重构这个嵌套在try/catch中的嵌套IF函数

我很想去:

    private static bool CanMoveToSafeFolder(string filename)
    {
        return IsValidFileFormat(filename)
            && GetFolderIDFromFilename(filename) > 0
            && HasNoViruses(filename)
            && VerifyFileSize(filename);
    }

    public static void HandleUploadedFile(string filename)
    {

        try
        {

            if (CanMoveToSafeFolder(filename))
            {
                // file is OK
                MoveToSafeFolder(filename);
            }
            else
            {
                DeleteFile(filename);
            }
        }
        catch (Exception ex)
        {

        }
        finally
        {
            // do some things
        }

    }