How to write string array from SQLite database to xml format string?

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C++/CLI

//connect with database
m_pcDBManager = new CSDBManagerIf("DBManager", GetLog());

if(m_pcDBManager->IsValid())
{
  if(((*m_pcDBManager)->OpenSQLiteDBconn("C:\\File1"))== S_OK)
  {
    (*m_pcDBManager)->SQLiteSelectCondition1("Data", 1, &nRow, &values, "Field1='abc'" ,"Field1");
  }
}

In the above code I am able to receive the values from database File 'File1' of table 'Data' in '&values'. I want to convert the string array into xml string format without writing it into any XML file.
Please guide me with the code,how to proceed further.