如何在服务器错误消息后从数据集中获取数据？

Question

DBCC PAGE命令能够通过数据库或日志文件（如

）中的页面读取数据

DBCC TRACEON(3604)
DBCC PAGE('TESTDB',2,0,2) WITH TABLERESULTS

但是它经常包含服务器错误或警告。 SSMS能够正确显示它，有“结果”和“消息”选项卡。我正试图用C＃

获得结果

var conn = new SqlConnection("Data Source=PCNAME;Initial Catalog=TESTDB;User ID=user;Password=password");
SqlCommand cmdPageNo = new SqlCommand();
SqlDataReader readerPageNo, readerPage = null;

cmdPageNo.CommandText = "SELECT fileid, size FROM sysfiles where name = 'TESTDB_log'";
cmdPageNo.CommandType = CommandType.Text;
cmdPageNo.Connection = conn;

conn.Open();

readerPageNo = cmdPageNo.ExecuteReader();
if (readerPageNo.Read()) {
    int id = Convert.ToInt32(readerPageNo.GetValue(0));
    int pageCnt = Convert.ToInt32(readerPageNo.GetValue(1));
    readerPageNo.Close();

    SqlCommand cmdNQ = new SqlCommand("DBCC TRACEON(3604)", conn);
    cmdNQ.ExecuteNonQuery();

    SqlCommand cmdPage = new SqlCommand("DBCC PAGE('TESTDB', @fileid, @pageno, 2) WITH TABLERESULTS", conn);

    SqlParameter param1 = new SqlParameter();
    param1.ParameterName = "@fileid";
    param1.Value = id;
    cmdPage.Parameters.Add(param1);

    SqlParameter param2 = new SqlParameter();
    param2.ParameterName = "@pageno";
    cmdPage.Parameters.Add(param2);

    for (int i = 0; i < pageCnt; i++)
    {
        try
        {
            param2.Value = i;
            try
            {
                readerPage = cmdPage.ExecuteReader();
            }
            catch
            {
                // there are always errors and warnings
            }
        }
        finally
        {
            if (readerPage != null)
            {
                string temp = readerPage.GetString(0);
            }
        }

    }
}

但readerPage部分中的错误finally为空后。我检查了SQL Server发送的数据包：在几条消息（有些消息导致异常的SeverityClass 16）之后，有字段定义和值。问题是如何忽略服务器错误消息引起的错误并从SSMS等数据集中获取数据？