// save the course after first saving the current files to the undo directory
public void Save()
{
saveBackup();
string file = directory + "/" + filename;
serialize(file);
serializeControl();
hash.HashCode = HashStat.ReadHash(file);
hash.Serialize(hashfile);
}
// copy the current files to the undo directory
private void saveBackup()
{
FileInfo fi = new FileInfo(directory + "/" + filename);
if (fi.Exists)
{
UnDoCtr++;
UnDoPos = 1 + UnDoCtr; // reset after save
(new DirectoryInfo(directory + @"\" + undodir)).Create();
string file = undoName(UnDoCtr);
fi.CopyTo(file);
control.Serialize(undoName(UnDoCtr, controlname));
hash.HashCode = HashStat.ReadHash(file);
hash.Serialize(undoName(UnDoCtr, hashname));
}
}
