Interview Questions and Answers

Mesmerize yourself in this carefully crafted and comprehensive compilation of interview questions, specifically designed to explore deep into the scope of prominent Microsoft technologies. This carefully tailored collection primarily centers around key areas such as C#, object-oriented programming (OOPs), the .NET environment, the .NET Framework, VB.NET, ASP.NET, and ADO.NET. By exploring this extensive resource, you will be exposed to an array of thought-provoking inquiries, thoughtfully selected to assess your knowledge and expertise in these fundamental Microsoft technologies.

Object-oriented programming (OOPs)

Within these pages, you will encounter a vast array of questions, carefully curated to scrutinize your understanding of C#—a powerful and versatile programming language employed extensively in Microsoft technologies. The inquiries pertaining to object-oriented programming (OOPs) aim to gauge your proficiency in utilizing this widely adopted paradigm for software development, emphasizing encapsulation, inheritance, and polymorphism.

Moreover, this compilation explore into the intricacies of the .NET environment, a fundamental framework providing a rich set of tools and libraries for building robust applications. The carefully crafted questions related to the .NET Framework will probe your comprehension of its architecture, key components, and its seamless integration with various programming languages.

  1. C# Interview Questions

  2. Object Oriented Programming Interview Questions

  3. .Net Framework Interview Questions

  4. Ado.Net Interview Questions

  5. Asp.Net Interview Questions

  6. Vb.Net Interview Questions

  7. C# Frequently Asked Questions

This thoughtfully curated selection of interview questions serves the purpose of providing you with an extensive comprehension of these technologies and their associated concepts. Whether you are a seasoned professional seeking to refine your knowledge or an enthusiastic beginner eager to explore the realm of Microsoft technologies, these questions will serve as a valuable resource, guiding you through crucial topics and ensuring you are well-equipped for your upcoming interview. Join us as we explore deep into the intricacies of C#, OOPs, the .NET environment, the .NET Framework, VB.NET, ASP.NET, ADO.NET, and an array of other pertinent subjects.


  C# Interview Questions
  1. C# Interview Questions (part-1)
  2. C# Interview Questions (part-2)
  3. C# Interview Questions (part-3)
  1. Difference between a Debug and Release build
  2. Difference between normal DLL and .Net DLL
  3. What is an Interface in C#
  4. Difference between Abstract Class and Interface in C#
  5. Difference between a thread and a process
  6. Delegates in C# with Examples
  7. Differences between a control and a component
  8. Differences between Stack and Heap
  9. What is .Net Reflection
  10. Globalization and Localization | C#
  11. What is .Net serialization
  12. Difference between web service and .net remoting
  13. Difference between managed and unmanaged code
  14. Difference between Shallow copy and Deep copy
  15. Use of System.Environment Class
  16. What is the difference between private and shared assembly?
  17. Does the .NET have in-built support for serialization?
  18. How to properly stop the Thread in C#?
  19. Why are there five tracing levels in System.Diagnostics.TraceSwitcher?
  20. Why is XmlSerializer so slow?
  21. How many types of Jit Compilers?

  ADO.Net - Interview Questions
  1. ADO.Net Interview Questions (Part-1)
  2. What are the advantage of ADO.Net
  3. Differences between classic ADO and ADO.NET
  1. What are managed providers
  2. Difference between Dataset and DataReader
  3. How to ADO.Net Connection Pooling
  4. How to Transaction in ADO.NET
  5. What is ADO.Net Locking
  6. Difference between SqlCommand and SqlCommandBuilder
  7. Difference between Typed DataSets and UnTyped DataSets

  .Net Framework - Interview Questions
  1. Difference between NameSpace and Assembly
  2. Execution process for managed code
  3. What is an Asssembly Qualified Name
  1. How to Assembly versioning
  2. Add and remove an assembly from GAC
  3. What is Native Image Generator (Ngen.exe)?
  4. How to force Garbage Collection
  5. Difference between CType and DirectCast
  6. Obsolete or Deprecated in NET Framework
  7. What is lazy initialization
  8. Difference between Clone and Copy
  9. Difference between Finalize() and Dispose()
  10. Difference between static and constant

  .Net General - Interview Questions
  1. Difference between a Value Type and a Reference Type
  2. System level Exceptions Vs Application level Exceptions
  3. Difference between sub-procedure and function
  1. What does the term immutable mean
  2. What does the keyword static mean | C#
  3. this.close() Vs Application.Exit()
  4. Difference between a.Equals(b) and a == b
  5. Difference between Hashtable and Dictionary
  6. Difference between Exception and Error
  7. C# Dictionary Versus List Lookup Time
  8. Difference between the Class and Interface in C#
  9. Why does C# doesn't support Multiple inheritance
  10. How to get the URL of the current page in C# - Asp.Net?

