XmlDataDocument-Konstruktor (DataSet)

Initialisiert eine neue Instanz der XmlDataDocument-Klasse mit dem angegebenen DataSet.

Namespace: System.Xml
Assembly: System.Data (in system.data.dll)

Syntax

'Declaration
Public Sub New ( _
    dataset As DataSet _
)
'Usage
Dim dataset As DataSet

Dim instance As New XmlDataDocument(dataset)

public XmlDataDocument (
    DataSet dataset
)

public:
XmlDataDocument (
    DataSet^ dataset
)

public XmlDataDocument (
    DataSet dataset
)

public function XmlDataDocument (
    dataset : DataSet
)

Parameter

• dataset
  Das DataSet, das in das XmlDataDocument geladen werden soll.

Hinweise

Ein XmlDataDocument wird mit dem angegebenen DataSet synchronisiert. Alle Daten im DataSet sind sofort über das XmlDataDocument verfügbar. Sämtliche Änderungen im DataSet werden im XmlDataDocument übernommen. Alle am XmlDataDocument vorgenommenen Änderungen werden im DataSet übernommen, sofern sie mit dem DataSet-Schema übereinstimmen.

Beispiel

Im folgenden Beispiel wird eine Kundentabelle in ein XmlDataDocument geladen.

Im Beispiel wird die SQL Server 2000-Datenbank Northwind verwendet.

Imports System
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)  
 
    'Display the XmlDataDocument.
    doc.Save(Console.Out)
 
  end sub
end class

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);   

     //Display the XmlDataDocument.
     doc.Save(Console.Out);
    
  }
}

#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 );
   
   //Display the XmlDataDocument.
   doc->Save( Console::Out );
}

import System.*;
import System.Data.*;
import System.Xml.*;
import System.Data.SqlClient.*;

public class Sample
{
    public static void main(String[] args)
    {
        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);

        //Display the XmlDataDocument.
        doc.Save(Console.get_Out());
    } //main
} //Sample

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

XmlDataDocument-Klasse
XmlDataDocument-Member
System.Xml-Namespace
SqlConnection
SqlDataAdapter