XmlValidatingReader.Schemas XmlValidatingReader.Schemas XmlValidatingReader.Schemas XmlValidatingReader.Schemas Property

定義

検証に使用する XmlSchemaCollection を取得します。Gets a XmlSchemaCollection to use for validation.

public:
 property System::Xml::Schema::XmlSchemaCollection ^ Schemas { System::Xml::Schema::XmlSchemaCollection ^ get(); };
public System.Xml.Schema.XmlSchemaCollection Schemas { get; }
member this.Schemas : System.Xml.Schema.XmlSchemaCollection
Public ReadOnly Property Schemas As XmlSchemaCollection

プロパティ値

検証に使用する XmlSchemaCollectionThe XmlSchemaCollection to use for validation.

次の例では、XmlSchemaCollection に格納されているスキーマを使用して、3つの XML ファイルを検証します。The following example validates three XML files using schemas stored in the XmlSchemaCollection.

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

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Schema;

public ref class SchemaCollectionSample
{
private:
   XmlTextReader^ reader;
   XmlValidatingReader^ vreader;
   Boolean m_success;

public:
   SchemaCollectionSample()
   {
      reader = nullptr;
      vreader = nullptr;
      m_success = true;

      //Load the schema collection.
      XmlSchemaCollection^ xsc = gcnew XmlSchemaCollection;
      String^ schema = "books.xsd";
      String^ schema1 = "schema1.xdr";
      xsc->Add( "urn:bookstore-schema", schema ); //XSD schema
      xsc->Add( "urn:newbooks-schema", schema1 ); //XDR schema
      String^ doc1 = "booksSchema.xml";
      String^ doc2 = "booksSchemaFail.xml";
      String^ doc3 = "newbooks.xml";

      //Validate the files using schemas stored in the collection.
      Validate( doc1, xsc ); //Should pass.
      Validate( doc2, xsc ); //Should fail.   
      Validate( doc3, xsc ); //Should fail. 
   }


private:
   void Validate( String^ filename, XmlSchemaCollection^ xsc )
   {
      m_success = true;
      Console::WriteLine();
      Console::WriteLine( "Validating XML file {0}...", filename );
      reader = gcnew XmlTextReader( filename );

      //Create a validating reader.
      vreader = gcnew XmlValidatingReader( reader );

      //Validate using the schemas stored in the schema collection.
      vreader->Schemas->Add( xsc );

      //Set the validation event handler
      vreader->ValidationEventHandler += gcnew ValidationEventHandler( this, &SchemaCollectionSample::ValidationCallBack );

      //Read and validate the XML data.
      while ( vreader->Read() )
      {}

      Console::WriteLine( "Validation finished. Validation {0}", (m_success == true ? (String^)"successful" : "failed") );
      Console::WriteLine();

      //Close the reader.
      vreader->Close();
   }

   void ValidationCallBack( Object^ /*sender*/, ValidationEventArgs^ args )
   {
      m_success = false;
      Console::Write( "\r\n\tValidation error: {0}", args->Message );
   }

};

int main()
{
   gcnew SchemaCollectionSample;
}
using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;

public class SchemaCollectionSample
{
  private const String doc1 = "booksSchema.xml";
  private const String doc2 = "booksSchemaFail.xml";
  private const String doc3 = "newbooks.xml";
  private const String schema = "books.xsd";
  private const String schema1 = "schema1.xdr";
  
  private XmlTextReader reader=null;
  private XmlValidatingReader vreader = null;
  private Boolean m_success = true;

  public SchemaCollectionSample ()
  {
    //Load the schema collection.
    XmlSchemaCollection xsc = new XmlSchemaCollection();
    xsc.Add("urn:bookstore-schema", schema);  //XSD schema
    xsc.Add("urn:newbooks-schema", schema1);  //XDR schema

    //Validate the files using schemas stored in the collection.
    Validate(doc1, xsc); //Should pass.
    Validate(doc2, xsc); //Should fail.   
    Validate(doc3, xsc); //Should fail. 

