SqlDataReader ne pas produire le document XML

Question

Je suis en train de créer dynamiquement un XML pour un webservice mais quand je teste le service que je reçois l'erreur suivante

XML Erreur d'analyse: aucun élément trouvé Lieu: http://stuiis.cms.gre.ac.uk/dd615/aspweb/WatCoursework/Service.asmx/getMusicdetailsSql ligne numéro 1, colonne 39: --------------------------------------^

// Make a new XML document in memory. 
     XmlDocument doc = new XmlDocument(); 

     // Fill this document with a root element 
     // named <Inventory>. 
     XmlElement musicInformation = doc.CreateElement("musicInformation"); 

     using (SqlDataReader oDr = myCommand.ExecuteReader()) 
     { 
      while (oDr.Read()) 
      { 
       // Now, make a sub element named <Car> with 
       // an ID attribute. 
       XmlElement musicdetails = doc.CreateElement("musicdetails"); 
       musicdetails.SetAttribute("m_id", oDr["m_id"].ToString()); 

       // Build the data within the <Car> element. 
       XmlElement p_id = doc.CreateElement("p_id"); 
       p_id.InnerText = oDr["p_id"].ToString(); 

       XmlElement artistname = doc.CreateElement("artistname"); 
       artistname.InnerText = oDr["artistname"].ToString(); 

       XmlElement recordname = doc.CreateElement("recordname"); 
       recordname.InnerText = oDr["recordname"].ToString(); 

       XmlElement recordtype = doc.CreateElement("recordtype"); 
       recordtype.InnerText = oDr["recordtype"].ToString(); 

       XmlElement format = doc.CreateElement("format"); 
       format.InnerText = oDr["format"].ToString(); 

       XmlElement price = doc.CreateElement("price"); 
       price.InnerText = oDr["price"].ToString(); 


       musicdetails.AppendChild(p_id); 
       musicdetails.AppendChild(artistname); 
       musicdetails.AppendChild(recordname); 
       musicdetails.AppendChild(recordtype); 
       musicdetails.AppendChild(format); 
       musicdetails.AppendChild(price); 

       musicInformation.AppendChild(musicdetails); 
      } 
      return doc; 
     } 

Answer 1

Je pense que vous avez oublié d'ajouter le musicInformation au document:

 } 
     doc.AppendChild(musicInformation); 
     return doc; 
    }