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C# Interview Questions PDF

1. Top 50 C# Interview Questions and
Answers To Get Hired
Top 50 C# Interview Questions and Answers: An
Overview
Explore our comprehensive guide featuring 50 essential C# interview questions and expertly
crafted answers. Whether you're a beginner or an experienced developer, this resource equips
you with in-depth knowledge to excel in C# interviews with the help of these C# language
questions. To make things easier for you, ScholarHat brings a comprehensive skill-oriented C#
certification to the nitty-gritty of the C# language. If you want to become a C# Developer just
go with the C# Developer Roadmap and be a master in it.
C# Interview Questions and Answers for Freshers
1. What are the features of C# language?
Let's begin with C# basic interview questions for freshers.

2. C# and C differ in several key aspects:
C#
C# is primarily object-oriented, emphasizing
classes and objects.
C
C is procedural, focusing on functions
and structures.
C requires manual memory allocation
and deallocation.
C#
(garbage collection), reducing the risk of memory
leaks. C# is designed for the .NET framework,
making it
platform-independent.
C# syntax is more modern and user-friendly,
incorporating features like properties, events, and
delegates. C# offers a rich standard library for
various tasks,
simplifying development.
has automatic memory management
C code needs to be recompiled for
different platforms.
These are not present in C.
C has a smaller standard library,
requiring more external libraries for
complex tasks.
Object-Oriented: C# supports object-oriented programming principles, allowing for
encapsulation, inheritance, and polymorphism.
Type-Safe: It enforces strong type checking, enhancing type safety and preventing type-
related errors.
Interoperability: C# can interoperate with other languages and libraries, facilitating
integration with existing systems.
Memory Management: C# uses automatic garbage collection to manage memory,
reducing the risk of memory leaks.
Exception Handling: It provides robust error-handling mechanisms, enabling developers to
handle exceptions gracefully.
Modern Language Features: C# includes features like properties, events, and delegates for
efficient and expressive coding.
3. Explain the evolution history of C#
2. How is C# different from the C programming language?

3. In C#, classes are essential for object-oriented programming. Here are the types of classes in
C#:
C# was developed by Microsoft in the late 1990s.
It was first released as part of the .NET framework in 2000.
C# 2.0 introduced generics and nullable types in 2005.
C# 3.0 brought language enhancements like LINQ and lambda expressions in 2007.
C# 5.0 introduced async and await keywords in 2012.
C# 7.0, 8.0, and 9.0 continued to add new features and improvements, enhancing the
language's capabilities.
In C# .NET, indexers allow objects to be indexed like arrays. They enable instances of a class to
be accessed using array-like syntax. Indexers are defined using special methods within a class
and provide a way to get or set values based on an index, enhancing the flexibility of custom
data structures.
In C#, the Just-In-Time (JIT) compiler is responsible for converting intermediate language (IL)
code into native machine code at runtime. It compiles methods on demand when they are first
called, optimizing code execution for specific hardware and improving the overall performance
of the application.
The Common Language Runtime (CLR) is a key component of the .NET framework. It provides a
runtime environment for executing managed code, enabling language interoperability and
automatic memory management. CLR manages program execution, ensuring code safety and
security, handling exceptions, and supporting features like garbage collection. It compiles
source code into an intermediate language (IL) and translates it to machine code at runtime,
allowing programs written in different languages to run on any platform with CLR support,
enhancing software development efficiency and flexibility.
5. What are indexers in C# .NET?
7. What are the types of classes in C#?
6. What is the JIT compiler process in C#?
4. What is Common Language Runtime (CLR)?

4. Contains only abstract methods.
Can have abstract and concrete methods.
Can have fields, constructors, and properties.
Supports access modifiers for methods and fields.
Allows method implementation.
Supports single inheritance.
Can contain access modifiers for classes.
Abstract Class: Cannot be instantiated and serves as a base for other classes.
Sealed Class: Prevents further inheritance, ensuring the class cannot be extended.
Static Class: Cannot be instantiated, contains only static members, often used for utility
functions.
Partial Class: Divides a class into multiple files, allowing multiple developers to work on it
simultaneously.
Garbage collection in C# is an automatic memory management process. It identifies and
deallocates unused objects, preventing memory leaks and optimizing memory usage.
Developers don't need to manually release memory, enhancing code reliability and
simplicity.
Automatic Memory Management: C# uses a garbage collector to automatically manage
memory.
Identifies Unused Objects: The garbage collector identifies and deallocates memory
occupied by objects no longer in use.
Prevents Memory Leaks: Ensures unused objects are removed, preventing memory leaks
and improving application stability.
Efficient Memory Usage: Optimizes memory usage by reclaiming memory from discarded
objects.
No Manual Cleanup: Developers don't need to manually release memory, reducing the risk
of bugs and improving developer productivity.
8. What is Garbage Collection in C#?
9. What is the difference between a C# abstract class and an
interface?
Abstract Class:
Interface:

