private static bool Rename(string oldName, string newName) {
var old = Path.Combine(ApplicationDataDirectory, oldName);
if (!Directory.Exists(old)) return false;
var renamed = Path.Combine(ApplicationDataDirectory, newName);
if (!Directory.Exists(renamed)) {
try {
Directory.Move(old, renamed);
} catch (Exception) {
// ignored
}
return true;
}
return false;
}