[C#] Logfile erstellen

using System.IO;

// neue Daten werden angehangen (append)
using (StreamWriter swLogFile = new StreamWriter(@"c:\mylogfile.log", true, Encoding.UTF8))
{
    swLogFile.WriteLine("Neuer Eintrag ins Logbuch.");
    swLogFile.Flush();
    swLogFile.Close();
}