System.Text.Json — .NET 11

New APIs added to System.Text.Json across .NET 11 releases.

When to Use

• Serializing or deserializing JSON in a .NET 11 (or later) project
• Needing strongly-typed JsonTypeInfo<T> access instead of the untyped JsonTypeInfo overload
• Wanting to safely check whether type metadata is available without catching exceptions (TryGetTypeInfo<T>)
• Requiring PascalCase property naming during JSON serialization

When Not to Use

• The project targets .NET 10 or earlier — these APIs are not available before .NET 11
• Using a JSON library that is not System.Text.Json (e.g., Newtonsoft.Json)
• The existing untyped GetTypeInfo(Type) / TryGetTypeInfo(Type, ...) overloads are sufficient

Target Framework