Programming concepts (C#)

Article
04/25/2024

This section explains programming concepts in the C# language.

In this section

Title	Description
Covariance and Contravariance (C#)	Shows how to enable implicit conversion of generic type parameters in interfaces and delegates.
Iterators (C#)	Describes iterators, which are used to step through collections and return elements one at a time.

Performance Tips

Discusses several basic rules that might help you increase the performance of your application.

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Additional resources

Documentation

General Structure of a Program - C#

Learn about the structure of a C# program by using a skeleton program that contains all the required elements for a program.
Language strategy - A tour of C#

We keep evolving C# to meet the changing needs of developers and remain a state-of-the-art programming language. We will innovate eagerly and broadly in collaboration with C# developers
Overview - A tour of C#

New to C#? Learn the basics of the language. Start with this overview.
How to articles - C#

A collection of quick tips and short, focused code samples
Tips for Java Developers - A tour of C#

Are you new to C#, but experienced in Java? Here's a roadmap of what's familiar, and new features to learn in C#, and features in Java that aren't in C#.
Learn the fundamentals of the C# type system - C#

Learn about creating types in C#, such as tuples, records, value types, and reference types. Learn to choose between these options.

Training

Module

Write your first C# code - Training

Get started by writing code examples to learn the basics of the C# syntax.

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