Technical interview questions and answers help you perform well in any C# Interview because companies test your understanding of .NET concepts, OOPs, collections, delegates, LINQ, and error handling. C# is widely used in enterprise applications, making it a key skill for software development roles. Companies like TCS, Wipro, Infosys, Cognizant, and Capgemini frequently ask core C# questions to evaluate your coding skills and understanding of the .NET ecosystem. This guide includes commonly asked C# interview questions with detailed explanations to help freshers and job seekers strengthen their technical foundation. These questions will support your preparation for coding rounds, technical interviews, and project-related discussions.
C# developers can expand their Microsoft technology stack by learning .NET framework architecture and Windows programming techniques
Showing 10 of 62 questions
1. And if they have conflicting method names?
It
2. Are private class-level variables inherited?
Yes, but they are not accessible, so looking at it you can honestly say that they are not inherited. But they are.
3. C# provides a default constructor for me. I write a constructor that takes a string as a parameter, but want to keep the no parameter one. How many constructors should I write?
Two. Once you write at least one constructor, C# cancels the freebie constructor, and now you have to write one yourself, even if there
4. Can multiple catch blocks be executed?
No, once the proper catch code fires off, the control is transferred to the finally block (if there are any), and then whatever follows the finally block.
5. Can you allow class to be inherited, but prevent the method from being over-ridden?
Yes, just leave the class public and make the method sealed.
6. Can you change the value of a variable while debugging a C# application?
Yes, if you are debugging via Visual Studio.NET, just go to Immediate window.
7. Can you declare the override method static while the original method is non-static?
No, you can
8. Can you inherit multiple interfaces?
Yes
9. Can you override private virtual methods?
No, moreover, you cannot access private methods in inherited classes, have to be protected in the base class to allow any sort of access.
10. Can you prevent your class from being inherited and becoming a base class for some other classes?