System.Text.Json is fast…
…but very strict.
Common Pain Points
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Missing getters
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Private setters
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PascalCase vs camelCase mismatch
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Ignored fields without
[JsonInclude] -
Cycles now break serialization
✔ Life-Saving Fix
Add:
options.PropertyNameCaseInsensitive = true; options.ReferenceHandler = ReferenceHandler.IgnoreCycles;
✔ Hidden Trick
For private setters:
[JsonInclude]
public string Name { get; private set; }
This is rarely mentioned but solves 90% of serializer issues.