XmlDataDocument Constructors

Definition

Namespace:

System.Xml

Assembly:

System.Data.Common.dll

Initializes a new instance of the XmlDataDocument class.

Overloads

XmlDataDocument()	Initializes a new instance of the XmlDataDocument class.
XmlDataDocument(DataSet)	Initializes a new instance of the XmlDataDocument class with the specified DataSet.

XmlDataDocument()

Source:

XmlDataDocument.cs

Initializes a new instance of the XmlDataDocument class.

public:
 XmlDataDocument();

public XmlDataDocument ();

Public Sub New ()

Remarks

An empty DataSet is created and associated with the XmlDataDocument.

XmlDataDocument(DataSet)

Source:

XmlDataDocument.cs

Initializes a new instance of the XmlDataDocument class with the specified DataSet.

public:
 XmlDataDocument(System::Data::DataSet ^ dataset);

public XmlDataDocument (System.Data.DataSet dataset);

new System.Xml.XmlDataDocument : System.Data.DataSet -> System.Xml.XmlDataDocument

Public Sub New (dataset As DataSet)

Parameters

dataset

DataSet

The DataSet to load into XmlDataDocument.

Examples

The following example loads a customer table into an XmlDataDocument.

The example uses the SQL Server 2000 Northwind database.

#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 );
}

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);
  }
}

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

Remarks

The XmlDataDocument is synchronized with the specified DataSet. Any data in the DataSet is immediately available through the XmlDataDocument. Any changes in the DataSet are propagated in the XmlDataDocument. Any changes made in the XmlDataDocument, provided they match the DataSet schema, are propagated in the DataSet.

See also

• SqlConnection
• SqlDataAdapter