5. Value Type
Store data directly in memory.
Derived from System.ValueType.
Reference Type
Store references to the memory location.
Derived from System.Object.
Cannot have fields, constructors, or method implementations.
All methods are public by default.
Supports multiple inheritance.
Cannot contain access modifiers for interfaces.
Abstract classes provide a way to share code among related classes, while interfaces define a
contract for classes to implement specific behaviors.
In C#, a datatype specifies the type of data a variable can hold. C# supports various datatypes,
including:
Value Types: Represents data with a specific value.
Integers: int, long, short
Floating-Point Numbers: float, double
Characters: char
Booleans: bool
Reference Types: Store references to the memory location of objects.
Classes: class
Interfaces: interface
Arrays: Array
Delegates: delegate
Strings: string
These datatypes enable developers to work with different kinds of data efficiently in C#.
10. What is Datatype in C#?
11. What is the difference between value types and reference
types in C#?

6. Examples include int, float, and
char.
Allocated on the stack.
Memory management is efficient.
Examples include classes, interfaces, and arrays.
Allocated on the heap.
Memory management is complex.
Copying creates new references pointing to the same
object.
Copying
copies.
creates independent
Inheritance in C# allows a class (derived or child class) to inherit properties and behavior from
another class (base or parent class). It promotes code reusability, enabling the creation of new
classes based on existing ones, and inheriting their attributes and methods while allowing
further customization and extension.
No, C# does not support multiple inheritance for classes. However, it supports multiple
inheritance through interfaces, allowing classes to implement multiple interfaces to achieve
similar functionality without the complications associated with multiple inheritance in classes.
13. What is Managed or Unmanaged Code in C#?
12. What is inheritance in C#? Does C# support multiple
inheritance?

7. Preprocessing: Directives are processed (#include, #define).
Compilation: Source code translated into intermediate language (IL).
Assembly: IL code packaged into assemblies (DLL or EXE).
Execution: Just-in-time (JIT) compiler translates IL to native code for specific platforms
during runtime.
Managed Code- Managed code in C# refers to the source code that is written to target the
Common Language Runtime (CLR) environment. It is executed by the CLR, which provides
services like memory management, security, and exception handling. Managed code
ensures better performance, security, and easier maintenance of applications.
Unmanaged Code- Unmanaged code in C# refers to code that runs outside the control of the
Common Language Runtime (CLR). It is typically written in languages like C or C++ and directly
interacts with system hardware and resources. Unmanaged code requires manual memory
management and lacks the safety features of managed code.
Definition: Both structs and classes are used to define custom data types in C#. Value vs
Reference Types: Structs are value types, stored directly in the stack memory, while
classes are reference types, stored in the heap memory, and accessed through references.
Inheritance: Classes support inheritance, allowing one class to inherit the properties and
methods of another. Structs do not support inheritance.
Performance: Structs are generally more lightweight and efficient than classes because
they are value types and don't require heap allocation. Nullable Value Types: Structs can
be made nullable using the '?' modifier, allowing them to represent null values. Classes are
inherently nullable. Default Constructor: Structs do not require a default constructor;
every struct is given a default value. Classes require a constructor even if it's not explicitly
defined. Usage: Structs are suitable for small data structures, representing a single value,
while classes are used for larger, more complex objects and behaviors.
16. What is enum in C#?
15. What is the difference between a struct and a class in C#?
14. Explain the four steps involved in the C# code compilation.

