How to log from IdentityModelEventSource.Logger

To log from the IdentityModelEventSource.Logger the log level should be set at the desired verbosity, an event listener needs to be created and the event listener needs have events enabled for it

IdentityModelEventSource.Logger.LogLevel = System.Diagnostics.Tracing.EventLevel.LogAlways;
var wilsonTextLogger = new TextWriterEventListener("identitymodel.log");
wilsonTextLogger.EnableEvents(IdentityModelEventSource.Logger, System.Diagnostics.Tracing.EventLevel.Informational);