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C# Programming Interview Questions

S.No	Question
1.	What is C# and its significance?
2.	Explain the features of C#.
3.	What is the difference between C# and C++?
4.	What are the different types of applications you can develop using C#?
5.	Explain the concept of .NET framework and its role in C# development.
6.	What is the Common Language Runtime (CLR) in C#?
7.	What are the advantages of using C# over other programming languages?
8.	Explain the difference between value types and reference types in C#.
9.	What is the role of the using statement in C#?
10.	Explain the concept of garbage collection in C#.
11.	How do you declare variables in C#?
12.	Explain the different data types available in C#.
13.	What is type conversion and how is it done in C#?
14.	Explain the concept of implicit and explicit type conversion in C#.
15.	What are the arithmetic operators in C#?
16.	How do you perform string concatenation in C#?
17.	Explain the concept of relational operators in C#.
18.	What are the logical operators in C#?
19.	How do you handle null values in C#?
20.	Explain the concept of ternary operators in C#.
21.	What is the purpose of if-else statements in C#?
22.	Explain the switch statement in C#.
23.	How do you use for loops in C#?
24.	Explain the concept of nested for loops in C#.
25.	What is the purpose of while loops in C#?
26.	Explain the difference between while and do-while loops in C#.
27.	What is the use of the break statement in C#?
28.	How do you skip iterations in a loop using the continue statement in C#?
29.	Explain the concept of goto statement in C#.
30.	How do you exit a loop or a method using the return statement in C#?
31.	How do you declare and initialize arrays in C#?
32.	Explain the concept of accessing array elements in C#.
33.	How do you find the length of an array in C#?
34.	What is the difference between arrays and lists in C#?
35.	How do you declare and access elements in a 2D array in C#?
36.	Explain the concept of multidimensional arrays in C#.
37.	What is the purpose of jagged arrays in C#?
38.	How do you sort elements in an array in C#?
39.	Explain the concept of array covariance in C#.
40.	What is a method in C#?
41.	How do you define methods in C#?
42.	Explain the concept of passing arguments to a method in C#.
43.	What is method overloading and how is it done in C#?
44.	Explain the difference between parameters and arguments in C#.
45.	How do you return values from a method in C#?
46.	What is the difference between void and non-void methods in C#?
47.	Explain the concept of recursion in C# methods.
48.	What is the purpose of ref and out keywords in C#?
49.	How do you handle optional parameters in C# methods?
50.	What is object-oriented programming (OOP) and its principles?
51.	Explain the concept of objects and classes in C#.
52.	What are constructors in C# and how are they used?
53.	What is the 'this' keyword used for in C#?
54.	Explain the concept of static members in C#.
55.	How do you create an array of objects in C#?
56.	Explain the concept of inheritance in C#.
57.	What is method overriding and how is it done in C#?
58.	Explain the use of the 'base' keyword in C#.
59.	What is the difference between abstract classes and interfaces in C#?
60.	What is an interface in C#?
61.	How do you implement multiple interfaces in C#?
62.	Explain the concept of multiple inheritance in C#.
63.	What are namespaces in C# and how are they used?
64.	How do you create your own namespaces in C#?
65.	Explain the concept of access specifiers in C#.
66.	What is the difference between public, private, protected, and internal in C#?
67.	How do you handle naming conflicts in C# namespaces?
68.	What is exception handling in C#?
69.	Explain the try-catch-finally block in C#.
70.	How do you handle multiple exceptions in C#?
71.	What is the difference between throw and throw ex in C#?
72.	How do you create custom exceptions in C#?
73.	Explain the concept of exception filters in C#.
74.	What is an enum in C# and how is it used?
75.	Explain the concept of collections in C#.
76.	How do you create a List in C#?
77.	What are the different methods available in the List class in C#?
78.	Explain the concept of dictionaries in C#.
79.	How do you add and retrieve elements from a dictionary in C#?
80.	What is the difference between List and Array in C#?
81.	What is LINQ in C#?
82.	Explain the different types of LINQ queries in C#.
83.	How do you use LINQ to query objects in C#?
84.	What is the purpose of the 'var' keyword in LINQ?
85.	Explain the concept of deferred execution in LINQ.
86.	How do you perform sorting and filtering using LINQ in C#?

C# Programming Interview Questions

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