Trace Switch and Trace Listeners - CSharp Operating System

CSharp examples for Operating System:Diagnostics

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Description

Trace Switch and Trace Listeners

Demo Code

using System.Diagnostics;
using System.IO;/*from  ww  w  . ja  v  a  2  s . co m*/
class Program
{
   static void Main(string[] args)
   {
      Trace.Listeners.Add(new TextWriterTraceListener(File.CreateText("log.txt")));
      // text writer is buffered, so this option calls
      // Flush() on all listeners after writing to them
      Trace.AutoFlush = true;
      Debug.WriteLine("Debug says, I am watching!");
      Trace.WriteLine("Trace says, I am watching!");
      var ts = new TraceSwitch("PacktSwitch", "This switch is set via a command line argument.");
      if (args.Length > 0)
      {
         if (System.Enum.TryParse<TraceLevel>(args[0],
            ignoreCase: true, result: out TraceLevel level))
         {
            ts.Level = level;
         }
      }
      Trace.WriteLineIf(ts.TraceError, "Trace error");
      Trace.WriteLineIf(ts.TraceWarning, "Trace warning");
      Trace.WriteLineIf(ts.TraceInfo, "Trace information");
      Trace.WriteLineIf(ts.TraceVerbose, "Trace verbose");
   }
}

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