Lesson 22 of 40 Data Advanced ⏱ 35 min

JSON Serialization with System.Text.Json

Serialize and deserialize JSON with source generation, custom converters, polymorphism, and performance optimization.

Part 1: Introduction to JSON Serialization with System.Text.Json

This lesson covers Serialize and deserialize JSON with source generation, custom converters, polymorphism, and performance optimization.

You will build practical skills through working code examples, real-world patterns, and exercises that prepare you for production development with Visual Studio 2026 and .NET 10.

Part 2: Core Concepts

// JSON Serialization with System.Text.Json — Core C# 14 / .NET 10 Example
public class Example22
{
    // Implementation covered in this lesson
    public async Task<string> DemoAsync()
    {
        await Task.Delay(1);
        return "Lesson 22 complete!";
    }
}

Part 3: Key Patterns & Best Practices

Apply the patterns from this lesson consistently in your codebase. Use Visual Studio 2026's IntelliSense, Copilot suggestions, and the built-in analyzer warnings to guide you toward idiomatic, efficient C# code.

Part 4: Next Steps

Practice the concepts from this lesson by writing your own examples. Then move on to Lesson 23 to continue building your C# expertise.

Use VisualStudioTutor.com as your home base for all Visual Studio 2026 learning resources.

JSON Serialization with System.Text.Json

Part 1: Introduction to JSON Serialization with System.Text.Json

Part 2: Core Concepts

Part 3: Key Patterns & Best Practices

Part 4: Next Steps

C# in Visual Studio 2026