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XmlSchemaEnumerationFacet Classe

Definizione

Rappresenta il facet enumeration di XML Schema come specificato dal World Wide Web Consortium (W3C). Questa classe specifica un elenco di valori validi per un elemento simpleType. La dichiarazione è contenuta entro una dichiarazione restriction.

public ref class XmlSchemaEnumerationFacet : System::Xml::Schema::XmlSchemaFacet
public class XmlSchemaEnumerationFacet : System.Xml.Schema.XmlSchemaFacet
type XmlSchemaEnumerationFacet = class
    inherit XmlSchemaFacet
Public Class XmlSchemaEnumerationFacet
Inherits XmlSchemaFacet
Ereditarietà

Esempio

Nell'esempio seguente viene illustrato l'uso della XmlSchemaEnumerationFacet classe .

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

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

class XmlSchemaExamples
{
public:

    static void Main()
    {
        XmlSchema^ schema = gcnew XmlSchema();

        // <xs:simpleType name="SizeType">
        XmlSchemaSimpleType^ SizeType = gcnew XmlSchemaSimpleType();
        SizeType->Name = "SizeType";

        // <xs:restriction base="xs:string">
        XmlSchemaSimpleTypeRestriction^ restriction = gcnew XmlSchemaSimpleTypeRestriction();
        restriction->BaseTypeName = gcnew XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");

        // <xs:enumeration value="Small"/>
        XmlSchemaEnumerationFacet^ enumerationSmall = gcnew XmlSchemaEnumerationFacet();
        enumerationSmall->Value = "Small";
        restriction->Facets->Add(enumerationSmall);

        // <xs:enumeration value="Medium"/>
        XmlSchemaEnumerationFacet^ enumerationMedium = gcnew XmlSchemaEnumerationFacet();
        enumerationMedium->Value = "Medium";
        restriction->Facets->Add(enumerationMedium);

        // <xs:enumeration value="Large"/>
        XmlSchemaEnumerationFacet^ enumerationLarge = gcnew XmlSchemaEnumerationFacet();
        enumerationLarge->Value = "Large";
        restriction->Facets->Add(enumerationLarge);

        SizeType->Content = restriction;

        schema->Items->Add(SizeType);

        // <xs:element name="Item">
        XmlSchemaElement^ elementItem = gcnew XmlSchemaElement();
        elementItem->Name = "Item";

        // <xs:complexType>
        XmlSchemaComplexType^ complexType = gcnew XmlSchemaComplexType();

        // <xs:attribute name="Size" type="SizeType"/>
        XmlSchemaAttribute^ attributeSize = gcnew XmlSchemaAttribute();
        attributeSize->Name = "Size";
        attributeSize->SchemaTypeName = gcnew XmlQualifiedName("SizeType", "");
        complexType->Attributes->Add(attributeSize);

        elementItem->SchemaType = complexType;

        schema->Items->Add(elementItem);

        XmlSchemaSet^ schemaSet = gcnew XmlSchemaSet();
        schemaSet->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallbackOne);
        schemaSet->Add(schema);
        schemaSet->Compile();

        XmlSchema^ compiledSchema;

        for each (XmlSchema^ schema1 in schemaSet->Schemas())
        {
            compiledSchema = schema1;
        }

        XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager(gcnew NameTable());
        nsmgr->AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
        compiledSchema->Write(Console::Out, nsmgr);
    }

    static void ValidationCallbackOne(Object^ sender, ValidationEventArgs^ args)
    {
        Console::WriteLine(args->Message);
    }
};

int main()
{
    XmlSchemaExamples::Main();
    return 0;
};
using System;
using System.Xml;
using System.Xml.Schema;

class XMLSchemaExamples
{
    public static void Main()
    {

        XmlSchema schema = new XmlSchema();

        // <xs:simpleType name="SizeType">
        XmlSchemaSimpleType SizeType = new XmlSchemaSimpleType();
        SizeType.Name = "SizeType";

        // <xs:restriction base="xs:string">
        XmlSchemaSimpleTypeRestriction restriction = new XmlSchemaSimpleTypeRestriction();
        restriction.BaseTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");

        // <xs:enumeration value="Small"/>
        XmlSchemaEnumerationFacet enumerationSmall = new XmlSchemaEnumerationFacet();
        enumerationSmall.Value = "Small";
        restriction.Facets.Add(enumerationSmall);

        // <xs:enumeration value="Medium"/>
        XmlSchemaEnumerationFacet enumerationMedium = new XmlSchemaEnumerationFacet();
        enumerationMedium.Value = "Medium";
        restriction.Facets.Add(enumerationMedium);

        // <xs:enumeration value="Large"/>
        XmlSchemaEnumerationFacet enumerationLarge = new XmlSchemaEnumerationFacet();
        enumerationLarge.Value = "Large";
        restriction.Facets.Add(enumerationLarge);

        SizeType.Content = restriction;

        schema.Items.Add(SizeType);

        // <xs:element name="Item">
        XmlSchemaElement elementItem = new XmlSchemaElement();
        elementItem.Name = "Item";

        // <xs:complexType>
        XmlSchemaComplexType complexType = new XmlSchemaComplexType();

