Create XML file from database table

cmdText = "SELECT * from tbl_nation for XML RAW , ROOT ('table'), ELEMENTS XSINIL";

string tempFilePath = "c:\\temptable.xml";

TextWriter textWrite = new StreamWriter(tempFilePath);

SqlCommand command = new SqlCommand(cmdText, connection);

SqlDataReader sqlReader= command.ExecuteReader();

if (sqlReader != null)
{
       while (sqlReader.Read())
      {
           textWrite.Write(sqlReader.GetValue(0).ToString());
      }
sqlReader.Close();
textWrite.Close();
}