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== Reading author instances from an XmlReader using XmlSerialization (C#)==



<source lang="csharp">
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>

</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;

[XmlRoot(ElementName = "author", Namespace = "http://example.books.ru")]
public class Author
{
[XmlElement(ElementName = "first-name")]
public string FirstName;
[XmlElement(ElementName = "last-name")]
public string LastName;
}

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
XmlSerializerFactory factory = new XmlSerializerFactory();

XmlReaderSettings settings = new XmlReaderSettings();
NameTable nt = new NameTable();
object book = nt.Add("book");
object price = nt.Add("price");
object author = nt.Add("author");
settings.NameTable = nt;
string booksSchemaFile = Path.rubine(Request.PhysicalApplicationPath, "Data.xsd");
settings.Schemas.Add(null, XmlReader.Create(booksSchemaFile));
settings.ValidationType = ValidationType.Schema;
settings.ValidationFlags =
XmlSchemaValidationFlags.ReportValidationWarnings;
settings.ValidationEventHandler +=
new ValidationEventHandler(settings_ValidationEventHandler);
settings.IgnoreWhitespace = true;
settings.IgnoreComments = true;
string booksFile = Path.rubine(Request.PhysicalApplicationPath, "Data.xml");
using (XmlReader reader = XmlReader.Create(booksFile, settings))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element && author.Equals(reader.LocalName))
{
XmlSerializer xs = factory.CreateSerializer(typeof(Author));
Author a = (Author)xs.Deserialize(reader.ReadSubtree());
Response.Write(String.Format("Author: {1}, {0}<BR/>",
a.FirstName, a.LastName));
}
}
}
}
void settings_ValidationEventHandler(object sender, System.Xml.Schema.ValidationEventArgs e)
{
Response.Write(e.Message);
}
}
File: Data.xml
<?xml version="1.0"?>
<bookstore xmlns="http://example.books.ru"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<book genre="A"
publicationdate="1981"
ISBN="1-11111-11-0">
<title>title 1</title>
<author>
<first-name>A</first-name>
<last-name>B</last-name>
</author>
<price>8</price>
</book>
<book genre="B"
publicationdate="1999"
ISBN="0-222-22222-2">
<title>title 2</title>
<author>
<first-name>C</first-name>
<last-name>D</last-name>
</author>
<price>11.99</price>
</book>
</bookstore>
File: Data.xsd
<?xml version="1.0" encoding="utf-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://example.books.ru" xmlns="http://example.books.ru" targetNamespace="http://example.books.ru" elementFormDefault="qualified">
<xsd:element name="bookstore" type="bookstoreType" />
<xsd:complexType name="bookstoreType">
<xsd:sequence maxOccurs="unbounded">
<xsd:element name="book" type="bookType" />
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="bookType">
<xsd:sequence>
<xsd:element name="title" type="xsd:string" />
<xsd:element name="author" type="authorName" />
<xsd:element name="price" type="xsd:decimal" />
</xsd:sequence>
<xsd:attribute name="genre" type="xsd:string" />
<xsd:attribute name="publicationdate" type="xsd:string" />
<xsd:attribute name="ISBN" type="xsd:string" />
</xsd:complexType>
<xsd:complexType name="authorName">
<xsd:sequence>
<xsd:element name="first-name" type="xsd:string" />
<xsd:element name="last-name" type="xsd:string" />
</xsd:sequence>
</xsd:complexType>
</xsd:schema></source>

== Reading author instances from an XmlReader using XmlSerialization (VB)==



<source lang="csharp">
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>

</div>
</form>
</body>
</html>
File: Default.aspx.vb
Imports System.IO
Imports System.Xml
Imports System.Xml.Schema
Imports System.Xml.Serialization
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles Me.Load
Dim factory As New XmlSerializerFactory
Dim settings As New XmlReaderSettings()
Dim nt As New NameTable()
Dim book As Object = nt.Add("book")
Dim price As Object = nt.Add("price")
Dim author As Object = nt.Add("author")
settings.NameTable = nt
Dim booksSchemaFile As String = Path.rubine(Request.PhysicalApplicationPath, "Data.xsd")
settings.Schemas.Add(Nothing, XmlReader.Create(booksSchemaFile))
settings.ValidationType = ValidationType.Schema
settings.ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings
AddHandler settings.ValidationEventHandler, _
AddressOf settings_ValidationEventHandler
settings.IgnoreWhitespace = True
settings.IgnoreComments = True
Dim booksFile As String = _
Path.rubine(Request.PhysicalApplicationPath, "Data.xml")
Using reader As XmlReader = XmlReader.Create(booksFile, settings)
While (reader.Read())
If (reader.NodeType = XmlNodeType.Element And author.Equals(reader.LocalName)) Then
Dim xs As XmlSerializer = factory.CreateSerializer(GetType(Author))
Dim a As Author = CType(xs.Deserialize(reader.ReadSubtree), Author)
Response.Write(String.Format("Author: {1}, {0}<BR/>", _
a.FirstName, a.LastName))
End If
End While
End Using
End Sub
Sub settings_ValidationEventHandler(ByVal sender As Object, _
ByVal e As System.Xml.Schema.ValidationEventArgs)
Response.Write(e.Message)
End Sub
End Class
<XmlRoot(ElementName:="author", _
Namespace:="http://example.books.ru")> Public Class Author
<XmlElement(ElementName:="first-name")> Public FirstName As String
<XmlElement(ElementName:="last-name")> Public LastName As String
End Class
File: Data.xml
<?xml version="1.0"?>
<bookstore xmlns="http://example.books.ru"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<book genre="A"
publicationdate="1981"
ISBN="1-11111-11-0">
<title>title 1</title>
<author>
<first-name>A</first-name>
<last-name>B</last-name>
</author>
<price>8</price>
</book>
<book genre="B"
publicationdate="1999"
ISBN="0-222-22222-2">
<title>title 2</title>
<author>
<first-name>C</first-name>
<last-name>D</last-name>
</author>
<price>11.99</price>
</book>
</bookstore>
File: Data.xsd
<?xml version="1.0" encoding="utf-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://example.books.ru" xmlns="http://example.books.ru" targetNamespace="http://example.books.ru" elementFormDefault="qualified">
<xsd:element name="bookstore" type="bookstoreType" />
<xsd:complexType name="bookstoreType">
<xsd:sequence maxOccurs="unbounded">
<xsd:element name="book" type="bookType" />
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="bookType">
<xsd:sequence>
<xsd:element name="title" type="xsd:string" />
<xsd:element name="author" type="authorName" />
<xsd:element name="price" type="xsd:decimal" />
</xsd:sequence>
<xsd:attribute name="genre" type="xsd:string" />
<xsd:attribute name="publicationdate" type="xsd:string" />
<xsd:attribute name="ISBN" type="xsd:string" />
</xsd:complexType>
<xsd:complexType name="authorName">
<xsd:sequence>
<xsd:element name="first-name" type="xsd:string" />
<xsd:element name="last-name" type="xsd:string" />
</xsd:sequence>
</xsd:complexType>
</xsd:schema></source>

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в 15:30, 26 мая 2010

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