  }    

  public static void Main ()
  {
      SchemaCollectionSample validation = new SchemaCollectionSample();
  }

  private void Validate(String filename, XmlSchemaCollection xsc)
  {
   
     m_success = true;
     Console.WriteLine();
     Console.WriteLine("Validating XML file {0}...", filename.ToString());
     reader = new XmlTextReader (filename);
        
     //Create a validating reader.
    vreader = new XmlValidatingReader (reader);

     //Validate using the schemas stored in the schema collection.
     vreader.Schemas.Add(xsc);
 
     //Set the validation event handler
     vreader.ValidationEventHandler += new ValidationEventHandler (ValidationCallBack);
     //Read and validate the XML data.
     while (vreader.Read()){}
     Console.WriteLine ("Validation finished. Validation {0}", (m_success==true ? "successful" : "failed"));
     Console.WriteLine();

     //Close the reader.
     vreader.Close();

  } 


  private void ValidationCallBack (object sender, ValidationEventArgs args)
  {
     m_success = false;

     Console.Write("\r\n\tValidation error: " + args.Message);

  }  
}
Option Strict
Option Explicit

Imports System.IO
Imports System.Xml
Imports System.Xml.Schema

Public Class SchemaCollectionSample
    Private doc1 As String = "booksSchema.xml"
    Private doc2 As String = "booksSchemaFail.xml"
    Private doc3 As String = "newbooks.xml"
    Private schema As String = "books.xsd"
    Private schema1 As String = "schema1.xdr"
    
    Private reader As XmlTextReader = Nothing
    Private vreader As XmlValidatingReader = Nothing
    Private m_success As Boolean = True
    
    Public Sub New()

            'Load the schema collection
            Dim xsc As New XmlSchemaCollection()
            xsc.Add("urn:bookstore-schema", schema) 'XSD schema
            xsc.Add("urn:newbooks-schema", schema1) 'XDR schema

            'Validate the files using schemas stored in the collection.
            Validate(doc1, xsc) 'Should pass.
            Validate(doc2, xsc) 'Should fail.   
            Validate(doc3, xsc) 'Should fail. 
        
    End Sub
    
    Public Shared Sub Main()
        Dim validation As New SchemaCollectionSample()
    End Sub
    
    Private Sub Validate(filename As String, xsc As XmlSchemaCollection)
        
            m_success = True
            Console.WriteLine()
            Console.WriteLine("Validating XML file {0}...", filename.ToString())
            reader = New XmlTextReader(filename)
            
            'Create a validating reader.
            vreader = New XmlValidatingReader(reader)
            
            'Use the schemas stored in the schema collection.
            vreader.Schemas.Add(xsc)
            
            'Set the validation event handler.
            AddHandler vreader.ValidationEventHandler, AddressOf ValidationCallBack
            'Read and validate the XML data.
            While vreader.Read()
            End While
            Console.WriteLine("Validation finished. Validation {0}", IIf(m_success, "successful", "failed"))
            Console.WriteLine()

            'Close the reader.
            vreader.Close()

    End Sub
       
    
    Private Sub ValidationCallBack(sender As Object, args As ValidationEventArgs)
        m_success = False
        
        Console.Write((ControlChars.CrLf & ControlChars.Tab & "Validation error: " & args.Message))
    End Sub
End Class 'SchemaCollectionSample

このサンプルでは、次の5つの入力ファイルを使用します。The sample uses the following five input files:

booksSchema.xml


<?xml version='1.0'?>
 <bookstore xmlns="urn:bookstore-schema">
   <book genre="autobiography">
     <title>The Autobiography of Benjamin Franklin</title>
     <author>
       <first-name>Benjamin</first-name>
       <last-name>Franklin</last-name>
     </author>
     <price>8.99</price>
   </book>
   <book genre="novel">
     <title>The Confidence Man</title>
     <author>
       <first-name>Herman</first-name>
       <last-name>Melville</last-name>
     </author>
     <price>11.99</price>
   </book>
 </bookstore>

booksSchemaFail.xml


<?xml version='1.0'?>
 <bookstore xmlns="urn:bookstore-schema">
   <book>
     <author>
       <first-name>Benjamin</first-name>
       <last-name>Franklin</last-name>
     </author>
   </book>
   <book genre="novel">
     <title>The Confidence Man</title>
     <author>
       <first-name>Herman</first-name>
       <last-name>Melville</last-name>
     </author>
     <price>11.99</price>
   </book>
   <book genre="philosophy">
     <title>The Gorgias</title>
     <author>
       <name>Plato</name>
     </author>
     <price>9.99</price>
   </book>
 </bookstore>

newbooks.xml


<?xml version='1.0'?>
<bookstore xmlns="urn:newbooks-schema">
  <book genre="novel" style="hardcover">
    <title>The Handmaid's Tale</title>
    <author>
      <first-name>Margaret</first-name>
      <last-name>Atwood</last-name>
    </author>
    <price>19.95</price>
  </book>
  <book genre="novel" style="other">
    <title>The Poisonwood Bible</title>
    <author>
      <first-name>Barbara</first-name>
      <last-name>Kingsolver</last-name>
    </author>
    <price>11.99</price>
  </book>
</bookstore>

books.xsd


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns="urn:bookstore-schema"
     elementFormDefault="qualified"
     targetNamespace="urn:bookstore-schema">
 
