2 topics: Custom activities: C# source code for existing UiPath activities / Built-in Logging

Hi, we can logging inside our custom activities. I think the best way is to use uipath robot API with IExecutorRuntime reference:

var apiRuntime = context.GetExtension<IExecutorRuntime>();
apiRuntime.LogMessage(new LogMessage
{
   EventType = traceEventType,
   Message = "your message"
});

Here we have documentation Building Activities Project Settings.