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XmlSerializer.Serialize Method (XmlWriter, Object, XmlSerializerNamespaces)

Serializes the specified Object and writes the XML document to a file using the specified XmlWriter and references the specified namespaces.

Namespace:  System.Xml.Serialization
Assembly:  System.Xml (in System.Xml.dll)

'Declaration
Public Sub Serialize ( _
	xmlWriter As XmlWriter, _
	o As Object, _
	namespaces As XmlSerializerNamespaces _
)

Parameters

xmlWriter
Type: System.Xml.XmlWriter
The XmlWriter used to write the XML document.
o
Type: System.Object
The Object to serialize.
namespaces
Type: System.Xml.Serialization.XmlSerializerNamespaces
The XmlSerializerNamespaces referenced by the object.

ExceptionCondition
InvalidOperationException

An error occurred during serialization. The original exception is available using the InnerException property.

When the Serialize method is invoked, the public fields and read/write properties of an object are converted into XML. Methods, indexers, private fields, and read-only properties are not serialized. To serialize all fields and properties, both public and private, use the BinaryFormatter.

Use the xmlWriter parameter to specify an object that derives from the abstract XmlWriter class, which is designed to write XML documents. The XmlTextWriter derives from the XmlWriter.

NoteNote

The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List(Of T).

The following example serializes an object with an XmlWriter. The example also creates an XmlSerializerNamespaces and adds two namespaces to the object. Several instances of the XmlElementAttribute class are applied to the class members to specify the namespace for each element.


Imports System
Imports System.IO
Imports System.Text
Imports System.Xml
Imports System.Xml.Serialization


' This is the class that will be serialized.
Public Class OrderedItem
    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public ItemName As String

    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Description As String

    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public UnitPrice As Decimal

    <XmlElement(Namespace := "http://www.cpandl.com")> _
    Public Quantity As Integer

    <XmlElement(Namespace := "http://www.cohowinery.com")> _
    Public LineTotal As Decimal

    'A custom method used to calculate price per item.
    Public Sub Calculate()
        LineTotal = UnitPrice * Quantity
    End Sub
End Class


Public Class Test

    Public Shared Sub Main()
        Dim t As New Test()
        ' Write a purchase order.
        t.SerializeObject("simple.xml")
    End Sub    

    Private Sub SerializeObject(ByVal filename As String)
        Console.WriteLine("Writing With XmlTextWriter")

        Dim serializer As New XmlSerializer(GetType(OrderedItem))
        Dim i As New OrderedItem()
        With i
            .ItemName = "Widget"
            .Description = "Regular Widget"
            .Quantity = 10
            .UnitPrice = CDec(2.3)
            .Calculate()
        End With

        ' Create an XmlSerializerNamespaces object.
        Dim ns As New XmlSerializerNamespaces()
        ' Add two namespaces with prefixes.
        ns.Add("inventory", "http://www.cpandl.com")
        ns.Add("money", "http://www.cohowinery.com")
        ' Create an XmlTextWriter using a FileStream.
        Dim fs As New FileStream(filename, FileMode.Create)
        Dim writer As New XmlTextWriter(fs, New UTF8Encoding())
        ' Serialize using the XmlTextWriter.
        serializer.Serialize(writer, i, ns)
        writer.Close()
    End Sub
End Class




<?xml version="1.0"?>
 <OrderedItem xmlns:inventory="http://www.cpandl.com" xmlns:money="http://www.cohowinery.com">
   <inventory:ItemName>Widget</inventory:ItemName>
   <inventory:Description>Regular Widget</inventory:Description>
   <money:UnitPrice>2.3</money:UnitPrice>
   <inventory:Quantity>10</inventory:Quantity>
   <money:LineTotal>23</money:LineTotal>
 </OrderedItem>



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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