Is there a way to "debug a Json file" at deserialisation using JsonConvert?
It would be very useful if the line (or group of lines) of the Json file being processed could be printed as a debug option.
Otherwise, when the deserialisation of a Json file into an object fails, it can be very difficult to figure out what is wrong with that file.
You can implement a custom TraceWriter that logs to console as deserialization goes on, like this. Of course you could also wrap it into a log4net log entry or just do whatever you like.:
public class ConsoleTraceWriter : ITraceWriter
{
public TraceLevel LevelFilter
{
// trace all messages
get { return TraceLevel.Verbose; }
}
public void Trace(TraceLevel level, string message, Exception ex)
{
if (ex != null) {
Console.WriteLine(level.ToString() + ": " + message + " Ex: " + ex.Message);
} else {
Console.WriteLine(level.ToString() + ": " + message);
}
}
}
And set it at deserialization
JsonConvert.DeserializeObject(myJson, new JsonSerializerSettings { TraceWriter = new ConsoleTraceWriter() });