This five-day course is designed for the experienced programmer to help you quickly come up to speed on the essentials of the C# language and.NET. It is current to Visual Studio 2026 and .NET 10.

Microsoft .NET is a programming technology that greatly simplifies application development, both for traditional, proprietary applications and for web-based applications and services. The original .NET was a complete restructuring of Microsoft’s whole system infrastructure and represented a major learning challenge for programmers developing applications on Microsoft platforms. Part of .NET included a major new object-oriented programming language, C#. But learning the new programming language is only part of the challenge. The much greater challenge is learning the .NET Class Library and its many capabilities.

A major new restructuring of the .NET platform, .NET Core is cross-platform, open source, and modular designed for creating modern web applications and services, libraries and console applications. It is available on Windows, Mac and Linux. .NET now is a family of frameworks, including both the classical .NET available on Windows and the new .NET Core package-based frameworks that are cross-platform. This course is designed to run on .NET 10.0, which is an LTS (Long Term Support) version of .NET Core.

The first module of the course covers the C# language and core features of C# and .NET, including delegates and events and an introduction to Windows Forms. The second module focuses on core portions of the .NET Class Library that are common across many application areas. It starts with an introduction to the architecture and key concepts of .NET. The course then discusses class libraries, packages, metapackages and frameworks. The following chapters discuss important topics in the .NET programming model, including metadata and reflection, I/O and serialization, memory management, processes and threads. The course concludes with a chapter on threading, which includes an introduction to the Task Parallel Library (TPL).

The course is provided as a combination of two courses, which can also be ordered separately:

• C# Essentials (3 days)
• .NET Essentials (2 days)

• Acquire a working knowledge of C# programming
• Learn about important interactions between C# and.NET
• Learn how to implement simple GUI programs using Windows Forms
• Gain a thorough understanding of the philosophy and architecture of .NET Core
• Understand packages, metapackages and frameworks
• Acquire a working knowledge of the .NET programming model
• Implement multi-threading effectively in .NET applications

• What is .NET?
• .NET Framework, NET Core and .NET 10
• Application Models
• Managed Code
• Visual Studio 2026
• Console Programs and New Console Template
• GUI Programs

• First C# Console Application
• Namespaces
• Data Types
• Conversions
• Control Structures
• Subroutines and Functions
• Parameter Passing
• Strings
• Arrays
• Implicitly Typed Variables
• Console I/O
• Formatting
• Exception Handling

• Classes
• Access Control
• Methods and Properties
• Asymmetric Accessor Accessibility
• Static Data and Methods
• Constant and Readonly Fields
• Auto-Implemented Properties
• Inheritance
• Overriding Methods
• Abstract Classes
• Sealed Classes
• Access Control and Assemblies

• Components
• Interfaces
• System.Object
• Collections
• IEnumerable and IEnumerator
• Copy Semantics in C#
• Generic Types
• Type-Safe Collections
• Object Initializers
• Collection Initializers
• Anonymous Types
• Attributes

• Delegates
• Anonymous Methods
• Lambda Expressions
• Random Number Generation
• Events

• Creating Windows Applications Using Visual Studio 2022
• Partial Classes
• Buttons, Labels and Textboxes
• Handling Events
• Listbox Controls

• Dynamic Data Type
• Named and Optional Arguments
• Variance in Generic Interfaces
• Asynchronous Programming Keywords
• Nullable Reference Types
• Record Types
• Top-level Statements

• What Is LINQ?
• Basic Query Operators
• Filtering
• Ordering
• Aggregation

• Unsafe Code
• C# Pointer Type

• Signing in to Visual Studio
• Overview of Visual Studio 2026
• Creating a Console Application
• Project Configurations
• Debugging
• Multiple-Project Solutions

• What is Microsoft .NET?
• Common Language Runtime
• Framework Class Library
• Language Interoperability
• Managed Code
• .NET Core, .NET 10, and Cross-Platform Development

• Components in .NET
• Class Libraries Using Visual Studio
• Using References

• .NET Implementations and Frameworks
• .NET Standard
• NuGet Packages and Gallery
• Metapackages and Frameworks
• Packages in .NET 10
• Porting from Classical .NET to .NET 10
• Visual Studio Package Manager
• Installing Packages
• Creating Packages

• Metadata
• Reflection
• Late Binding

• Directories
• Files and Streams
• XML Serialization

• Garbage Collection
• Finalize and Dispose
• Processes
• Command-Line Arguments
• Threads

• Threading Fundamentals
• ThreadPool
• Foreground and Background Threads
• Synchronization
• Task Parallel Library