XmlReaderSettings.ValidationType Propriété

public:
 property System::Xml::ValidationType ValidationType { System::Xml::ValidationType get(); void set(System::Xml::ValidationType value); };

public System.Xml.ValidationType ValidationType { get; set; }

member this.ValidationType : System.Xml.ValidationType with get, set

Public Property ValidationType As ValidationType

Valeur de propriété

ValidationType

L'une des valeurs ValidationType qui indique si XmlReader exécute la validation ou l'assignation de type lors de la lecture. La valeur par défaut est ValidationType.None.

Exemples

L’exemple suivant valide l’utilisation d’un schéma stocké dans le XmlSchemaSet.

#using <System.Xml.dll>

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

// Display any validation errors.
static void ValidationCallBack( Object^ /*sender*/, ValidationEventArgs^ e )
{
   Console::WriteLine( L"Validation Error:\n   {0}", e->Message );
   Console::WriteLine();
}

int main()
{
   // Create the XmlSchemaSet class.
   XmlSchemaSet^ sc = gcnew XmlSchemaSet;

   // Add the schema to the collection.
   sc->Add( L"urn:bookstore-schema", L"books.xsd" );

   // Set the validation settings.
   XmlReaderSettings^ settings = gcnew XmlReaderSettings;
   settings->ValidationType = ValidationType::Schema;
   settings->Schemas = sc;
   settings->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallBack);

   // Create the XmlReader object.
   XmlReader^ reader = XmlReader::Create( L"booksSchemaFail.xml", settings );

   // Parse the file. 
   while ( reader->Read() )
      ;

   return 1;
}
// The example displays output like the following:
//   Validation Error: 
//        The element 'book' in namespace 'urn:bookstore-schema' has invalid child element 'author' 
//        in namespace 'urn:bookstore-schema'. List of possible elements expected: 'title' in 
//        namespace 'urn:bookstore-schema'.
//
//    Validation Error: 
//       The element 'author' in namespace 'urn:bookstore-schema' has invalid child element 'name' 
//       in namespace 'urn:bookstore-schema'. List of possible elements expected: 'first-name' in 
//       namespace 'urn:bookstore-schema'.

using System;
using System.Xml;
using System.Xml.Schema;
using System.IO;

public class Sample
{
  public static void Main() {

    // Create the XmlSchemaSet class.
    XmlSchemaSet sc = new XmlSchemaSet();

    // Add the schema to the collection.
    sc.Add("urn:bookstore-schema", "books.xsd");

    // Set the validation settings.
    XmlReaderSettings settings = new XmlReaderSettings();
    settings.ValidationType = ValidationType.Schema;
    settings.Schemas = sc;
    settings.ValidationEventHandler += ValidationCallBack;

    // Create the XmlReader object.
    XmlReader reader = XmlReader.Create("booksSchemaFail.xml", settings);

    // Parse the file.
    while (reader.Read());
  }

  // Display any validation errors.
  private static void ValidationCallBack(object sender, ValidationEventArgs e) {
    Console.WriteLine($"Validation Error:\n   {e.Message}\n");
  }
}
// The example displays output like the following:
//   Validation Error:
//        The element 'book' in namespace 'urn:bookstore-schema' has invalid child element 'author'
//        in namespace 'urn:bookstore-schema'. List of possible elements expected: 'title' in
//        namespace 'urn:bookstore-schema'.
//
//    Validation Error:
//       The element 'author' in namespace 'urn:bookstore-schema' has invalid child element 'name'
//       in namespace 'urn:bookstore-schema'. List of possible elements expected: 'first-name' in
//       namespace 'urn:bookstore-schema'.

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

Public Module Sample 
  Public Sub Main() 

    ' Create the XmlSchemaSet class.
    Dim sc as XmlSchemaSet = new XmlSchemaSet()

    ' Add the schema to the collection.
    sc.Add("urn:bookstore-schema", "books.xsd")

    ' Set the validation settings.
    Dim settings as XmlReaderSettings = new XmlReaderSettings()
    settings.ValidationType = ValidationType.Schema
    settings.Schemas = sc
    AddHandler settings.ValidationEventHandler, AddressOf ValidationCallBack
 
    ' Create the XmlReader object.
    Dim reader as XmlReader = XmlReader.Create("booksSchemaFail.xml", settings)

    ' Parse the file. 
    While reader.Read()
    End While
    
  End Sub

  ' Display any validation errors.
  Private Sub ValidationCallBack(sender as object, e as ValidationEventArgs) 
    Console.WriteLine($"Validation Error:{vbCrLf}   {e.Message}")
    Console.WriteLine()
  End Sub
End Module
' The example displays output like the following:
'   Validation Error: 
'        The element 'book' in namespace 'urn:bookstore-schema' has invalid child element 'author' 
'        in namespace 'urn:bookstore-schema'. List of possible elements expected: 'title' in 
'        namespace 'urn:bookstore-schema'.
'
'    Validation Error: 
'       The element 'author' in namespace 'urn:bookstore-schema' has invalid child element 'name' 
'       in namespace 'urn:bookstore-schema'. List of possible elements expected: 'first-name' in 
'       namespace 'urn:bookstore-schema'.

L’exemple utilise les fichiers d’entrée suivants :

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>

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>

Remarques

Le tableau suivant décrit les ValidationType valeurs.

S’applique à

Voir aussi

• XmlReader
• Create(String)
• XmlSchemaValidationFlags