TraceListener.WriteLine Method (String)
.NET Framework 4.6 and 4.5
When overridden in a derived class, writes a message to the listener you create in the derived class, followed by a line terminator.
abstract WriteLine :
message:string -> unit
The typical line terminator you might implement is a carriage return followed by a line feed (\r\n).Notes to Inheritors
When inheriting from this class, you must implement this method. To support an indentation, call WriteIndent if NeedIndent is true. To indent the following line, you must reset NeedIndent to true.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Supported in: 3.0, 2.0, 1.0