C# Interview Questions & Answers

Showing 10 of 62 questions | Page 5

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

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41. What

A sorted HashTable.

42. What

HashTable.

43. What

StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it

44. What

A catch block that catches the exception of type System.Exception. You can also omit the parameter data type in this case and just write catch {}.

45. What

Microsoft.Access.

46. What

Single-line, multi-line and XML documentation comments.

47. What

In the interface all methods must be abstract; in the abstract class some methods can be concrete. In the interface no accessibility modifiers are allowed, which is ok in abstract classes.

48. What

System.String is immutable; System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed.

49. What

Documentation looks the same. Use Debug class for debug builds, use Trace class for both debug and release builds.

50. What

The first one performs a deep copy of the array, the second one is shallow.