Learn C Sharp Programming From Scratch

Explore C# access modifiers—public, protected, internal, and private—and how default private limits access; see how to expose internals to another assembly with InternalsVisibleTo.

Learn how interfaces define members to implement, support multiple interfaces, and enable explicit implementation to choose the interface method called in classes like rectangles and polygons.

Learn how enums assign default values and underlying types, override values, and cast to integers. Explore bit flags with powers of two for bitwise operations and working day checks.

Explore generics to design type-safe classes and methods, replacing placeholders with chosen types to enable safe collections like stack and generic operations such as swap.

Explore advanced generics in C# by applying constraints (struct, class, base type, or interface) to guarantee members, and study open and closed constructed types with static data per close type.

Delegates represent methods and allow you to pass, invoke, and chain them by matching signatures, such as transformer, to apply polynomial and linear functions.

Learn how multicast delegates work in C#, use plus and minus operators to build method sequences, and apply generic delegates like Action and Func.

Learn how lambda expressions create anonymous functions for delegates and queries in C#. Explore closures capturing variables, using Func, and applying lambdas in events with examples like squaring numbers.

Extend existing types with static extension methods that appear as instance methods, using a static class and this as the first parameter to extend classes and interfaces.

Learn how to use anonymous types in C#, creating a custom type without explicit definition, with read-only properties inferred by the compiler and used with dot notation to compare instances.

Explore how to work with C# collections to store and traverse arrays, lists, dictionaries, and other collection types, and implement enumerable interfaces to enable for each iteration.

Learn core c sharp collections, including doubly linked lists, queues, stacks, bit arrays, and hash sets/tables, with operations like contains, add, remove, and efficient insertions.

Explore C# LINQ queries as a first-class language construct that easily queries collections—from arrays to remote data sources—with compile-time checking and a three-step process: obtain, create, and execute.

Explore advanced linq queries in c sharp by comparing query syntax and method syntax, covering from where, select, deferred and immediate execution, aggregates, ordering, and joins.

Explore linq operators, including join, group join, and group by, generation with defaults for empty sequences, equality checks, element retrieval, concatenation, and aggregation like average, count, max, min, and sum.

Learn to build and chain LINQ queries in C# using method syntax, with where and order by clauses, and project results using anonymous types.

Learn how to use LINQ to SQL to map a relational database to C# objects, perform insert, update, and delete operations via a data context and submit changes.

Explore the stream architecture in c#, where streams, as abstract byte sequences, connect files, pipes, and sockets; perform read, write, and optional seek, with disposal, buffering, timeouts, and asynchronous support.

Explore C# streams, including file stream, memory stream, buffered stream, network stream, pipe stream, and encrypt stream, with readers and writers for text and encoded data.

Master directory and file operations in C# by creating, copying, deleting, moving, and opening files, and managing directories with FileInfo, DirectoryInfo, and Path; apply access controls with FileSecurity and DirectorySecurity.

Explore networking in C# from scratch, using web client, HTTP client, DNS, SMTP, and TCP/UDP clients, and compare TCP with UDP.

Learn how to use http client to send requests with custom headers, build query strings, post data, and manage cookies with a cookie container, including encoding and handling response headers.

Explore c# threads to perform concurrent processing, create and start threads, use join and sleep for synchronization, manage thread states, and avoid deadlocks or race conditions by keeping resources separate.

Explore how to create and manage threads in C#, using lambda expressions and ThreadStart to pass data. Understand foreground versus background threads, priorities, thread pools, and manual reset events.

Explore C# tasks as a more efficient, scalable alternative to threads, with support for waiting, cancellations, and continuations. Create tasks, return results, handle exceptions, and chain continuations to manage concurrency.