Top 50 Interview Questions OOPS & C# in Hindi

1. Full .NET Interview Course (with PDF Book) C# / ASP.NET Core / MVC / API - Top 500 Interview Questions https://www.udemy.com/course/csharp-oops-mvc-asp-dotnet-core-webapi-sql-questions-mock-interviews/?referralCode=6922C9482CFE5A11B863 Don't worry if course not helping you, Udemy has 30 days Free Refund Policy. 2. Quick Revision Book (PDF format) Top 500 .NET Interview Questions - OOPS/ C#/ ASP.Net/ MVC/ SQL /.Net Core /Web API https://imojo.in/interviewhappy 50% Discount Applied on above link. Don't worry if book not helping you, I will return 100% of your money with in 7 days of purchase. Just mail me at - [email protected] My best wishes are with you. Timecodes 00:00-Introduction 02:56-Q1What is OOPs and What are the main concepts of OOPs? 04:47- Q2What are the advantages and limitations of OOPS? 09:07- Q3What are Classes and Objects? 14:16-Q4What is Inheritance? Why Inheritance is important? 17:55-Q5What are the different types of Inheritance? 20:09-Q6How to prevent a class from being Inherited? 22:00-Q7What is Abstraction? 25:49-Q8What is Encapsulation? 29:12-Q9What is Polymorphism and what are its types? 32:11-Q10What is Method Overloading? In how many ways a method can be overloaded? 34:37-Q11What is the difference between Overloading and Overriding? 38:48-Q12What is the difference between Method Overriding and Method Hiding? 41:04-Section 2 41:53-Q13What is the difference between an Abstract class and an Interface (atleast 4)? 47:58-Q14When to use Interface and when Abstract class? 53:00-Q15Why to even create Interfaces? 56:56-Q16Do Interface can have a Constructor? 57:58-Q17Can an Interface have private access specifier? 59:08-Q18Can you create an instance of an Abstract class or an Interface? 01:00:10-Section3 01:00:50-Q19What are Access Specifiers? What is the default access modifier in a class? 01:05:52-Q20What is Boxing and Unboxing? 01:09:13-Q21What is the difference between “String” and “StringBuilder”? When to use what? 01:13-32Q22What are the basic string operations in C#? 01:15:26-Q23What are Nullable types? 01:16:57 -Q24Explain Generics in C#? When and why to use them? 1:23:40-Section 4 1:24:21-Q25How to implement Exception Handling in C#? 1:27:31-Q26Can we execute multiple Catch blocks? 01:29:00-Q27What is a Finally block and give an example when to use it? 1:30:25-Q28Can we have only “Try” block without “Catch” block? 1:31:50-Q29What is the difference between “throw ex” and “throw”? 1:34:58-Section 5 1:35:49-Q30What are the Loop types in C#? 1:37:51-Q31What is the difference between “continue” and “break” statement? 1:39:54-Q32What is the difference between Array and ArrayList (atleast 2)? 1:42:01-Q33What is the difference between Arraylist and Hashtable? 1:43:34-Q34What are Collections in C# and what are their types? 1:45:44-Q35What is IEnumerable in C#? 1:48:54-Q36What is the difference between IEnumerable and IQueryable in C#? Why to use IQueryable in sql queries? 1:52:12-Section 6 1:53:09-Q37What is the difference between “out” and “ref” parameters? 2:00:14-Q38What is the purpose of “params” keyword? 2:01:47-Q39What is a Constructor? 2:05:12-Q40What are Extension Methods in C#? When to use them? 2:10:18-Q41What you mean by Delegate? When to use them? 2:14:00-Q42What are Multicast Delegates? 2:16:19-Q43What are Anonymous Delegates in C#? 2:17:36-Q44What are the differences between Events and Delegates? 2:20:25-Section7 2:21:17-Q45What is “this” keyword in C#? When to use it? 2:23:34-Q46What is the purpose of “using” keyword in C#? 2:25:48-Q47What is the difference between “is” and “as” operators? 2:29:08-Q48What is the difference between “Readonly” and “Constant” variables (atleast 3)? 2:34:23-Q49What is “Static” class? When to use it? 2:36:45-Q50What is the difference between “var” and “dynamic” in C#? Thanks