XmlDataDocument.GetElementFromRow(DataRow) Metodo

Definizione

Spazio dei nomi:

System.Xml

Assembly:

System.Data.Common.dll

Source:

XmlDataDocument.cs

Recupera l'oggetto XmlElement associato all'oggetto DataRow specificato.

public:
 System::Xml::XmlElement ^ GetElementFromRow(System::Data::DataRow ^ r);

public System.Xml.XmlElement GetElementFromRow (System.Data.DataRow r);

member this.GetElementFromRow : System.Data.DataRow -> System.Xml.XmlElement

Public Function GetElementFromRow (r As DataRow) As XmlElement

Parametri

r

DataRow

Oggetto DataRow di cui si desidera recuperare l'elemento XmlElement associato.

Restituisce

XmlElement

XmlElement contenente una rappresentazione del DataRow specificato.

Esempio

Nell'esempio seguente viene caricato un DataSet oggetto in un oggetto XmlDataDocument e quindi viene creato un oggetto XmlElement che rappresenta il primo record del cliente.

Nell'esempio viene usato il database northwind SQL Server 2000.

#using <System.Xml.dll>
#using <System.Transactions.dll>
#using <System.EnterpriseServices.dll>
#using <System.dll>
#using <System.Data.dll>

using namespace System;
using namespace System::Data;
using namespace System::Xml;
using namespace System::Data::SqlClient;

int main()
{
   DataSet^ dsNorthwind = gcnew DataSet;
   
   //Create the connection string           
   String^ sConnect;
   sConnect = "Data Source=localhost;Integrated Security=SSPI;Initial Catalog=Northwind";
   
   //Create a connection object to connect to the northwind db.
   SqlConnection^ nwconnect = gcnew SqlConnection( sConnect );
   
   //Create a command string to select all the customers in the WA region.
   String^ sCommand = "Select * from Customers where Region='WA'";
   
   //Create an adapter to load the DataSet.
   SqlDataAdapter^ myDataAdapter = gcnew SqlDataAdapter( sCommand,nwconnect );
   
   //Fill the DataSet with the selected records.
   myDataAdapter->Fill( dsNorthwind, "Customers" );
   
   //Load the document with the DataSet.
   XmlDataDocument^ doc = gcnew XmlDataDocument( dsNorthwind );
   
   //Create an element representing the first customer record.
   DataRow^ row = doc->DataSet->Tables[ 0 ]->Rows[ 0 ];
   XmlElement^ elem = doc->GetElementFromRow( row );
   Console::WriteLine( elem->OuterXml );
}

using System;
using System.Data;
using System.Xml;
using System.Data.SqlClient;

public class Sample
{
  public static void Main()
  {
     DataSet dsNorthwind = new DataSet();

     //Create the connection string
     String sConnect;
     sConnect="Data Source=localhost;Integrated Security=SSPI;Initial Catalog=Northwind";

     //Create a connection object to connect to the northwind db.
     SqlConnection nwconnect = new SqlConnection(sConnect);

     //Create a command string to select all the customers in the WA region.
     String sCommand = "Select * from Customers where Region='WA'";

     //Create an adapter to load the DataSet.
     SqlDataAdapter myDataAdapter = new SqlDataAdapter(sCommand, nwconnect);

     //Fill the DataSet with the selected records.
     myDataAdapter.Fill(dsNorthwind,"Customers");

     //Load the document with the DataSet.
     XmlDataDocument doc = new XmlDataDocument(dsNorthwind);

     //Create an element representing the first customer record.
     DataRow row = doc.DataSet.Tables[0].Rows[0];
     XmlElement elem = doc.GetElementFromRow(row);
     Console.WriteLine(elem.OuterXml);
  }
}

Imports System.Xml
Imports System.Data
Imports System.Data.SqlClient
 
public class Sample
 
  public shared sub Main()
   
    Dim dsNorthwind as DataSet = new DataSet()
 
    'Create the connection string.
    Dim sConnect as String           
    sConnect="Data Source=localhost;Integrated Security=SSPI;Initial Catalog=Northwind"     
          
    'Create a connection object to connect to the northwind db.
    Dim nwconnect as SqlConnection
    nwconnect = new SqlConnection(sConnect)
 
    'Create a command string to select all the customers in the WA region.
    Dim sCommand as String = "Select * from Customers where Region='WA'"
 
    'Create an Adapter to load the DataSet.
    Dim myDataAdapter as SqlDataAdapter
    myDataAdapter = new SqlDataAdapter(sCommand, nwconnect)
 
    'Fill the DataSet with the selected records.
    myDataAdapter.Fill(dsNorthwind, "Customers")
 
    'Load the document with the DataSet.
    Dim doc as XmlDataDocument = new XmlDataDocument(dsNorthwind)  
 
    'Create an element representing the first customer record.
    Dim row as DataRow = doc.DataSet.Tables.Item(0).Rows.Item(0)
    Dim elem as XmlElement = doc.GetElementFromRow(row)
    Console.WriteLine(elem.OuterXml)
 
  end sub
end class

Vedi anche

• DataSet
• DataTable