Top # 10+ C# Language Interview Questions and Answers

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Hey there are you preparing for Job interview or something ? then you are at the right place. We, Hack For security have collected the frequently asked questions in C# Interview questions.

C Sharp is simple, Object orientated, modern and General-purpose programming language and today we will help you to crack any interview of the C# language.

C# Language Interview Questions and Answers


C# Language Interview Questions and Answers
C# Language Interview Questions and Answers

1.  What is object-oriented programming (OOP) Language?


Object-oriented programming (OOP) is a programming language model organized around objects rather than "actions" and data rather than logic. Historically, a program has been viewed as a logical procedure that takes input data, processes it, and produces output data.

2. What are the types of comment in C# with examples?

 
i.  Single line
ii. Multiple line (/* */)
iii. XML Comments (///).

3. Can multiple catch blocks be executed?


No, Multiple catch blocks can’t be executed. Once the proper catch code executed, the control is transferred to the finally block and then the code that follows the finally block gets executed.

4.Explain about C# Language.


C# is a OOPs language, .net framework use to compiled it, to generate machine code.

5. Top reason to use C# language?


It can be compiled on a variety of computer platforms.
It produces efficient programs.
Component oriented.
Part of .Net Framework.
Modern, general-purpose programming language
Object oriented.
Easy to learn.
Structured language.

6. feature of C# language?


Conditional Compilation
Simple Multithreading
LINQ and Lambda Expressions
Delegates and Events Management
Integration with Windows
Indexers
Boolean Conditions
Automatic Garbage Collection
Standard Library
Assembly Versioning
Properties and Events
Easy-to-use Generics

7. What is a Class and object?


a set or category of things having some property or attribute in common and differentiated from others by kind, type, or quality. and Objects are created from Classes, in C#, is an instance of a class that is created dynamically. Object is also a keyword that is an alias for the predefined type System.

8. Types of Constructors


Copy Constructor
Parameterized Constructor
Private Constructor
Basically constructors are 5 types those are
Default Constructor
Static Constructor

9.What is the difference between ref & out parameters?


An argument passed as ref must be initialized before passing to the method whereas out parameter needs not to be initialized before passing to a method.

10. What is an interface class?


Interface is an abstract class which has only public abstract methods and the methods only have the declaration and not the definition. These abstract methods must be implemented in the inherited classes.

11.What is method overloading?


Method overloading is creating multiple methods with the same name with unique signatures in the same class. When we compile, the compiler uses overload resolution to determine the specific method to be invoke.

If you have any questions then feel free to ask!

How to Install 2 Whatsapp on Same Android Device or Smartphone

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Now a days most people are using Android Smartphone which have dual SIM and in this android tutorial I am going to show you how you can easily use two Whatsapp account on the same android Smartphone or any other android device.

Sometimes we have to use dual SIM because few Telecom company have awesome internet packs and few have awesome call pack. So, this is the reason why most people are using dual SIM android Smartphone and the thing is that we are using Dual SIM android Smartphone and we want two Whatsapp account means we want to install two Whatsapp on same android Smartphone.

Install 2 Whatsapp on Same Android Device or Smartphone


How to Install 2 Whatsapp on Same Android Device or Smartphone

Just follow the simple steps to use Two Whatsapp account on the same android Smartphone.

How To Solve “Error 905 Play Store” In Google Play Store


1. First of all the things you need is two active SIM card and obviously android Smartphone.

2. Take a backup of your all the messages because in case something goes wrong you can easily recover your messages.  To take backup of your Whatsapp chats simply go to Settings –> Chat Settings and Tap on Back up Chats. Now your all the Chats are saved and safe!

3. Now download WhatsMap

4. Now install the WhatsMap and open it in your android Smartphone

5. Now enter your Old Whatsapp account number and then verify it with your mobile number.

6. You have your old Whatsapp account in the WhatsMap

7. Now Go to Settings –> Apps –> Select Whatsapp and clear its data.

8. Now open Real Whatsapp and then simply create a new Whatsapp account in it.  And now you are done with your new Whatsapp account.

Now you have Successfully installed two Whatsapp account in your android Smartphone and if you have any question about having two Whatsapp account in your android Smartphone then feel free to ask.

How to Solve “error 905 play store” In Google Play Store

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Hey in this tutorial you will learn how to easily solve “error 905 play store” error in android device. It doesn't matter whether you are using android Smartphone or android tablet or any other android device. you can solve this problem on any device you have.

Most of the time you get “error 905 play store” in Google Play store even though you have enough space on your android device.

How to Fix “error 905 play store” In Google Play Store


How to Solve “error 905 play store” In Google Play Store
How to Solve “error 905 play store” In Google Play Store

Its not really hard to fix android error 905. you can easily fix this error by just following this steps.

Open all the applications in your android device and then look for Settings.

Now Tap on the Apps in settings.

Select Google Play Store and then tap on uninstall updates.

Now, you have successfully deleted all the updates of Play Store but don’t you worry you can update It later too. But the main thing is that you can successfully solved this annoying problem. Now you can easily download and update applications and games in your android device.

The Best IOS Emulator for Windows PC 2015

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The Best IOS Emulator for Windows 2015 : Now a days every big companies like Flipkart, Paytm, Freecharge are based on the mobile application and the most famous ecommerce company “Flipkart” is going to shutdown their official website and they will just allow you to buy products online via their Flipkart App. So, after a year there will not be any flipkart website so download the Flipkart App Now.

The Best IOS Emulator for Windows 2015

The Best IOS Emulator for Windows 2015
The Best IOS Emulator for Windows 2015

So, Now a days most of the developers are concentrating on the android application development, IOP application development and windows application development! So, if you want to develop IOS application and if you don’t have MAC book pro then also you will be able to develop the IOS application and here is the Emulator of the IOS for the windows.

1. iPadian

iPadian is the best IOS emulator for the windows and it doesn't matter if you are using windows 7, windows 8, windows 8.1 or even windows 10, MAC or Linux  iPadian works great for all the operating system that's why its the best ios emulator for the windows. The only weak point about the iPadian is it takes bit long time for the installation. You can use app store to download and install amazing games from the app store and you can simply double click to open the installed apps or games!

2.  Air iPhone Emulator

Air iPhone Emulator is another great iPhone emulator for the windows. Its really good iPhone emulator which provides lots and lots of facilities say voice call facility And this is the perfect IOS emulator for windows to test your Application!

We have shared the awesome IOS emulator for the windows and if you have any question about the IOS emulator for the windows then feel free to ask! :)