'How to configure Serilog's ContainsKey-Filter in a external JSON config file?

How can I configure the filter lc.Filter.ByIncludingOnly(lc => lc.Properties.ContainsKey("log_gp") in a external applicationsettings.json file? I tried

  "Filter": [
    {
      "Name": "ByIncludingOnly",
      "Args": {
        "expression": "Contains(Properties, 'log_gp')"
      }
    }
  ]

but no success. Thanks

serilog

Solution 1:^[1]

dotnet add package serilog.expressions

then:

  "Using": ["Serilog.Expressions"],
  "Filter": [
    {
      "Name": "ByIncludingOnly",
      "Args": {
        "expression": "IsDefined(log_gp)"
      }
    }
  ]

Sources

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Solution	Source
Solution 1	Nicholas Blumhardt

'How to configure Serilog's ContainsKey-Filter in a external JSON config file?

Solution 1:[1]

Sources

Related Questions

Solution 1:^[1]