8. The main differences between the "ref" and "out" keywords in C# are:
"ref" keyword "ref" is used for passing variables by
reference, allowing both
input and output
"ref" requires the variable to be initialized before being
passed "ref" does not signal that the method must assign a
value to
the parameter before returning.
"ref" can be used to pass values and return results
"out" keyword
"out" is primarily for output
parameters
"out" does not
"out" does
"out" is typically used to
return results
Simplicity: Easy-to-learn syntax enhances readability and reduces complexity.
Versatility: Supports various programming paradigms, from procedural to object-oriented
and component-oriented.
Interoperability: Seamless integration with other languages and technologies, facilitating
code reuse.
Robustness: Strongly typed language with automatic garbage collection ensures memory
management and prevents common errors.
Scalability: Ideal for developing scalable applications and web services, accommodating
growth.
Security: Provides robust security features like code access security and role-based
security
An enum in C# is a value type that defines a set of named constants representing integral
values. It provides a way to create named numeric constants, making the code more
readable and self-documenting. Enums improve code clarity by replacing magic numbers
with descriptive and meaningful identifiers.
18. Mention all the advantages of C#.
19. What is Boxing and Unboxing in C#?
Boxing in C# :
17. What is the difference between ref and out keywords in C#?

9. Skips the remaining code inside the loop and moves to the next iteration.
Boxing in C# refers to the process of converting a value type to a reference type.
Value types include primitive data types like int, float, and char.
Reference types are objects derived from classes or interfaces.
Boxing allows value types to be treated as objects, enabling them to be stored in variables
of type Object.
It involves encapsulating the value type within an instance of the Object class.
Boxing incurs a performance overhead due to the conversion process.
Unboxing is the reverse process, extracting the value type from the boxed object.
In C#, properties are members of a class that provide a flexible way to read, write, or compute
the values of private fields. They encapsulate the internal state of an object by defining a getter
method to retrieve the value and an optional setter method to modify it. Properties allow
controlled access to an object's data, ensuring data integrity and encapsulation. They are
declared using the get and set accessors, providing a concise syntax for accessing class
attributes while enabling validation, calculations, and other logic if necessary.
Unboxing in C# refers to the process of converting a boxed value type (an object that wraps
a value type) back into its original value type.
Unboxing is essential when you want to retrieve the original value from an object that was
previously boxed.
It requires an explicit type cast using the appropriate value type, ensuring type safety.
Failure to cast correctly can result in runtime exceptions, such as InvalidCastException.
Unboxing is the reverse operation of boxing, where a value type is encapsulated in an object
for use in reference-type contexts.
Unboxing in C# :
Continue Statement:
20. What are Properties in C#?
21. What is the difference between “continue” and “break”
statements in C#?
C# Interview Questions and Answers for
Intermediates

10. Run Code >>
Continues the loop's next iteration, disregarding the rest of the loop code.
Useful when you want to skip specific conditions but continue looping.
Example-
Let's elaborate on this in C# Compiler:
Explanation
This program prints all even numbers between 1 and 10, skipping odd numbers using the
continue statement. In this example, the continue statement skips the Console.WriteLine(i)
statement for odd numbers (i % 2 != 0) and continue to the next iteration of the loop.
Output
using System;
class Program
{
static void Main()
{
Console.WriteLine("Even numbers between 1 and 10:");
for (int i = 1; i <= 10; i++)
{ if (i % 2 != 0) { // Skip odd numbers and continue to the
next iteration continue; } Console.WriteLine(i); }
}
}

11. using System;
class Program
{
static void Main()
{
int start = 1;
int end = 10;
Even numbers between 1 and 10:
2 4 6 8
10
Console.WriteLine("Loop execution completed.");
for (int number = start; number <= end; number++) { if (number % 2 == 0) {
Console.WriteLine("First even number found: " + number); break; // Breaks
out of the loop after finding the first even number } }
Break Statement:
Terminates the loop prematurely, exiting the loop's block of code.
Immediately exits the loop, regardless of any remaining iterations.
Helpful when you need to stop the loop execution based on a certain condition.
Example

12. Run Code >>
String- Immutable, meaning once created, cannot be changed. Each operation creates a
new string instance, which can impact performance.
String- Concatenation operations result in new string objects.
String- Thread-safe due to immutability.
Partial classes in C# allow a class's definition to be split across multiple files. Each part of the
class is declared with the partial keyword. When compiled, all parts are combined into a single
class definition. This feature is useful for dividing large classes into manageable and organized
sections.
Explanation
In this code, the loop runs from 1 to 10. When it encounters the first even number (2 in this
case), it prints the number, executes the break statement, and exits the loop. Then, the program
prints "Loop execution completed."
Output
}
}
First even number found: 2
Loop execution complet
public partial Class_name
{
// Code
}
22. What are partial classes in C#?
23. What is the difference between String and StringBuilder in C#?
Syntax

