Nlog: [Question] : How to Ignore a property?

[HesamKashefi]

Hi,
When using structured logging like :
_logger.Log('Data: {@data}', data);
This logs every property of data with extremely high depth, so I want to ignore a property from being serialized by attribute or something or limit the Max Depth of logger.
I tried [JsonIgnore] and [IgnoreDataMember] and excludeProperties on Target but they didn't work.

[snakefoot]

Sounds like a good idea to support IgnoreDataMember-attribute for properties. PR are welcome.

You can inject your own IJsonConverter at NLog.Config.ConfigurationItemFactory.Default.JsonConverter and do special handling for your special object:

See also: https://github.com/NLog/NLog/wiki/How-to-use-structured-logging#i-like-to-use-jsonnet-for-creating-json

This way you can inject your own special converter that handles wanted types, or else just forwards the call to the defaultConverter:

var defaultConverter = NLog.Config.ConfigurationItemFactory.Default.JsonConverter;
var newConverter = new MyConverter(defaultConverter);
NLog.Config.ConfigurationItemFactory.Default.JsonConverter = newConverter;

[304NotModified]

Another quick option is to:

• Write the ToString on your type and do a data.ToString()
• Convert the instance before logging

[304NotModified]

I assume your question has been answered, if not, please let us know!

[jordanhammond]

What about doing this when using DI such as Autofac?

[snakefoot]

NLog 5.0 will make it easier to override the IJsonConverter by hooking up a dependency-injection-container. See also: #3666

NLog 4.7 will includes #3610 that will allow one to transform objects into anonymous-objects with only the wanted properties.