  <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: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>

schema1.xdr


<?xml version="1.0"?>
<Schema xmlns="urn:schemas-microsoft-com:xml-data"
        xmlns:dt="urn:schemas-microsoft-com:datatypes">
  <ElementType name="first-name" content="textOnly"/>
  <ElementType name="last-name" content="textOnly"/>
  <ElementType name="name" content="textOnly"/>
  <ElementType name="price" content="textOnly" dt:type="fixed.14.4"/>
  <ElementType name="author" content="eltOnly" order="one">
    <group order="seq">
      <element type="name"/>
    </group>
    <group order="seq">
      <element type="first-name"/>
      <element type="last-name"/>
    </group>
  </ElementType>
  <ElementType name="title" content="textOnly"/>
  <AttributeType name="genre" dt:type="string"/>
  <AttributeType name="style" dt:type="enumeration"
        dt:values="paperback hardcover"/>
  <ElementType name="book" content="eltOnly">
    <attribute type="genre" required="yes"/>
    <attribute type="style" required="yes"/>
    <element type="title"/>
    <element type="author"/>
    <element type="price"/>
  </ElementType>
  <ElementType name="bookstore" content="eltOnly">
    <element type="book"/>
  </ElementType>
</Schema>

注釈

注意

XmlValidatingReaderは、クラスは.NET Framework 2.0.NET Framework 2.0互換性のために残されています。The XmlValidatingReader class is obsolete in .NET Framework 2.0.NET Framework 2.0. XmlReaderSettingsクラスXmlReaderCreateメソッドを使用して、検証インスタンスを作成できます。You can create a validating XmlReader instance by using the XmlReaderSettings class and the Create method. 詳細については、XmlReader のリファレンス ページの「解説」を参照してください。For more information, see the Remarks section of the XmlReader reference page.

XmlSchemaCollection 、事前に読み込まれた xml データ削減 (XDR) および xml スキーマ定義言語 (XSD) スキーマを保持します。The XmlSchemaCollection holds pre-loaded XML-Data Reduced (XDR) and XML Schema definition language (XSD) schemas. このプロパティは、スキーマのキャッシュへのアクセスをリーダーに付与し、毎回スキーマを再読み込みせずに検証できるようにします。This property gives the reader access to the cache of schemas and allows it to validate without having to re-load schemas every time. リーダーは、 XmlSchemaCollectionに何も追加しません。The reader does not add anything to the XmlSchemaCollection.

XmlSchemaCollection他の名前空間を参照する要素またはinclude import要素を含む XML スキーマ (XSD) が含まれている場合、これらの他の名前空間のスキーマは検証目的でのみ読み込まれます。If the XmlSchemaCollection includes an XML schema (XSD) which contains include or import elements that reference other namespaces, the schemas for these other namespaces are loaded for validation purposes only. これらのスキーマがスキーマコレクションに明示的に追加されていない限り、コレクションのメソッドやプロパティを使用してアクセスすることはできません。Unless these schemas were explicitly added to the schema collection, they will not be accessible using any of the collection methods or properties. たとえば、スキーマファイルへa.xsd b.xsdの参照を含むスキーマファイルがコレクションに含まれている場合は、コレクションのb.xsdメソッドまたはプロパティを使用してアクセスする前に、スキーマコレクションにを追加する必要があります。For example, if the collection contains the schema file a.xsd, which contains a reference to the schema file b.xsd, you must add b.xsd to the schema collection before you can access it using any of the collection methods or properties.

XmlValidatingReader.XmlResolver XmlSchemaCollection.Add XmlResolverプロパティを使用してにアクセスすると、メソッドはプロパティによって指定されたを使用します。 XmlSchemaCollection SchemasWhen the XmlSchemaCollection is accessed using the Schemas property, the XmlSchemaCollection.Add method uses the XmlResolver specified by the XmlValidatingReader.XmlResolver property.

注意

XmlSchemaCollection 最初Readの呼び出しの前に、スキーマをに追加する必要があります。The schemas must be added to the XmlSchemaCollection before the first Read call.

適用対象

こちらもご覧ください