// compile with: csc /r:..\logdriver.dll /target:library logaddintofile.cs using System; using System.Collections; using System.IO; public class LogAddInToFile { StreamWriter streamWriter; public LogAddInToFile() { streamWriter = File.CreateText(@"logger.log"); streamWriter.AutoFlush = true; } public void Log(string message) { streamWriter.WriteLine(message); } }