13. Example
Run Code >>
StringBuilder: Mutable, allowing dynamic modification of content without creating new
instances. Ideal for extensive string manipulations, enhancing performance as it
reduces memory allocations. StringBuilder: Efficient for concatenating multiple strings,
reducing memory overhead. StringBuilder: Not inherently thread-safe, suitable for
single-threaded operations, but can be synchronized manually if needed.
Output
Example

Hello, World
using System;
using System.Text;
using System;
class Program
{
static void Main()
{
// Define a string variable
string message = "Hello, World!";

// Print the string to the console
Console.WriteLine(message);
}
}

14. Output
Hello, world!
Welcome to C#.
string result = stringBuilder.ToString();
Console.WriteLine(result);
}
}
stringBuilder.Append("Hello, ");
stringBuilder.Append("world!");
stringBuilder.AppendLine(" Welcome to C#.");
class Program
{
static void Main()
{
StringBuilder stringBuilder = new StringBuilder();
24. What is the use of a Delegate in C#?
In C#, delegates serve as function pointers, allowing methods to be treated as first-class
objects. They enable:
Run Code >>
Method Indirection: Delegates allow indirect method invocation, enabling dynamic method
calls.
Event Handling: Delegates are commonly used to implement event handling, allowing
objects to subscribe and respond to events.
Callback Mechanisms: Delegates facilitate callback functionalities, enabling one method
to call another upon completion of a task.

15. Value is assigned at compile-time and cannot be changed.
Defined using the const keyword.
Belongs to a compile-time constant value.
Can be used in any context, including as array sizes.
Value is assigned at runtime or in a constructor and cannot be changed thereafter.
Defined using the readonly keyword.
Belongs to an instance of the class and can have different values for different instances.
Used for instance-level constant values that are determined at runtime.
In C#, a jagged array is an array whose elements are arrays. Unlike a regular two-dimensional
array, jagged arrays can have varying lengths for each row, allowing for more flexibility in
representing complex data structures. Each element of a jagged array can be an array of
different sizes and dimensions.
Asynchronous Programming: Delegates are fundamental in asynchronous programming,
supporting the invocation of methods upon task completion.
Decoupling Components: Delegates promote loose coupling by allowing objects to interact
without direct references, enhancing modularity and maintainability.
26. What is Jagged Arrays in C#?
25. What is the difference between constant and read-only in C#?
Constant:
Read-only:

16. 28. Can “this” be used within a static method in C#?
Yes, the "this" keyword can be used within a static method in C# to reference static members
of the class. However, it cannot be used to refer to instance members because static methods
are not associated with a specific instance of the class.
29. What are the different ways in which a method can be
Overloaded in C#?
In C#, methods can be overloaded in several ways:
27. What is the difference between late binding and early binding
in C#?
Early Binding
Occurs at compile-time.
Type checking is done at compile-time.
Provides better performance as the method
or property is resolved at compile-time.
Late Binding
Occurs at runtime.
Type checking is done at runtime.
Provides more flexibility but may lead to
performance
resolution.
Achieved using reflection or dynamic keyword
in C#.
overhead due to runtime
Achieved using the "static" keyword in C#.
Different Parameter Types: Methods can be overloaded by having different parameter
types.
Different Number of Parameters: Overloading can be done by varying the number of
parameters in the method.
Different Parameter Order: Methods can have the same parameter types but in a different
order.
Different Data Types: Overloading is possible by using different data types for parameters.
Optional Parameters: Overloading can be achieved by using optional parameters in
methods.
Different Return Types: Overloading based on different return types is not allowed; it's not a
valid way to differentiate methods.

17. Run Code >>
The given code in the C# Editor defines an extension method called CapitalizeFirstLetter for
the string class, which capitalizes the first letter of a string. To use this extension method,
you would call it on a string object.
These techniques enable developers to create methods with the same name but different
behaviours based on input parameters.
In C#, an extension method is a static method that allows developers to add new methods to
existing types without modifying their source code. These methods are defined in static
classes and can be called as if they were instance methods of the extended type, providing a
way to extend the behaviour of classes without inheritance or modification of the original code.
30. What is an extension method in C#?
Output
Example
Explanation
Hello world
public static class StringExtensions
{
public static string CapitalizeFirstLetter(this string str)
{
if (string.IsNullOrEmpty(str))
return str;
return char.ToUpper(str[0]) + str.Substring(1);
}
}

