Add customized JSON Formmter in appsettings.json

Question

I created a customized JSON Formatter which extends ITextFormatter And try to add it to appsetting.json like this:

"WriteTo": [
 {
    "Name": "Console",
    "Args": {
        "formatter": "CustomizedJSONFormatter"
       // "formatter": "Serilog.Formatting.Json.JsonFormatter, Serilog"
    }
  } 
]

The default jsonFormatter works fine as shown in the commented line. But I will get an error if I want to add the customized one: InvalidCastException: Invalid cast from 'System.String' to 'Serilog.Formatting.ITextFormatter'.

Is there anyway to solve this?

Thanks!

Answer 1

As suggested by @SLaks, the assembly-qualified type name is required:

MyNamespace.CustomizedJsonFormatter, MyAssembly

Answer 2

It needs to be used like below:

"WriteTo": [
 {
    "Name": "Console",
    "Args": {
       "customFormatter": "Serilog.Formatting.Elasticsearch.ElasticsearchJsonFormatter,Serilog.Formatting.Elasticsearch"
    }
  } 
]