OnlyOnceErrorHandlerException Property Apache log4net™ SDK Documentation
The exception from the first error that trigged this error handler.

Namespace: log4net.Util
Assembly: log4net (in log4net.dll) Version: 2.0.8.0-.NET 4.0
Syntax

public Exception Exception { get; }

Property Value

Type: Exception
Remarks

May be .
See Also

Reference