比如key有dog1,dog2,dog3分别对应3行数据，根据dog查询所有以dog开头的key的行数据，怎么写？

hbase是0.98.6,thfrit是0.9或0.7，

下面是我写的代码，没成功，不知道是代码错误还是其他问题：

#region 前缀查询
                TScan scan = new TScan();
                scan.FilterString = Encoding.UTF8.GetBytes("983b45411c6b062d");
                int scanner = client.scannerOpenWithScan(Encoding.UTF8.GetBytes("TW20160720"), scan, null);
                List<TRowResult> scanResult = client.scannerGet(scanner);
                foreach (var key in result)
                {
                    Console.WriteLine("RowKey:\n{0}", Encoding.UTF8.GetString(key.Row));
                    foreach (var k in key.Columns)
                    {
                        Console.WriteLine("Family:cf:\n" + Encoding.UTF8.GetString(k.Key));
                        Console.WriteLine("Value:" + Encoding.UTF8.GetString(k.Value.Value));
                    }
                }
                #endregion