all your doubts then and there. I have been following him since 2013 (my first job). He is great...

@Kobi170 2 года назад

I can't believe it was for free. Thanks so much for Your videos, all the content You make. Listening to You is quite enjoyable, topics are explained thoroughly, I have no doubts I'll stay here for a long time. Thank You!

@venkateshpillay3213 2 года назад

Thank you sir!! Great video 😊👍 One more point want to add on c# function in ref to out keyword : We can return multiple values in .net core c# function by including all return types under () bracket

@varshatavade9271 2 года назад

You explaied so well that I don't have to review it again to remember... Excellent👏

@Dave-nv5rv 2 года назад

Thanks for this great video. For the past week I've been watching this once a day. I had a c# interview yesterday and this video helped me get a good job. Thanks so much.

@maitreyeekar7509 2 года назад

Awesome Shiv Sir! I have been watching your videos for the past 5 years. They are great! Your explanation is just awesome!

@reeteshjain9925 2 года назад

@suyashyadav6531 2 года назад

This deserves lot of appreciation. Great content.

@abcdeereijgfhd3215 2 года назад

This guy is the god of lecturer. Thx very much!

@OldMan_Strength 2 года назад

Good stuff. He makes it such that his delivery and explanations are clear and engaging.

@prasadreddy1859 2 года назад

Great explanation. To the point. Thank you so much for making it so simple.

@danb5019 2 года назад

Great video! I noticed the image at 52:11 says the opposite of what you want, use Tasks on new projects, not the old thread approach.

@mrrickr121 3 года назад

You are like a superb compiler who can compile the knowledge into every type of learners brain.😎

@questpondvideos 3 года назад

Thanks do see our other interview questions and learning videos from www.questpond.com/

@yatiraj9821 2 года назад

Thank you so much sir. Your explanation is the best. I could understand everything you taught so well!

@shahbazahmadkhan6246 Год назад

Good explain Questions & Answer

@questpondvideos 3 года назад

C# Interview Questions and Answers. 0:00 Introduction 2:34 Question 1 :- Explain difference between .NET and C# ? 6:44 Question 2 :- .NET Framework vs .NET Core vs .NET 5.0 15:08 Question 3 :- What is IL ( Intermediate Language) Code ? 15:08 Question 4 :- What is the use of JIT ( Just in time compiler) ? 17:03 Question 5 :- Is it possible to view IL code ? 18:14 Question 6 :- What is the benefit of compiling in to IL code ? 20:39 Question 7 :- Does .NET support multiple programming languages ? 22:52 Question 8 :- What is CLR ( Common Language Runtime) ? 24:10 Question 9 :- What is managed and unmanaged code ? 26:21 Question 10 :- Explain the importance of Garbage collector ? 28:11 Question 11 :- Can garbage collector claim unmanaged objects ? 28:33 Question 12 :- What is the importance of CTS ? 30:25 Question 13 :- Explain CLS ? 33:23 Question 14 :- Difference between Stack vs Heap ? 35:27 Question 15 :- What are Value types & Reference types? 36:15 Question 16 :- Explain boxing and unboxing ? 37:01 Question 17 :- What is consequence of boxing and unboxing ? 37:32 Question 18 :- Explain casting,implicit casting and explicit casting ? 39:37 Question 19 :- What can happen during explicit casting ? 40:48 Question 20 :- Differentiate between Array and ArrayList ? 43:12 Question 21 :- Whose performance is better array or arraylist ? 44:22 Question 22 :- What are generic collections ? 46:20 Question 23 :- What are threads (Multithreading)? 47:32 Question 24 :- How are threads different from TPL ? 52:47 Question 25 :- How do we handle exceptions in C#(try/catch)? 54:43 Question 26 :- What is the need of finally? 55:49 Question 27 :- Why do we need the out keyword ? 58:12 Question 28 :- What is the need of Delegates ? 58:45 Question 29 :- What are events ? 59:35 Question 30 :- Whats the difference between Abstract class and interface ? Question 31 :- What is a Multicast delegates ? Question 32 :- What is a Event ? Question 33 :- How to create a event ? Question 34 :- Delegate vs Events. Question 37 :- What is a class and object ? Question 38 :- Abstraction vs Encapsulation? Question 39 :- Explain Inheritance ? Question 40 :- Explain virtual keyword ? Question 41 :- What is overriding ? Question 42 :- Explain overloading ? Question 43 :- Overloading vs Overriding ? Question 44 :- What is polymorphism ? Question 45 :- Can polymorphism work with out inheritance ? Question 46 :- Explain static vs dynamic polymorphism ? Question 47 :- Explain operator overloading ? Question 48 :- Why do we need Abstract classes ? Question 49 :- Are Abstract methods virtual ? Question 50 :- Can we create a instance of Abstract classes ? Question 51 :- Is it compulsory to implement Abstract methods ? Question 52 :- Why simple base class replace Abstract class ? Question 53 :- Explain interfaces and why do we need it ? Question 54 :- Can we write logic in interface ? Question 55 :- Can we define methods as private in interface ? Question 56 :- If i want to change interface what's the best practice ? Question 57 :- Explain Multiple inheritance in Interface ? Question 58 :- Explain Interface Segregation principle ? Question 59 :- Can we create instance of interface ? Question 60 :- Can we do Multiple inheritance with Abstract classes ? Question 61 :- Difference between Abstract and Interfaces? Question 62 :- Why do we need constructors ? Question 63 :- In parent child which constructor fires first ? Question 64 :- How are initializers executed ? Question 65 :- How are static constructors executed in Parent child ? Question 66 :- When does static constructor fires ?

