System.Data Namespace   DataSet Class

Writes the current data for a DataSet using the specified Stream.

[ VB ]
Overloads Public Sub WriteXml ( _
   ByVal stream As Stream _
)

[ C# ]
public void WriteXml (
   Stream stream
);

[ C++ ]
public: void WriteXml (
   Stream* stream
);

[ JScript ]
public function WriteXml (
   stream : Stream
);

stream

A Stream object used to write to a file.

The WriteXml method provides a way to write either data only, or both data and schema from a DataSet into an XML document, whereas the WriteXmlSchema method writes only the schema. To write both data and schema, use one of the overloads that includes the XmlWriteMode parameter, and set its value to WriteSchema.

Note that the same is true for the ReadXml and ReadXmlSchema methods, respectively. To read XML data, or both schema and data into the DataSet, use the ReadXml method. To read just the schema, use the ReadXmlSchema method.

The following example initializes a System.IO.FileStream object, that is then used with the WriteXml method to write an XML document.

private void WriteXmlToFile ( DataSet thisDataSet ) {
   if ( thisDataSet == null ) {
      return;
   }
   // create a file name to write to.
   string filename = "myXmlDoc.xml";
   // create the FileStream to write with.
   System.IO.FileStream myFileStream = new System.IO.FileStream
      ( filename, System.IO.FileMode.Create );
   // Write to the file with the WriteXml method.
   thisDataSet.WriteXml ( myFileStream );   
}

Private Sub WriteXmlToFile ( thisDataSet As DataSet )
   If thisDataSet Is Nothing Then
      Return
   End If
   ' Create a file name to write to.
   Dim filename As String = "myXmlDoc.xml"
   ' Create the FileStream to write with.
   Dim myFileStream As New System.IO.FileStream _
      ( filename, System.IO.FileMode.Create )
   ' write to the file with the WriteXml method.
   thisDataSet.WriteXml ( myFileStream )
End Sub

DataSet Members   DataSet.WriteXml Overload List   WriteXmlSchema   ReadXml   ReadXmlSchema