Prepare the most anticipated C# interview questions and answers for experienced professionals to increase your chances of landing a job at the top companies that use C# in their tech stacks, such as Accenture, Google, Delivery Hero, Wipro, Infosys, HCL, TCs, Microsoft, Stack Overflow, Intuit, and Trustpilot.
C# is a programming language ideal for general purposes as it encompasses several disciplines such as object-oriented programming, component-oriented programming, static and strong typing. C# is popularly used in the ASP.NET framework as it is ideal for creating web applications, websites, and games. Continue reading to discover the most frequently asked C# interview questions and answers for experienced professionals.
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The key concepts in the following list of C# interview questions and answers for experienced professionals are explained simply and easily to help you ace your next job interview.
You can carry out exception handling using the following four keywords in C#:
You can implement encapsulation by using access specifiers that define the scope and visibility of a class member. Some access specifiers are as follows:
The following table enumerates the key differences between overloading and overriding.
Shadowing or method hiding in C# is a VB.Net concept hiding the implementation of the base class method. You can achieve method shadowing using the 'new' keyword. If a method does not override the derived method, it hides it.
Generics are classes that allow you to define classes and methods with a placeholder. The purpose of generics is to make reusable code classes. These classes decrease code redundancy and increase performance and type safety.
Generics promotes the usage of parameterized types. You can also create collection classes using generic. System.Collections.The generic namespace is used instead of classes to create a generic collection.
Take a look at the top .NET Interview Questions and Answers that you need to prepare.
You can de-couple tightly linked classes using the dependency injection. Thus, it reduces the direct dependency of classes upon each other. You can achieve dependency injection via the following:
This is one of the most commonly asked C# interview questions and answers for experienced professionals. Polymorphism is one of the three main pillars of object-oriented programming after encapsulation and inheritance.
The term polymorphism means "many shapes." It occurs when there are many classes related to each other by inheritance.
For instance, at runtime, derived class objects may be treated as base class objects in places like collections/ method parameters/ arrays. In such polymorphism, declared and runtime types of objects are different. Thus, polymorphism allows a class to have multiple implementations with the same name.
No, you cannot serialize a hashtable because the .NET Framework doesn't allow the serialization of an object that implements the IDictionary interface.
A compiled library (DLL) containing localizable resources specific to a given culture like strings and bitmaps is referred to as a Satellite Assembly. You can use satellite assemblies while creating a multilingual UI application.
Interface inheritance is when a class inherits only the signatures of the functions from another class. It is also called type inheritance/ subtyping. It allows code reuse and polymorphism. The main advantage of interface inheritance is that it reduces coupling and implementation dependencies.
The major advantages of using partial classes are as follows:
String Interpolation in C# allows to create formatted strings with readable and convenient syntax. You can create an interpolation string containing interpolation expressions using the $ special character. On resolving, the interpolation string replaces the interpolation expression with the string representation of the interpolation item.
While covariance allows a method to have a return type, a subtype of the one defined in the delegate, contravariance allows a method to have a parameter type, i.e., a base type of the one defined in the delegate type.
Classes and Structs have the following in common:
The key differences between structs and classes are as follows:
Practice the following C# interview questions for experienced professionals.
You should be well-versed in data structures and algorithms to ace the C# coding problems in technical interview rounds.
If you are applying for senior C# developer roles, you should practice the following advanced C# interview questions to outperform the competition.
This completes our list of the most anticipated C# interview questions and answers for experienced professionals. In addition to these questions, you must practice mock interviews to nail the most challenging technical interviews.
Q1. What topics should I prepare for C# interview questions and answers for experienced professionals?
You should thoroughly practice control statements, arrays, functions, object classes, properties, inheritance, abstraction, polymorphism, CLR, CLS, CTS, and strings exception handling to ace C# interview questions and answers for experienced professionals.
Q2. How should I prepare for C# interview questions and answers for experienced professionals?
You must get well-versed in basic and advanced concepts of C#. Practice the most anticipated interview questions, and practice mock interviews. You must practice multiple coding problems to improve your speed and accuracy.
Q3. What are the main differences between C and C#?
The key difference between C and C# is that the C language can be executed cross-platform, whereas the .NET framework is required to execute the C# language. In the C language, garbage collection is not available, but C# features garbage collection managed by Common Language Runtime (CLR).
Q4. Which companies use C# interview questions and answers for experienced professionals?
Several top companies use C# interview questions and answers for experienced professionals, including Google, Wipro, Infosys, Accenture, JP Morgan, HCL, TCS, and Google.
Q5. What is the average salary of a C# developer in the US?
The salaries of C# developers range from $60,000 to $160,000 in the United States, and the average salary is $80,000 (Source: comparably.com).
Preparing for technical interviews, especially the challenging ones, steers you on the path to becoming a better software professional with improved coding, problem-solving, and behavioral skills. You become more confident at taking and cracking interviews.
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