>>861
C#素人ですけど

http://dobon.net/vb/dotnet/file/getfiles.html

ArrayList files = new ArrayList();
GetAllFiles(Directory.GetCurrentDirectory(), "moc*.cpp", ref files);
foreach(string file in files){
StreamReader sr = new StreamReader(file);
string buffer = sr.ReadToEnd();
fr.Close();
StreamWriter sw = new StreamWriter(file);
fr.Write("#include \"stdafx.h\"\r\n" + buffer);
fr.Close();
}