Static class vs Singleton in C# | C# Interview Questions & Answers | Static & Singleton in CSharp

Static class vs Singleton C#

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[gururajaraghavendrarao]

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[sahiljain]

By far the best video on this subject. Nobody explained it this way.

[mominwasae]

To be fair most clear explanation...thanks shiv sir

[minutecode]

Thanks sir for such a detailed and informative session

[Gauravkumar-jmve]

Excellent explanation Sir thank u so much, pls keep posting more

[vineetchaudhary]

Its very nice video to clear the basic funda.

[malayaliop]

Sir, since class is having private constructor, that class is restricting instance creation and inheritance right.Then what is the purpose of sealed class

[JarvisAlgo]

Can we have one more video on TPL and TAL , means task vs async await… where when to use it

[aagebadho]

@Questpond
If you are changing the data type of GetCountries from List to IEnumberable and saying that now we don't get methods like Add() which can manipulate the data. I assume that assumption is wrong, why because anytime we can type cast the IEnumberable type to List<> type again. And once that is done then we again have access to GetCountries() which can manipulate the data. Please help me explain this.

[eladyehuda]

Regarding the safe iterator, what will happen even though you defined a property as Ienumable, if you cast the property to a list? You will then perform Add, in the original property the element that was added will appear like that? But like that, do you have an argument that explains that this is also avoided?

[bishwaitsahoo]

Its dependes on the what type ofrequirement we have, if we are going to use Singleton, then why we are going to inherit it or any object oriented features. for an instance : the Singleton can be used if any master data(readonly) we need to used through out the application

[vineetchaudhary]

I want to ask one Question: If we are going to use singleton design pattern in application then all request goes to, into a queue then performance will be down it means bottleneck will come. then why Singleton?

[hearyourmood]

Why can't i encapsulate countries list in static class? I could make list private and create a public method for getting that list

[nilabhrabhattacharjee]

Sealed is used for Singleton to restrict the use of new keyword and object creation in a nested derived class. If some other class is getting inherited inside the singleton class then private constructor becomes accessible inside the nested derived class. Again you can write new keyword and that will violate the entire objective of creating single instance.

[chetslove]

Thanks a lot...It was great session...

[pulapakadurgaprasad]

After two years today also gurupournami... Today I watched

[sayanchatterjee]

Hi, Why you did not create a private constructor for your "Singleton" class?

[hlch]

Singleton class is not a static class like your code, and your demonstration is only to show the difference between Singleton instance and naked static instance, not the difference between singleton class and static class

[BimalDaslol]

Why your singleton class has static keyword? As far I know Singleton class can not have static keyword.

[td]

Wikipedia is not credible source for such things.