XmlDataDocument コンストラクタ (DataSet)

DataSet を指定して、XmlDataDocument クラスの新しいインスタンスを初期化します。

名前空間: System.Xml
アセンブリ: System.Data (system.data.dll 内)

構文

'宣言
Public Sub New ( _
    dataset As DataSet _
)
'使用
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
)

パラメータ

• dataset
  XmlDataDocument に読み込む DataSet。

解説

XmlDataDocument は、指定した DataSet と同期されます。DataSet のデータは、XmlDataDocument を通じてすぐに使用できます。DataSet での変更は、XmlDataDocument に反映されます。XmlDataDocument での変更は、その変更が DataSet スキーマに一致していれば、DataSet に反映されます。

使用例

顧客テーブルを XmlDataDocument に読み込む例を次に示します。

この例では、SQL Server 2000 Northwind データベースを使用しています。

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

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework

サポート対象 : 2.0、1.1、1.0

参照

関連項目

XmlDataDocument クラス
XmlDataDocument メンバ
System.Xml 名前空間
SqlConnection
SqlDataAdapter