C# Interview Questions and Answers
C#, sometimes also called as C sharp, is a component-oriented, general-purpose computer programming language that encompasses strong typing, declarative, imperative, and object-oriented disciplines. This information has been asked quite a few times recently in C# interview questions. It is a multi-paradigm language that was initially designed for Common Language Infrastructure (CLI).
C# allows the developers to build reusable components for a huge variety of applications. C# is an evolution or extension of C and C++ languages. However, it has taken much of its features from other programming languages as well, including Delphi and Java. When you analyze the basic syntax of C# and Java and C++, it will look very similar, which is intentional and not a coincidence.
Most Frequently Asked C# Interview Questions
C sharp is a component-oriented, general-purpose computer programming language that encompasses strong typing, declarative, imperative, and object-oriented disciplines. It is a multi-paradigm language that was initially designed for Common Language Infrastructure (CLI)
Why It is used for?
You can write desktop applications, Console applications, ASP.NET applications, and scalable cloud apps. These are only a few of the uses of C#; a skilled developer can do a lot more than this.
It was developed by Microsoft around the year 2000.
| S.no | C# | .NET |
|---|---|---|
| 1. | Programming language | Framework on which the language is built |
| 2. | Runs on the .NET framework | Primarily runs on Windows |
| 3. | One of the many languages in the .NET Framework | Includes various languages under it |
The term "sharp" is inspired by music notation that indicates that the musical note should be higher in pitch. This has been applied to the language C++, where "++" indicates that its performance will ideally be improved or increased by 1. The sharp symbol resembles four "+" symbols (in a grid of two-by-two), that may imply to some that C# is an advanced or improved version of C++. We have the most extensive question bank to help you answer C# interview questions.
Winforms, or Windows Forms, are a graphical user interface or application programming interface (API) that are included in Microsoft's .NET Framework.
- Easy to understand
- Object and component-oriented
- Faster and safer
- Part of Microsoft's .NET framework
In C#, the different types of classes are Partial class, Sealed class, Abstract class, and Static class.
| S.no | Dynamic type variables | Object type variables |
|---|---|---|
| 1. | Introduced in C# 4.0 | Introduced in C# 1.0 |
| 2. | Handle-type checking at runtime | Handle type checking at compile time |
| 3. | Casting not required | Cast object variables to original types |
This information is usually asked in C# technical interview questions. In C#, there are mainly three kinds of comments - single line, multiple lines, and XML comments.
Advantages
- Easy to understand
- Object and component-oriented
- Faster and safer
C# has grown very rapidly and is used widely. It is mostly because of its versatile syntax and cross-platform support. Developers who are trained in Java, C+ or C++ will be easily and quickly able to work in C#. We have updated our C# interview questions for freshers. The lambda expressions, nullable value types, direct memory access, delegates, and enumerations are powerful features that simplify the language C++; and on top of it, these add-ons are not available in other languages, such as Java.
Latest Version
Read more about recent versions if you are preparing for C# interview questions. The latest version, C# 7.3, was released in 2018.
Development History
C# was developed by Microsoft around the year 2000 within the .NET initiative. Later, this language got approved by Ecma (ECMA-334) as a standard. Designed by Anders Hejlsberg, the current development of C# is being taken care of by Mads Torgersen.