Configuration using appsettings.json

[rs-maja]

Is there a way to configure RichTextBox logging using ReadFrom.Configuration extension? I don't get it to work, because of the required richTextBoxControl parameter. I need to set this control explicitely in code, and then parameters in appsettings file are overriden.

LoggerConfiguration loggerConfiguration = new LoggerConfiguration()
                    .ReadFrom.Configuration(configuration: Configuration, "Serilog")
                    .WriteTo.RichTextBox(
                        richTextBoxControl: eventLogV.Log,
                        outputTemplate: rtbOutputTemplate,
                        restrictedToMinimumLevel: rtbRestrictedMinimumLevel)
                    .Enrich.FromLogContext();

I would like to skip the WriteTo.RichTextBox(...) part above, since I need to manually read out outputTemplate and restrictedToMinimumLevel values from appsettings.json.

[augustoproiete]

No, it's no possible to use the ReadFrom.Configuration. The sink requires a reference to an existing RichTextBox control that it can write to, so the configuration must be done via code.

That said, you can store some parameters like output template and minimum level in a custom section inside of your config file, and then read those values yourself.

e.g.

{
    "serilogRichTextBox": {
        "outputTemplate": "[{Timestamp:HH:mm:ss} {SourceContext} [{Level}] {Message}{NewLine}{Exception}",
        "minimumLevel": "Information"
    }
}

var serilogRichTextBoxConfig = configuration.GetSection("serilogRichTextBox");
var rtbOutputTemplate = serilogRichTextBoxConfig.GetValue<string>("outputTemplate");
var rtbRestrictedMinimumLevel = serilogRichTextBoxConfig.GetValue<LogEventLevel>("minimumLevel");

LoggerConfiguration loggerConfiguration = new LoggerConfiguration()
    .WriteTo.RichTextBox(
        richTextBoxControl: eventLogV.Log,
        outputTemplate: rtbOutputTemplate,
        restrictedToMinimumLevel: rtbRestrictedMinimumLevel)
    .Enrich.FromLogContext();

// ...