About AspDotnetHelp.com
Practical C# and ASP.NET tutorials from a 13-time Microsoft MVP
AspDotnetHelp.com is a free tutorial website for C#.NET, ASP.NET and .NET developers. It was founded by Bijay Kumar, a Microsoft .NET developer with more than 18 years of hands-on experience, to share clear, tested code examples that solve real programming problems.
Meet Bijay Kumar How we write our tutorials
- 190+Free tutorials
- 13×Microsoft MVP founder
- 18+ yearsHands-on .NET experience
Page last updated: September 2026
Who writes AspDotnetHelp.com
Meet Bijay Kumar, 13-Time Microsoft MVP
Bijay Kumar is a Microsoft .NET developer with more than 18 years of hands-on experience building ASP.NET and C#.NET web and desktop applications for clients across the United States. Microsoft has recognized his technical expertise and community contributions with the Most Valuable Professional (MVP) award 13 times.
He has worked with HP, TCS and KPIT, and today he leads TSInfo Technologies, a Microsoft-focused development company. Over his career he has worked across .NET Framework, ASP.NET MVC, Web API and Windows Forms projects.
He founded AspDotnetHelp.com to publish the kind of tutorial he wanted as a developer: one problem, the complete working code, the output it produces, and a plain-English explanation of why it works. Many tutorials start from real coding questions that come up on client projects and in technical interviews.
What you’ll learn
C# and .NET Topics We Cover
From your first C# variable to delegates, collections, Windows Forms and interview prep. Pick a topic to start with its main tutorial.
What Is C#.NET? The Language and Its Ecosystem
Where C# fits in .NET, what you can build with it, and the building blocks every program uses.
For Loop in C# with Practical Examples
Repeat code, make decisions and handle errors so your programs behave the way you expect.
OOPS Concepts in C# with Real Examples
Classes, objects and the four pillars of object-oriented programming, explained with real code.
Delegates in C# with Real-Time Example
Delegates, events and other language features you will meet in real projects and interviews.
C# Array with Examples
Store and work with groups of values using arrays, lists, dictionaries and hashtables.
String vs StringBuilder in C#
Build, search, trim and reverse text the right way, with an example for every common task.
Folder Browser Dialog in C#
Create, browse and clean up files and folders, and build small Windows Forms desktop apps.
Write a C# Program to Print Fibonacci Series
Sharpen your logic with classic beginner programs, each with full code and sample output.
Top 51 C# Interview Questions for Freshers
Get ready for C# and .NET Core interviews with questions grouped by experience level.
Editorial standards
How We Create Our .NET Tutorials
Code examples are only useful if they compile and do what the tutorial says. Here’s how every guide on AspDotnetHelp.com is made.
Solve a real problem
Topics come from coding tasks on real projects, questions developers search for and common interview questions.
Write and run the code
Every example is written and run in Visual Studio before it is published, and the tutorial shows the output you should see.
Check the official docs
Language features and APIs are checked against the Microsoft .NET documentation, and we link to it where it helps.
Keep it current
We review and update tutorials as C# and .NET evolve, and fix mistakes as soon as readers point them out.
Our readers
Who AspDotnetHelp.com Is For
- BeginnersLearning C# for the first time, one concept and example at a time.
- StudentsPractice programs with full code and output for assignments and exams.
- Working developersQuick, copy-ready answers for strings, collections, files and more.
- Job seekersC# and .NET Core interview questions grouped by experience level.
Trust & transparency
Independence, Advertising and Corrections
Independent site
AspDotnetHelp.com is independent and is not affiliated with, sponsored by or endorsed by Microsoft. Microsoft, .NET, C#, ASP.NET and Visual Studio are trademarks of their owners.
Free, supported by ads
Every tutorial is free to read. The site is supported by display advertising, and advertisers have no say in what we write. See our privacy policy for how ads and cookies are used.
Corrections
If a code example doesn’t work or you spot a mistake, please contact us. We check the report, test the code again and update the tutorial.
Get in touch
Have a .NET Question or Tutorial Request?
Ask about an error, suggest a topic you’d like covered, or ask about working with TSInfo Technologies on a .NET project.