にバインド: (Contacts.xml)LINQ&Iは次のようにXMLからデータを読んでいGridViewの
<?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>
XMLファイルからデータを取得するための私のコード: (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;
}
}
}
そして、私は何とかGridViewのにバインドする: (default.aspxを)
<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>
どのようにバインドするか考えてください。Contact.PhoneNumber.number + " - " Contact.PhoneNumber.numberType to colomn?
すなわち:774-6655-252 - mobile
感謝。
私はそれを実行すると、それはエラーを私に示しています
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.