@questpondvideos Год назад

@@naveenchebrolu4010 Hope you have received PDF copy.

@jayanthianu1565 8 месяцев назад

Superb video sir. You explained everything with examples. This helps to understand easily.

@nikolaybilov9539 Год назад

Thank you so much. Genuine it course absolutely for free and from my sofa. I couldn't believe in possibility of this maybe some years ago. It systemised my haotic and mostly practical knowledge in C sharp a lot. I haven't any plans for changing my job now, but I copied this link in our work chat. I hope our bosses will understand me in a right way 😊

@Mr__B. 2 дня назад

Golden video that saves so much time! Thank you!

@BGiraldox Год назад

Loved the way how you explain, really kudos to you because to be able to explain a topic easily is because you understand the topic completely, thanks a lot! 👏

@tusharrasal7059 2 года назад

your explanation is excellent and easy 😊 thank you so much for this video

@10rid Год назад

The interview questions are helpful as it explains the concepts so well using examples and to the point.

@prashantpatil9906 3 года назад

Shiv sir, you are awesome.. Your explanation is too good..

@deepakgupta5733 3 года назад

Made my day sir🙏😊 to the point one-liners, that's what I was looking for. Many many thanks 👍💖

@KuntalPatel152 3 года назад

Awesome examination sir ,thank you so much for great video

@lifetechnol Месяц назад

the best teacher ever i have seen.

@alijohn198 2 года назад

Sir, you are great.... excellent video you've made

@MissChandrima Год назад

Thank you so much sir for such detailed and simple explanations! Really hard to find such content that too open for all. Please keep up the good work.🙏🏻

@marcuspowers9455 8 месяцев назад

Thank you for discussing the important points for interviewing at the end, very important to remember

@krushnadhavan850 2 года назад

Really Good Content.. Thank for the sharing with us

@Jdm4292 2 года назад

Exemplary video! including code snippets and demonstrations is very helpful!

@paulofernandoee 2 года назад

Outstanding content, congratulations for the work.

@vimalpanchal892 2 года назад

Great Video Sir, this is very helpful in refreshing all C# concepts real quick... Thank you so much, God bless you. Video link shared on my twitter handle and email sent to questpond :)

@vijaykambar2290 2 года назад

Thank u sir, what a great explanation with examples 👍

@abdessamadjadid5347 2 года назад

priceless video, thank you very much

@bjstutorials308 Год назад

Excellent Sir..Kudos

@karimmohamed8001 2 года назад

You are an excellent teacher!!! Thank you so much for everything!

@faeez4722 3 года назад

One of best Teacher

@narayanjha4355 2 года назад

Great help for me Man, Thank you so much, God bless you, You are doing really good job by helping so many students and developers

@phanirao2008 2 года назад

Really simple same time so effective covered

@mrrickr121 3 года назад

Superb quality of explanation...❤️

@questpondvideos 3 года назад

Thanks do visit to Learn .net course www.questpond.com/netc-fundamentals-net-collections-generics/cid22

@mrlimbu 3 года назад

Outstanding explanation! Thank you very much.

@questpondvideos 3 года назад

Thanks. Do visit www.questpond.com

@jacsonbates0608 2 года назад

Great video. Very well explained. Just a minor comment , I think it's "beat around the bush".

@gauravdeore1890 2 года назад

Thank you so much sir !!! Such a valuable knowledge

@NithyaShivaa 3 года назад

Wow Great Explanation Sir🙏🙏 Thank you so much 😌

@questpondvideos 3 года назад

Thanks and do visit www.questpond.com

@ARM_LuckyNo23 8 месяцев назад

good for refreshing csharp as a whole...nice

@narasimhareddy9148 2 года назад

Thanks a lot, Your videos verry useful me crack the Interview Thanks again

@aaronzheng519 3 года назад

Thank you for this video!!!!!! You explain really well with examples. very helpful

@questpondvideos 3 года назад

Thanks. Do visit for whole course www.questpond.com/ordernow.php?forvideos=8months

@GreystripeWarrior 2 года назад

Great video! I learned a lot, thank you!