18. 32. What is IEnumerable<> in C#?
IEnumerable<> is an interface in C# that represents a collection of objects that can be
enumerated (iterated) one at a time. It is defined in the System.Collections namespace.
Implementing IEnumerable<> allows objects to be iterated using a foreach loop. It includes a
single method, GetEnumerator(), which returns an IEnumerator<> interface for iterating
through the collection.
33. What are the differences between IEnumerable and
IQueryable?
IEnumerable and IQueryable are both interfaces in C# for querying collections of data, but they
have key differences:
31. What is the difference between Dispose and Finalize in C#?
Dispose():
Finalize():
IQueryable:
IEnumerable:
Suitable for in-memory collections like lists and arrays.
Executes queries locally in memory.
Pulls all data into memory before filtering, sorting, or projecting.
Limited support for deferred execution.
Suitable for LINQ to Objects.
Used for releasing unmanaged resources explicitly.
Implemented through the IDisposable interface.
Invoked by the developer to release resources when they are no longer needed.
Provides a way to clean up resources before the object is garbage collected.
Also known as a destructor in C#.
Automatically called by the garbage collector to clean up unmanaged resources.
No guarantee on when it will be executed.
Generally used as a backup cleanup mechanism if Dispose() is not called explicitly.

19. Multi-Dimensional Arrays: Contains elements in multiple rows and columns.
Designed for querying data stores like databases.
Executes queries on the data source, minimizing data transfer.
Supports deferred execution with expressions.
Suitable for LINQ to Entities (Entity Framework) and other data access technologies.
In C#, an array is a collection of elements of the same data type, grouped together under a
single name. Arrays allow you to store and manipulate multiple values of the same type.
They are defined using square brackets and can store elements such as integers, strings, or
custom objects. Array elements are accessed by their index, starting from 0.
In C#, there are mainly three types of arrays:
Single-Dimensional Arrays: Contains elements in a single row.
Constructor chaining in C# refers to the process of calling one constructor from another within
the same class or in a derived class. It allows you to reuse code and initialize object properties
in different ways. By using "this" keyword to invoke another constructor in the same class or
"base" keyword to invoke a constructor in the base class, developers can streamline object
creation and initialization.
Jagged Arrays: Array of arrays where each element can be an array, allowing different
lengths for each row.
34. What are the Arrays in C#?
35. What is the Constructor Chaining in C#?
36. What’s the difference between the Array.CopyTo() and
Array.Clone()?
C# Interview Questions and Answers for
Experienced

20. No, in C#, only one catch block is executed when an exception is thrown. The catch blocks are
evaluated sequentially, and the first catch block that matches the type of the thrown exception
will be executed. Once a matching catch block is found and executed, the control will not pass
to any subsequent catch blocks in the same try-catch block structure.
In C#, a jagged array is an array whose elements are arrays themselves. Unlike a
multidimensional array, jagged arrays allow each row to have a different length. This flexibility
is useful when dealing with data structures where the size of the elements varies, enabling
efficient memory usage and manipulation of complex data sets in C# programs.
In C#, reflection is a mechanism that allows you to inspect and manipulate assemblies,
modules, and types at runtime. It enables you to dynamically load assemblies, create instances
of types, invoke methods, and access properties and fields, even if those types are not known
at compile time. Reflection is commonly used for tasks like creating plugins, serialization, and
dynamic code generation.
Array.CopyTo(): Copies elements from one array to another array. The destination array
must already exist and have compatible data types. You can specify the index from which to
start copying in the destination array. Array.Clone(): Creates a shallow copy of the array. It
creates a new array with the same
length and data type as the original array. Changes to elements in the cloned array do not
affect the original array, but if the elements are reference types, they still refer to the same
objects as the original array.
In summary, CopyTo() copies elements to an existing array, allowing customization of the
destination index, while Clone() creates a new array with the same elements and data types,
providing a shallow copy of the original array.
37. What is Reflection in C#?
39. What is Jagged Arrays in C#?
40. What are sealed classes in C#?
38. Can multiple catch blocks be executed in C#?

21. Constructor chaining in C# allows a constructor to call another constructor within the same
class. This enables reusability and reduces code duplication by allowing constructors to
invoke other constructors in the same class using the "this" keyword. It simplifies object
initialization by providing multiple ways to construct objects with different parameters,
enhancing code
flexibility and readability.
Generics in C# allow you to create classes, interfaces, methods, and delegates with a
placeholder for the data type. This enables you to design flexible and reusable code by
In C#, a multicast delegate is a delegate that can hold and invoke multiple methods
simultaneously. It can reference multiple methods, allowing them to be invoked sequentially
when the delegate is called. This enables the invocation of multiple methods through a single
delegate, simplifying event handling and callback scenarios in applications.
In C#, a sealed class is a class that cannot be inherited by other classes. It is marked with the
"sealed" keyword to prevent further derivation. Sealed classes are typically used to restrict the
inheritance hierarchy, ensuring that specific classes cannot be extended, providing better
control over the code, and preventing unintended modifications or extensions.
Syntax
}
sealed class class_name
{
// data members
// methods
. .
.
43. What are Generics in C#?
42. What is a multicasting delegate in C#?
41. What is the Constructor Chaining in C#?

