AboutTeamsPricing
New content added weeklyLive

Master C Sharp (C#) with Adaptive AI.

Master C Sharp (C#) across 30 topics - Foundations, OOP and Collections, and Advanced C# - guided by Leyaa's adaptive intelligence.

3Parts
30Topics
266Patterns
65hEst. duration
Start Learning Free
C Sharp (C#)
C Sharp (C#) Course
3 - part learning journey
Beginner
Foundations
11 topics · 93 patterns
Beginner
Intermediate
OOP and Collections
10 topics · 87 patterns
Intermediate
Advanced
Advanced C#
9 topics · 86 patterns
Advanced
Begin Part 1: Foundations
✦ Course Structure

Your C Sharp (C#) Journey in 3 Parts

Each part builds on the last - a deliberate progression from beginner to advanced.

Beginner
Beginner
Part 1: Foundations
Covers C# Basics and .NET Runtime, Variables and Type System, Data Types and 8 more topics.
11Topics
93Patterns
View topics
Intermediate
Intermediate
Part 2: OOP and Collections
Covers Strings and StringBuilder, Classes and Objects, Properties and Encapsulation and 7 more topics.
10Topics
87Patterns
View topics
Advanced
Advanced
Part 3: Advanced C#
Covers Delegates and Lambda Expressions, Events, Generics and 6 more topics.
9Topics
86Patterns
View topics
Curriculum

Everything You'll Learn

Explore every topic and pattern in the course.

C Sharp (C#)

