/// <summary>
/// Adds the given file to the trash for later clean-up.
/// </summary>
/// <param name="path">absolute path of file</param>
/// <param name="pkgmgr">package manager reference</param>
public static void AddFile(string path, IPackageManager pkgmgr)
{
string newpath = null;
if (File.Exists(path)) {
newpath = Path.GetDirectoryName(path) + @"\" + Guid.NewGuid().ToString();
File.Move(path, newpath);
File.SetAttributes(newpath, FileAttributes.Hidden);
} else if (Directory.Exists(path)) {
newpath = path;
} else
return;
pkgmgr.TrashFile(newpath);
}