using System.IO;
class Logger
{
static void Main()
{
// Create (and open) a new temporary file
var filename = Path.GetTempFileName();
var file = File.Open(filename, FileMode.Append);
// Write bytes to it during the programs lifetime...
file.Write(new byte[] { 1, 2, 3 }, 0, 3);
// Just before closing your program, close and delete it
file.Close();
File.Delete(filename);
}
}