3 parts · 30 topics · 266 patterns
Beginner
Part 1: Foundations11 topics · 93 patterns
Beginner
01
C# Basics and .NET Runtime
8 patterns
What is C#
Why C# and the .NET ecosystem
How C# compiles and runs on CLR
.NET SDK Installation and Setup
Project structure and csproj file
Main method as entry point
Top-level statements in modern C#
Namespaces and using directives
02
Variables and Type System
8 patterns
Why strong typing matters in C#
Variable declaration and initialization
Value types vs reference types mental model
Implicit typing with var keyword
Constants and readonly fields
Naming conventions in C#
Nullable value types
Default values for types
03
Data Types
8 patterns
Integer types and their ranges
Floating point types (float, double, decimal)
Char type and Unicode behavior
String type and immutability
Boolean type behavior
Type conversion and casting
Checked and unchecked arithmetic
Object type as universal base
04
Operators and Expressions
9 patterns
Why operators matter
Arithmetic operators
Comparison operators
Logical operators
Assignment and compound assignment
Null-conditional operator
Null-coalescing operator
Ternary conditional operator
Operator precedence and evaluation order
05
Console Input and Output
8 patterns
Why console IO is important
Console.WriteLine and Write methods
String interpolation
Composite formatting
Console.ReadLine for input
Parsing input to numeric types
TryParse for safe conversion
Format specifiers for numbers and dates
06
Conditional Statements
8 patterns
Why conditional flow control is needed
If statement execution flow
If-else execution flow
Else-if ladder execution
Nested conditional execution
Switch statement execution
Switch expression (modern C#)
Pattern matching in switch
07
Enums
8 patterns
Why enums are needed
Enum declaration syntax
Underlying numeric values
Explicit value assignment
Enum parsing from strings
Flags attribute and bitwise enums
Enum with switch pattern
Enum vs constants decision
08
Loops
8 patterns
Why loops are needed
For loop execution model
While loop execution model
Do-while loop execution model
Foreach loop over collections
Nested loop execution
Break statement behavior
Continue statement behavior
09
Methods
10 patterns
Why methods are needed
Method declaration and calling
Parameters and arguments
Return values and void methods
Method overloading
Optional parameters
Named arguments
Ref and out parameters
Params keyword for variable arguments
Expression-bodied methods
10
Arrays
9 patterns
Why arrays are needed
Single-dimensional array declaration
Array indexing and access
Array bounds checking behavior
Array iteration with for and foreach
Multi-dimensional arrays
Jagged arrays
Array methods (Sort, Reverse, IndexOf)
Array as reference type behavior
11
Memory Model and Value vs Reference Semantics
9 patterns
Why understanding memory matters in C#
Stack vs heap mental model
Value type copying behavior
Reference assignment and shared state
Passing value types to methods
Passing reference types to methods
Boxing and unboxing execution
Performance implications of boxing
Common bugs from reference sharing
Intermediate
Part 2: OOP and Collections10 topics · 87 patterns
Intermediate
01
Strings and StringBuilder
10 patterns
Why string handling matters
String creation and literal types
String concatenation behavior
String interpolation and formatting
Common string methods
String comparison and equality
String searching and extraction
StringBuilder and why it exists
StringBuilder methods and performance
Verbatim and raw string literals
02
Classes and Objects
10 patterns
Why classes are needed
Class declaration syntax
Object instantiation with new
Instance fields and state
Methods that operate on state
Constructors and initialization
Constructor overloading
This keyword behavior
Access modifiers (public, private, internal)
Static members vs instance members
03
Properties and Encapsulation
8 patterns
Why encapsulation matters
Properties vs fields
Auto-implemented properties
Get and set accessors
Read-only and write-only properties
Init-only setters
Computed properties
Property validation logic
04
Inheritance
8 patterns
Why inheritance is needed
Base class and derived class
How constructor chaining works
Method overriding with virtual and override
Base keyword behavior
Sealed classes and methods
Protected access modifier
Is-a relationship mental model
05
Polymorphism and Abstract Classes
7 patterns
Why polymorphism matters
Runtime polymorphism execution
Abstract classes and methods
When to use abstract vs concrete
Casting with as and is operators
Type checking patterns
Virtual method dispatch mechanism
06
Interfaces
8 patterns
Why interfaces are needed
Interface declaration syntax
Implementing interfaces
Multiple interface implementation
Interface as contract mental model
Default interface methods
Explicit interface implementation
Interface vs abstract class decision
07
Collections
9 patterns
Why collections over arrays
List generic collection
List methods (Add, Remove, Find, Sort)
Dictionary key-value collection
Dictionary methods and access patterns
HashSet for unique elements
Queue and Stack behavior
LinkedList usage
Collection initialization syntax
08
LINQ Fundamentals
10 patterns
Why LINQ is needed
LINQ query syntax
LINQ method syntax
Where clause filtering
Select clause projection
OrderBy and sorting
GroupBy operation
Aggregate functions (Count, Sum, Average)
First, Single, and their OrDefault variants
LINQ with custom objects
09
Exception Handling
9 patterns
Why exception handling is needed
Try-catch execution flow
Multiple catch blocks
Exception hierarchy in .NET
Finally block behavior
Throw and rethrow patterns
Custom exception classes
When clause in catch
Using statement for resource cleanup
10
File IO
8 patterns
Why file operations matter
File class static methods
Reading text files
Writing text files
StreamReader and StreamWriter
File paths and Directory operations
Working with JSON files
Using statement with file streams
Advanced
Part 3: Advanced C#9 topics · 86 patterns
Advanced
01
Delegates and Lambda Expressions
10 patterns
Why delegates are needed
Delegate declaration and instantiation
Multicast delegates
Action delegate type
Func delegate type
Predicate delegate type
Lambda expression syntax
Lambda with captures (closures)
Expression-bodied lambdas
Delegates as callback pattern
02
Events
8 patterns
Why events are needed
Event declaration syntax
Publisher-subscriber execution model
EventHandler delegate pattern
Custom event arguments
Raising events safely
Event unsubscription and memory
Event-driven design pattern
03
Generics
9 patterns
Why generics are needed
Generic class declaration
Generic method declaration
Generic constraints (where clause)
Multiple generic parameters
Generic interfaces
Covariance with out keyword
Contravariance with in keyword
Default keyword for generic types
04
Advanced LINQ
9 patterns
Why advanced LINQ matters
Join and GroupJoin operations
SelectMany for flattening
Zip operation
Set operations (Union, Intersect, Except)
Deferred execution behavior
Immediate execution methods
Custom LINQ extension methods
LINQ performance considerations
05
Asynchronous Programming
12 patterns
Why async programming is needed
Task and Task of T types
Async and await keywords
How async execution flows
Returning values from async methods
Exception handling in async code
Task.WhenAll for parallel execution
Task.WhenAny for first completion
ConfigureAwait behavior
Async streams with IAsyncEnumerable
Async file reading and writing
Stream vs async stream behavior
06
Records and Value Types
9 patterns
Why records were introduced
Record declaration syntax
Value equality in records
With expressions for immutable copies
Record inheritance
Struct declaration and behavior
Readonly structs
Record structs
Value type vs reference type performance
07
Pattern Matching
10 patterns
Why pattern matching matters
Type patterns
Constant patterns
Relational patterns
Logical patterns (and, or, not)
Property patterns
Positional patterns
List patterns
Switch expressions with patterns
Recursive pattern matching
08
Extension Methods and Indexers
8 patterns
Why extension methods are needed
Extension method syntax
Extension methods for built-in types
Why LINQ depends on extension methods
Fluent interface with extensions
Indexer declaration
Indexer with custom types
Multi-parameter indexers
09
Reflection and Attributes
11 patterns
Why reflection is needed
Getting type information at runtime
Inspecting methods and properties
Creating instances dynamically
How reflection bypasses compile-time safety
Runtime cost of dynamic type resolution
Attribute declaration syntax
Built-in attributes (Obsolete, Serializable)
Custom attribute classes
Reading attributes with reflection
Attribute targets and usage
Why Leyaa

Not just a course. A learning intelligence.

Leyaa doesn't just deliver content - it understands where you are, what you need, and how to get you there fastest.

Adaptive Diagnostics
Adaptive Diagnostics
Leyaa identifies which of the 266 patterns you've mastered and which need work - before you waste time on what you already know.
Pattern-Level Precision
Pattern-Level Precision
Every pattern gets a verdict - Learn, Practice, or Skip - so your study time goes exactly where it counts.
Intelligent Pacing
Intelligent Pacing
Leyaa reads your velocity across the whole course and adapts your focus list dynamically, keeping you in the optimal learning zone.
Before & After Visibility
Before & After Visibility
Every assessment creates a snapshot. Retake anytime to see exactly how much you've grown - topic by topic, pattern by pattern.
Learner Autonomy
Learner Autonomy
Leyaa recommends, never restricts. Override any suggestion and explore at your own pace - the system tracks everything regardless.
Clear Learning Path
Clear Learning Path
Foundations → OOP and Collections → Advanced C# - a structured journey where each part sets you up perfectly for the next.
C Sharp (C#)

Ready to master C Sharp (C#)?
Start your journey today

Start your diagnostic now. Build mastery across all 30 topics in under 15 minutes.

30 Topics
266 Patterns
Personalized roadmap
Leyaa Swift Bird