assets/samples/Samples/Events/SelectionChanged/CS/LogManager.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.IO;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI.Events;
using System.Reflection;

namespace Revit.SDK.Samples.SelectionChanged.CS
{
   /// <summary>
   /// One log file will be created by this class for tracking events raised.
   /// </summary>
   public static class LogManager
   {
      // a trace listener for the output log of SelectionChanged sample
      private static TraceListener TxtListener;

      // the directory where this assembly is in.
      private static string AssemblyLocation = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);

      /// <summary>
      /// Retrieval if regression test is running now.
      /// If the ExpectedSelectionChanged.log exists in the assembly folder returns true, else returns false.
      /// </summary>
      public static bool RegressionTestNow
      {
         get
         {
            string expectedLogFile = Path.Combine(AssemblyLocation, "ExpectedSelectionChanged.log");
            if (File.Exists(expectedLogFile))
            {
               return true;
            }

            return false;
         }
      }

      /// <summary>
      /// Static constructor which creates a log file.
      /// </summary>
      static LogManager()
      {
         string logFile = Path.Combine(AssemblyLocation, "SelectionChanged.log");

         // if it already existed, delete the old log file.
         if (File.Exists(logFile))
         {
            File.Delete(logFile);
         }

         // Create SelectionChanged.log
         TxtListener = new TextWriterTraceListener(logFile);
         Trace.Listeners.Add(TxtListener);
         Trace.AutoFlush = true;
      }

      /// <summary>
      /// Finalize and close the output log.
      /// </summary>
      public static void LogFinalize()
      {
         Trace.Flush();
         TxtListener.Close();
         Trace.Close();
         Trace.Listeners.Remove(TxtListener);
      }

      

      /// <summary>
      /// Write specified message into log file.
      /// </summary>
      /// <param name="message">the message which will be written into the log file. </param>
      public static void WriteLog(string message)
      {
         Trace.WriteLine(message);
      }

      
   }
}