C# Essential Training: 1 Syntax and Object Oriented Programming

Learn about classes, structs, record, organizing C# code, variables, enums, nullable types, and more.

Introduction

• Explore the essentials
• What you should know
• CoderPad tour

1. C# in Context of .NET

• C# compiles to MSIL
• .NET runtime is responsible for running MSIL
• The base class library
• NuGet packages
• Compiling C# to a library or executable

2. Working with Classes, Structs, and Records

• Understanding classes, structs, and records
• Defining constructors
• Object initialization
• Initialize only properties
• Cloning and copying objects
• Equality comparisons
• Defining abstract classes
• Creating static classes
• Solution: Expressing equality

3. Organizing C# Code

• Using namespaces to organize code
• Referencing .NET assemblies
• Applying access modifiers
• Aliasing namespaces for clarity

4. Variables Revisited

• Declaring variables using types
• Using the var keyword
• Working with anonymous types
• Using dynamic variables
• Solution: Dynamic keyword

5. Working with Enums and Nullables

• Defining enums
• Enabling multiple enum values
• Testing enum values
• Understanding nullable types
• Using nullable types
• Working with null objects
• Understanding nullable reference types
• Working with nullable reference types
• Solution: Enum Flags

6. Using Patterns in Control Flow

• If and switch revisited
• Switch statement vs. switch expression
• Using the is expression
• Introduction to patterns
• Constant, relational, and logical patterns
• Property pattern
• Guard conditions
• Solution: Switch expression using patterns

Conclusion

• Learn more and build something