22. Keywords called "access modifiers" specify how accessible a class, member, or datatype is
inside a program. These are mostly used to prevent unauthorized programs or classes from
manipulating data. The four main modifiers are:
Public: Members are accessible from any code.
Private: Members are accessible only within the same class.
Protected: Members are accessible within the same class or its derived classes.
Internal: Members are accessible within the same assembly (DLL).
specifying the actual data type when the code is used, ensuring type safety and performance
improvements. Generics enhance code readability and maintainability by writing algorithms
and data structures that work with any data type.
In C#, a virtual method is a method declared in a base class with the virtual keyword, allowing
derived classes to provide their implementation by overriding the method. This enables
polymorphism, where the appropriate method of the derived class is called at runtime based
on the actual type of the object, facilitating dynamic method binding and inheritance-based
behavior customization.
Multithreading in .NET allows programs to perform multiple tasks concurrently, enhancing
performance and responsiveness. It enables the execution of multiple threads within a
process, allowing applications to perform tasks simultaneously. .NET provides classes like
System.Threading.Thread and ThreadPool to create and manage threads, facilitating efficient
utilization of system resources and improved user experience in multithreaded applications.
A hash table class in C# is a data structure that stores key-value pairs, providing fast retrieval
of values based on their associated keys. It uses a hash function to map keys to indices in an
internal array, allowing constant-time average complexity for basic operations like insertion,
45. What is a Virtual Method in C#?
47. What is a Hash table class in C#?
46. What is Multithreading with .NET?
44. Describe Accessibility Modifiers in C#?

23. LINQ (Language Integrated Query) is a feature in C# that enables developers to query and
manipulate different types of data, such as arrays, collections, databases, and XML, using a
consistent and readable syntax. It allows developers to write SQL-like queries directly in
C# code, providing powerful and efficient data querying capabilities. LINQ simplifies data
manipulation and retrieval tasks, enhancing productivity and readability in C#
programming.
deletion, and lookup. The Hashtable class in C# is an implementation of a hash table, part of
the System.Collections namespace, providing these functionalities.
In C#, namespaces are used to organize and categorize code elements, such as classes,
interfaces, and methods, into logical groups. They prevent naming conflicts by providing a
way to uniquely identify types within an application. Namespaces improve code
readability,
maintainability, and reusability by creating a hierarchical organization of classes and other
code elements, making it easier to manage large and complex projects.
In conclusion, mastering these top 50 C# interview questions and answers is essential for
excelling in C# programming interviews. By understanding these concepts thoroughly,
candidates can confidently navigate challenging interview scenarios, showcasing their
skills and knowledge. You can also consider doing our C# tutorial from Scholar Hat by Dot
Net Tricks to upskill your career. Practice, understanding, and confidence in these areas
will undoubtedly pave the way to a successful C# programming career.
File handling in C# refers to the process of working with files, such as reading from or writing to
them. C# provides various classes and methods in the System.IO namespace to perform file
operations. Developers can create, delete, read, write, and manipulate files using these
classes, enabling efficient management of data stored in files within C# applications.
49. What is LINQ in C#?
50. What is File Handling in C#?
48. What are namespaces in C#?
Summary
FAQs

24. Q3. What is the general knowledge of C#?
Q1. How to prepare for C# coding interview?
Q2. What is class in C# interview questions?
In less than 5 minutes, with our skill challenge, you can identify
your knowledge gaps and strengths in a given skill.
Classes are the foundation of C#. A class is a template that defines a data structure and how
data will be stored, managed, and transferred
Learn Basic C# Coding Concepts and Interview Q&As
1. Object-Oriented Programming (OOP) Concepts. Question: How would you explain the
concept of encapsulation in C#?
2. Delegates and Events.
3. Exception Handling.
4. LINQ (Language Integrated Query) 
C# is a type-safe, object-oriented language used to create . Net applications with a component-
oriented approach
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