  ASP.NET Core MVC Interview Questions
  1. Asp.Net Interview Questions (Part-1)
  2. Asp.Net Interview Questions (Part-2)
  3. Advantages of ASP.NET Web Development
  1. What is IIS - Internet Information Server
  2. What is Virtual Directory
  3. What is HttpHandler
  4. Page Directives in Asp.Net
  5. What is a postback
  6. What is IsPostBack
  7. What is global.asax
  8. Difference between Machine.config and web.config
  9. Difference between HTML control and Web Server control
  10. What is Query String
  11. Difference between Authentication and Authorization
  12. How to secure Connection Strings
  13. What is ASP.Net tracing
  14. Passing values between Asp.Net pages
  15. Differentiate between client side validation and server side validation
  16. How to Get host domain from URL
  17. Adding a Favicon To Your Website
  18. Asp.Net Textbox value in Javascript
  19. AutoEventWireup attribute in ASP.NET
  20. Can I use multiple programming languages in a ASP.net Web Application?
  21. Difference: Response.Write and Response.Output.Write
  22. How many web.config files can I have in an application?
  23. What is Protected Configuration in asp.net?
  24. Static variablesin .Net , what is their life span?
  25. Difference between ASP Session and ASP.NET Session?
  26. What does mean Stateless in Asp.Net?
  27. What is the Difference between session and caching?
  28. What are different types of caching using cache object of ASP.NET?
  29. Which method is used to remove the cache object?
  30. How many types of Cookies are available in ASP.NET?
  31. What is Page Life Cycle in ASP.net?
  32. What is the code behind and Inline Code in Asp.Net?
  33. What is master page in ASP.NET?
  34. Can you change a Master Page dynamically at runtime?
  35. What is cross-page posting in ASP.NET?
  36. How to redirect a page in asp.net without performing a round trip ?
  37. How to register custom server control on ASP.NET page?
  38. How do you validate Input data in Asp.Net?
  39. What's the difference between ViewData and ViewBag?
  40. Difference between Response.Redirect and Server.Transfer
  41. What is the function of the CustomValidator control?
  42. Define RequiredFieldValidator?
  43. Difference between custom control and user control
  44. Difference between Label and Literal control in ASP.Net
  45. What are the major events in Global.Asax file?
  46. What is Event Bubbling in asp.net ?
  47. What is Delay signing?
  48. What is the difference between in-proc and out-of-proc?
  49. What is the difference between POST and GET?
  50. A potentially dangerous Request.Form value was detected from the client

  Object Oriented Programming Interview Questions
  1. What is object-oriented programming?
  2. What is a Class?
  3. What is an Object?
  1. Constructors and Destructors
  2. What Is Inheritance ?
  3. What are the different types of inheritance ?
  4. What are Access Modifiers ?
  5. Why Classes cannot be declared as Protected?
  6. Can we declare private class in namespace
  7. Difference between Classes and Structures
  8. Can we use pointers in C# ?
  9. Why abstract class can't create instance
  10. Can you prevent your class from being inherited
  11. Difference between method Overloading and Overriding
  12. Difference between Early Binding and Late binding
  13. What is nested class
  14. What is partial class ?
  15. What is Virtual Method
  16. Difference between class and object
  17. What is Data Encapsulation?
  18. Object Based Language and OOPs
  19. SOLID Principles in C#
  20. Solid Principles | Advantages and Disadvantages

  .Net - Frequently Asked Questions
  1. Can you store multiple data types in an Array
  2. What is meant by Hash Code
  3. Is string a value type or a reference type
  1. Difference between parse and tryparse
  2. What are the type of Errors
  3. What is anonymous type ?
  4. Difference between Singleton and a Static Class
  5. Difference between Properties and Fields
  6. What does the [Flags] Enum Attribute Mean?

  .Net - Interview Questions quick answers
  1. Does C# support multiple Inheritance ?
  2. What is Process ID ?
  3. How do I make a DLL in C# ?
  1. How many ways you can pass values to Windows Services ?
  2. Can we use "continue" statement in finally block ?
  3. What is nullable type in c# ?
  4. Difference between the Debug class and Trace class ?
  5. What is lock statement in C#
  6. What are dynamic type variables in C#
  7. What is the difference between is and as operator in C#?
  8. What are circular references in C#?
  9. What are the differences between events and delegates in C#
  10. Explain the types of unit test cases in C#?
  11. How many types of comments are there in C#?
  12. What are the various ways to pass parameters to a method in C#?
  13. What are the different ways to deploy a assembly in net?
  14. What does assert() method do in c#
  15. What is literals in C# - Constants and Literals
  16. What is the use of goto statement in C#
  17. How can JIT code be faster than AOT compiled code
  18. Why events have no return types in .NET
  19. What's the difference between a static method and a non-static method in C#
  20. What's a weak reference c#?
  21. What is C# equivalent of the vb.net isNothing function
  22. What are indexers in C#
  23. What are generics in c#

  C# Programming Interview Questions
  1. What are the Default Access Modifiers in C#?
  2. What is a sealed class in C#?
  3. What is operator overloading in c#?
  1. Difference Between Finalize and Dispose Method in C#?
  2. What is an Object Pool in .Net?
  3. What is Anonymous type in C#?
  4. Dynamic type variables Vs Object type variables in C#?
  5. What is the difference between Array and ArrayList in C#?
  6. Difference Between Clone() and CopyTo() Array
  7. Difference between throw and throw new Exception() in C# ?
  8. What is the use of finally block in C#?

  VB.Net - Interview Questions
  1. VB.Net Interview Questions (Part-1)
  2. What is Visual Basic .NET (VB.NET)?
  3. What are the advantages of VB.NET?
  1. What is the difference between VB and VB.Net?
  2. What is the difference between ByVal and ByRef?
  3. What is the difference between Dock and Anchor?