LINQ to XML & binden an Gridview

Question

Ich lese Daten aus XML wie folgt aus: (Contacts.xml)

<?xml version="1.0" encoding="utf-8" standalone="yes"?> 
    <!--LINQ to XML Contacts XML Example--> 
    <?MyApp 123-44-4444?> 
    <contacts> 
     <contact> 
     <name>Patrick Hines</name> 
     <phone type="home">206-555-0144</phone> 
     <phone type="work">425-555-0145</phone> 
     <address> 
      <street1>123 Main St</street1> 
      <city>Mercer Island</city> 
      <state>WA</state> 
      <postal>68042</postal> 
     </address> 
     </contact> 
     <contact> 
     <name>Gretchen Rivas</name> 
     <phone type="mobile">206-555-0163</phone> 
     <address> 
      <street1>123 Main St</street1> 
      <city>Mercer Island</city> 
      <state>WA</state> 
      <postal>68042</postal> 
     </address> 
     </contact> 
    </contacts> 

für My Codedaten aus XML-Datei bekommen: (contacts.cs)

public class Contact 
    { 
//static members 
public static string fLocation; 

//private members 
private string name; 
private List<PhoneNumber> pNumber; 
private Adress cAdress; 

//public members 
public Adress CAdress 
{ 
    get { return cAdress; } 
} 
public List<PhoneNumber> PNumber 
{ 
    get { return pNumber; } 
} 
public string Name 
{ 
    get { return name; } 
} 

//Constructor 
public Contact(string _name, List<PhoneNumber> _pNumber,Adress _cAdress) 
{ 
    name = _name; 
    pNumber = _pNumber; 
    cAdress = _cAdress; 
} 

public static List<Contact> Get() 
{ 
    List<Contact> output = new List<Contact>(); 

    XDocument data = XDocument.Load(fLocation); 

    var query = from c in data.Descendants("contact") 
       orderby c.Element("name").Value 
       select c; 

    foreach (var item in query) 
    { 
     List<PhoneNumber> pNumber = new List<PhoneNumber>(); 

     foreach (var PhoneNumbers in item.Elements("phone")) 
     { 
      pNumber.Add(new PhoneNumber(PhoneNumbers.Value,PhoneNumbers.Attribute("type").Value)); 
     } 

     Adress cAdress = new Adress(item.Element("address").Element("street1").Value, 
      item.Element("address").Element("city").Value, 
      item.Element("address").Element("state").Value, 
      item.Element("address").Element("postal").Value); 

     output.Add(new Contact(item.Element("name").Value,pNumber,cAdress)); 
    } 

    return output; 
} 

//subclasses 
public class Adress 
{ 
    private string street; 
    private string city; 
    private string state; 
    private string postal; 

    public string Postal 
    { 
     get { return postal; } 
    }   
    public string State 
    { 
     get { return state; } 
    } 
    public string City 
    { 
     get { return city; } 
    } 
    public string Street 
    { 
     get { return street; } 
    } 


    public Adress(string _street,string _city, string _state, string _postal) 
    { 
     street = _street; 
     city = _city; 
     state = _state; 
     postal = _postal; 
    } 
} 

public class PhoneNumber 
{ 
    private string number; 
    private string numberType; 


    public string NumberType 
    { 
     get { return numberType; } 
    } 
    public string Number 
    { 
     get { return number; } 
    } 


    public PhoneNumber(string _number, string _phoneNumberType) 
    { 
     number = _number; 
     numberType = _phoneNumberType; 
    } 
} 

}

Und ich will irgendwie binden Gridview: (default.aspx)

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
     DataSourceID="ObjectDataSource1"> 
     <Columns> 
      <asp:BoundField DataField="Name" HeaderText="Name" ReadOnly="True" 
       SortExpression="Name" /> 
      <asp:DynamicField DataField="CAdress" HeaderText="CAdress" /> 
      <asp:DynamicField DataField="PNumber" HeaderText="PNumber" /> 
     </Columns> 
    </asp:GridView> 
    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="Get" 
     TypeName="LINQtoXML_WebForms.Contact"></asp:ObjectDataSource> 

Irgendwelche Ideen zum Binden zum Beispiel Contact.PhoneNumber.number + "-" Contact.PhoneNumber.numberType to colomn?

d.h .: 774-6655-252 - mobile

Dank.

Wenn ich es laufen, es zeigt mir eine Fehlermeldung:

Could not determine a MetaTable. A MetaTable could not be determined for the data source 'ObjectDataSource1' and one could not be inferred from the request URL. Make sure that the table is mapped to the dats source, or that the data source is configured with a valid context type and table name, or that the request is part of a registered DynamicDataRoute.

Answer 1

Ich glaube, Sie entweder Meta-Informationen zu Ihrer Klasse hinzuzufügen oder den Ansatz verwende ich verwenden würde - schreiben eine Methode, sich statt mit objectdatasource Objekt.

Zum Beispiel Linq to XML

public List<Contact> GetContacts() 
{ 
    XDocument doc = XDocument.Load("path_to_some_file.xml"); 

    var contacts = from o in doc.Descendants("contact") 
        select new Contact() 
        { 
         Name = (string)o.Element("Name"), 
         Phone = (string)o.Element("Phone") 
        }; 

    return contacts.ToList(); 
} 

und dann binden Sie es einfach in Code-behind zu Ihrer Kontrolle:

GridView1.DataSource = GetContacts(); 
GridView1.DataBind(); 

Hoffe, Sie bekommen die Idee.