<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.Diagnostics.TraceSource

public class TraceSource
namespace System.Diagnostics { public class TraceSource { public StringDictionary Attributes { get; } public TraceListenerCollection Listeners { get; } public string Name { get; } public SourceSwitch Switch { get; set; } public TraceSource(string name); public TraceSource(string name, SourceLevels defaultLevel); public void Close(); public void Flush(); protected virtual string[] GetSupportedAttributes(); public void TraceData(TraceEventType eventType, int id, object data); public void TraceData(TraceEventType eventType, int id, params object[] data); public void TraceEvent(TraceEventType eventType, int id); public void TraceEvent(TraceEventType eventType, int id, string message); public void TraceEvent(TraceEventType eventType, int id, string format, params object[] args); public void TraceInformation(string message); public void TraceInformation(string format, params object[] args); public void TraceTransfer(int id, string message, Guid relatedActivityId); } }