DiagnosticsTraceWriter
Represents a trace writer that writes to the application's  TraceListener instances.
            
                
Gets the  TraceLevel that will be used to filter the trace messages passed to the writer.
            For example a filter level of  Info will exclude  Verbose messages and include  Info,
             Warning and  Error messages.
            
public DiagnosticsTraceWriter()
Writes the specified trace level, message and optional exception.