@smithavelur867 Год назад

Sir, I am rejoining as a developer after a gap of 10 years.. your video has boosted my confidence multi fold. Thanks a ton ..

@kumarayush9950 8 месяцев назад

Hi Bro, I have 5 years of industry experience as a functional resource, I want to pursue my future career as a dotnet developer.. can you suggest some insights on from how/where should I start.. would be very helpful. Thanks for your help!

@Uzair_Anwar2299 2 года назад

Amazing content

@user-hz4vv3so4p 8 месяцев назад

good informative video...

@hemanthgunturu1884 2 года назад

Impressive tips

@maheshbhatchandavar 2 года назад

Perfect video Shiv🙏...Thank you. Where is the second part?

@vladimirbozhek6830 2 года назад

It's perfect. Thank you very much)

@MAHALAKSHMI-zu5wz 2 года назад

Great work sir

@AdriansArt Месяц назад

Very helpful, thank you!

@mursinabegum9358 2 года назад

Best explanation 👍🏻

@rojishvarughese9951 2 года назад

Great video

@sadhya 2 года назад

Great job 👏

@missedputts 2 года назад

Awesome vid! Btw... Parallely isnt a word... I think 'concurrently' is a better choice when talking about threading.

@Samuel-lm1wb 13 часов назад

Amazing video!

@simnac.p7293 2 месяца назад

Thank you for explaining well 👏

@suryapandey5378 3 года назад

I understood very well to u👍 Thank u Im preparing for fresgers interview for c#,sql,jquery.

@questpondvideos 3 года назад

Thanks and do visit www.questpond.com/netc-fundamentals-net-collections-generics/cid22

@chandankumardas7434 2 года назад

best explain..thank you

@intcoder Год назад

Great video! Thanks.

@sabirinfotech7797 3 года назад

Wow I enjoyed the way you explained shiv pls upload part2 soon thanks.

@questpondvideos 3 года назад

Thank You, do visit www.questpond.com

@gabrielvelazquezrios7324 9 месяцев назад

Thank you, this is really nice!

@mohanaPriya-wr1lf 2 года назад

Thank you for the great video 👌

@rishikatiwari9895 3 года назад

An excellent explanation. Thank you!

@questpondvideos 3 года назад

Do visit www.questpond.com/netc-fundamentals-net-collections-generics/cid22

@avinash.devkate8441 2 года назад

Veri nice, time saving

@Its_Hack Год назад

Thank you it was great memory refresh

@runawayvon01 5 месяцев назад

This appears as a question from the technical round. Thank you so much for this because I got the job offer.

@questpondvideos 5 месяцев назад

Congratulations on your job offer.

@zafar2073 20 дней назад

This video is priceless!

@komando005 5 месяцев назад

Thanks for this great video boss ❤

@ruchiecohen9037 2 года назад

This was so so helpful thankyou!!!!

@sudhid8765 3 года назад

Thank you so much sir. I loved the way u pushing the the topics into mind. Pls upload part-2 sir

@questpondvideos 3 года назад

Thanks. Do visit for the complete course www.questpond.com/c-step-by-step-with-interview-questions---answers-series/cid62

@manishshrestha4263 2 года назад

Great Explanation.

@shabiyabanu7990 3 года назад

Really great

@theav.1313 Год назад

Thank you soooo much for this!

@guttamanjunath1925 2 года назад

Thank you🙏

@sakithsam5940 Год назад

Awesome sir..

@islamahmedmohamed5147 2 года назад

thank you so much, what a greet job

@nandhakumar9139 2 года назад

great explanation thanks

@umeshmehta9047 3 года назад

Thank you very much sir for your deep explanation. If there would be a button more than like button in you tube then I will definitely go for that.

@questpondvideos 3 года назад

Thanks and do visit www.questpond.com/netc-fundamentals-net-collections-generics/cid22

@rajanipokuri1644 5 месяцев назад

Excellent

@simonaiacoban7190 Год назад

This video is a treasure

@sujalhshah 3 года назад

Looking forward to second part

@questpondvideos 3 года назад

Next part of the series will be released soon, do visit www.questpond.com

@user-of6jq8fg5g 10 месяцев назад

Superb

@theengineersdesk7930 2 года назад

Well explained

@sergeymigel4680 3 года назад

Excellent! Thank you!

@questpondvideos 3 года назад

Thanks and do visit www.questpond.com/netc-fundamentals-net-collections-generics/cid22

@narendramylam4739 3 года назад

One correction: Code that executes under the supervision of CLR is Managed Code and Code that executes under the supervision of Operating system (ex: COM components, file managment etc) is UnManaged Code.