C# JSON Workflows

Production Debug Flow

1. Capture raw payload from logs or network traces.
2. Run syntax check in JSON Validator.
3. Format for inspection with JSON Formatter.
4. Diff failing vs expected payload in JSON Diff.

Common C# Failure Patterns

• JsonException: The JSON value could not be converted.
• Numeric/string type mismatch for strict model properties.
• Missing required fields after upstream version updates.

Minimal Snippet

using System.Text.Json;

try {
  var doc = JsonDocument.Parse(raw);
} catch (JsonException ex) {
  Console.WriteLine(ex.Message);
}

Generate starter model definitions with JSON to C#, then harden with explicit validation.

FAQ

Why do null fields break my deserialization?

Check for strict nullable annotations or custom converters that reject null values.

Should I switch to Newtonsoft.Json?

System.Text.Json is fine for most cases. Use Newtonsoft.Json only if you need specific converters.