最后，我花了宝贵的4-5个小时后得到了这个问题的解决方案，有一个问题发生时，试图打开SQLite连接。我得到了一个异常为“无法打开数据库文件”。这个连接已经解决了使用下面的行，其中parseViaFramework需要在连接示例创建时传递如下：

using (SQLiteConnection conn = new SQLiteConnection(String.Format("Data Source={0};Version=3;", Path),true))

在MBTileHelper.cs类内部：

public byte[] GetTileStream(long x, long y, int zoom)
    {
        byte[] retval = null;
        try
        {
            //using (SQLiteConnection conn = new SQLiteConnection(String.Format("Data Source={0};Version=3;", Path)))
            using (SQLiteConnection conn = new SQLiteConnection(String.Format("Data Source={0};Version=3;", Path),true))
            {
                conn.Open(); // Here I was getting an exception.
                using (SQLiteCommand cmd = new SQLiteCommand() { Connection = conn, CommandText = String.Format("SELECT * FROM tiles WHERE tile_column = {0} and tile_row = {1} and zoom_level = {2};", x, y, zoom) })
                {
                    SQLiteDataReader reader = cmd.ExecuteReader();
                    if (reader.Read())
                    {
                        byte[] bytes = reader["tile_data"] as byte[];
                        retval = bytes;
                    }
                }
            }
        }
        catch(Exception ex)
        {
            retval = null;
        }
        return retval;
    }