Select XML Data type (xml) from SQL server and then save to a XML file on local machine in C#

XmlReader XMLFile;

   XMLFile = XmlReader.Create(@"E:\coverindex1.xml", new XmlReaderSettings());
   cmd.Parameters.Add(new SqlParameter("@code_array", XMLFile));

String sql1 = "SELECT Code_Array FROM SecretCodeTable_1 WHERE Secret_Key = @secretKey";

           SqlCommand cmd = new SqlCommand(sql1, con);

            cmd.Parameters.AddWithValue("@secretKey", int.Parse(textBox1.Text));

             using (SqlDataReader reader1 = cmd.ExecuteReader())
             {
                 if (reader1.Read())
                 {
                     xdoc.LoadXml(reader1["Code_Array"]);
                     xdoc.Save(@"E:\myfile.xml");

                     }