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XmlSerializer.Serialize Method (TextWriter, Object, XmlSerializerNamespaces)

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

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

void Serialize (
	TextWriter^ textWriter, 
	Object^ o, 
	XmlSerializerNamespaces^ namespaces
public void Serialize (
	TextWriter textWriter, 
	Object o, 
	XmlSerializerNamespaces namespaces
public function Serialize (
	textWriter : TextWriter, 
	o : Object, 
	namespaces : XmlSerializerNamespaces
Not applicable.



The TextWriter used to write the XML document.


The Object to serialize.


The XmlSerializerNamespaces that contains namespaces for the generated XML document.

Exception typeCondition


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 textWriter parameter to specify an object that derives from the abstract TextWriter class. Classes that derive from TextWriter class include:


The XmlSerializer cannot serialize the following: arrays of ArrayList and arrays of List.

The following example serializes an object with a TextWriter. The example also creates an XmlSerializerNamespaces object and adds two namespaces to the object. The class that defines the serialized object is also attributed with XmlElementAttribute attributes to specify the namespace for each element.

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;

// This is the class that will be serialized.
public ref class OrderedItem

   String^ ItemName;

   String^ Description;

   Decimal UnitPrice;

   int Quantity;

   Decimal LineTotal;

   // A custom method used to calculate price per item.
   void Calculate()
      LineTotal = UnitPrice * Quantity;

void SerializeObject( String^ filename )
   Console::WriteLine( "Writing With TextWriter" );

   // Create an XmlSerializer instance using the type.
   XmlSerializer^ serializer = gcnew XmlSerializer( OrderedItem::typeid );
   OrderedItem^ i = gcnew OrderedItem;
   i->ItemName = "Widget";
   i->Description = "Regular Widget";
   i->Quantity = 10;
   i->UnitPrice = (Decimal)2.30;

   // Create an XmlSerializerNamespaces object.
   XmlSerializerNamespaces^ ns = gcnew XmlSerializerNamespaces;

   // Add two namespaces with prefixes.
   ns->Add( "inventory", "" );
   ns->Add( "money", "" );

   // Create a StreamWriter to write with.
   TextWriter^ writer = gcnew StreamWriter( filename );

   /* Serialize using the object using the TextWriter 
      and namespaces. */
   serializer->Serialize( writer, i, ns );

int main()
   // Write a purchase order.
   SerializeObject( "simple.xml" );

import System.*;
import System.IO.*;
import System.Xml.Serialization.*;

// This is the class that will be serialized.
public class OrderedItem
    /** @attribute XmlElement(Namespace = "")
    public String itemName;
    /** @attribute XmlElement(Namespace = "")
    public String description;
    /** @attribute XmlElement(Namespace = "")
    public System.Decimal unitPrice;
    /** @attribute XmlElement(Namespace = "")
    public int quantity;
    /** @attribute XmlElement(Namespace = "")
    public System.Decimal lineTotal;

    // A custom method used to calculate price per item.
    public void Calculate()
        lineTotal = Decimal.Multiply(unitPrice, Convert.ToDecimal(quantity));
    } //Calculate
} //OrderedItem

public class Test
    public static void main(String[] args)
        Test t = new Test();
        // Write a purchase order.
    } //main

    private void SerializeObject(String fileName)
        Console.WriteLine("Writing With TextWriter");

        // Create an XmlSerializer instance using the type.
        XmlSerializer serializer =
            new XmlSerializer(OrderedItem.class.ToType());
        OrderedItem i = new OrderedItem();
        i.itemName = "Widget";
        i.description = "Regular Widget";
        i.quantity = 10;
        i.unitPrice = Convert.ToDecimal(2.3);

        // Create an XmlSerializerNamespaces object.
        XmlSerializerNamespaces ns = new XmlSerializerNamespaces();

        // Add two namespaces with prefixes.
        ns.Add("inventory", "");
        ns.Add("money", "");

        // Create a StreamWriter to write with.
        TextWriter writer = new StreamWriter(fileName);

        /* Serialize using the object using the TextWriter 
           and namespaces. */
        serializer.Serialize(writer, i, ns);
    } //SerializeObject
} //Test

<?xml version="1.0"?>
 <OrderedItem xmlns:inventory="" xmlns:money="">
   <inventory:Description>Regular Widget</inventory:Description>

Windows 98, Windows Server 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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0