        // <xs:attribute name="Size" type="SizeType"/>
        XmlSchemaAttribute attributeSize = new XmlSchemaAttribute();
        attributeSize.Name = "Size";
        attributeSize.SchemaTypeName = new XmlQualifiedName("SizeType", "");
        complexType.Attributes.Add(attributeSize);

        elementItem.SchemaType = complexType;

        schema.Items.Add(elementItem);

        XmlSchemaSet schemaSet = new XmlSchemaSet();
        schemaSet.ValidationEventHandler += new ValidationEventHandler(ValidationCallbackOne);
        schemaSet.Add(schema);
        schemaSet.Compile();

        XmlSchema compiledSchema = null;

        foreach (XmlSchema schema1 in schemaSet.Schemas())
        {
            compiledSchema = schema1;
        }

        XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
        compiledSchema.Write(Console.Out, nsmgr);
    }

    public static void ValidationCallbackOne(object sender, ValidationEventArgs args)
    {

        Console.WriteLine(args.Message);
    }
}
Option Strict On
Option Explicit On

Imports System.Xml
Imports System.Xml.Schema

Class XMLSchemaExamples

    Public Shared Sub Main()

        Dim schema As New XmlSchema()

        ' <xs:simpleType name="SizeType">
        Dim SizeType As New XmlSchemaSimpleType()
        SizeType.Name = "SizeType"

        ' <xs:restriction base="xs:string">
        Dim restriction As New XmlSchemaSimpleTypeRestriction()
        restriction.BaseTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema")

        ' <xs:enumeration value="Small"/>
        Dim enumerationSmall As New XmlSchemaEnumerationFacet()
        enumerationSmall.Value = "Small"
        restriction.Facets.Add(enumerationSmall)

        ' <xs:enumeration value="Medium"/>
        Dim enumerationMedium As New XmlSchemaEnumerationFacet()
        enumerationMedium.Value = "Medium"
        restriction.Facets.Add(enumerationMedium)

        ' <xs:enumeration value="Large"/>
        Dim enumerationLarge As New XmlSchemaEnumerationFacet()
        enumerationLarge.Value = "Large"
        restriction.Facets.Add(enumerationLarge)

        SizeType.Content = restriction

        schema.Items.Add(SizeType)

        ' <xs:element name="Item">
        Dim elementItem As New XmlSchemaElement()
        elementItem.Name = "Item"

        ' <xs:complexType>
        Dim complexType As New XmlSchemaComplexType()

        ' <xs:attribute name="Size" type="SizeType"/>
        Dim attributeSize As New XmlSchemaAttribute()
        attributeSize.Name = "Size"
        attributeSize.SchemaTypeName = New XmlQualifiedName("SizeType", "")
        complexType.Attributes.Add(attributeSize)

        elementItem.SchemaType = complexType

        schema.Items.Add(elementItem)

        Dim schemaSet As New XmlSchemaSet()
        AddHandler schemaSet.ValidationEventHandler, AddressOf ValidationCallbackOne

        schemaSet.Add(schema)
        schemaSet.Compile()

        Dim compiledSchema As XmlSchema = Nothing

        For Each schema1 As XmlSchema In schemaSet.Schemas()
            compiledSchema = schema1
        Next

        Dim nsmgr As New XmlNamespaceManager(New NameTable())
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema")
        compiledSchema.Write(Console.Out, nsmgr)
    End Sub


    Public Shared Sub ValidationCallbackOne(ByVal sender As Object, ByVal args As ValidationEventArgs)
        Console.WriteLine(args.Message)
    End Sub
End Class

Per l'esempio di codice precedente viene generato il file XML seguente.


<?xml version="1.0" encoding="IBM437"?>
<xs:schema  xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:simpleType name="SizeType">
    <xs:restriction base="xs:string">
      <xs:enumeration value="Small" />
      <xs:enumeration value="Medium" />
      <xs:enumeration value="Large" />
    </xs:restriction>
  </xs:simpleType>
  <xs:element name="Item">
    <xs:complexType>
      <xs:attribute name="Size" type="SizeType" />
    </xs:complexType>
  </xs:element>
</xs:schema>

Costruttori

XmlSchemaEnumerationFacet()

Inizializza una nuova istanza della classe XmlSchemaEnumerationFacet.

Proprietà

Annotation

Ottiene o imposta la proprietà annotation.

(Ereditato da XmlSchemaAnnotated)
Id

Ottiene o imposta l'ID di stringa.

(Ereditato da XmlSchemaAnnotated)
IsFixed

Ottiene o imposta informazioni che indicano che l'aspetto è fisso.

(Ereditato da XmlSchemaFacet)
LineNumber

Ottiene o imposta il numero di riga nel file a cui l'elemento schema fa riferimento.

(Ereditato da XmlSchemaObject)
LinePosition

Ottiene o imposta la posizione di riga nel file a cui l'elemento schema fa riferimento.

(Ereditato da XmlSchemaObject)
Namespaces

Ottiene o imposta l'oggetto XmlSerializerNamespaces da utilizzare con questo oggetto schema.

(Ereditato da XmlSchemaObject)
Parent

Ottiene o imposta la classe padre della classe XmlSchemaObject.

(Ereditato da XmlSchemaObject)
SourceUri

Ottiene o imposta la posizione di origine per il file che ha caricato lo schema.

(Ereditato da XmlSchemaObject)
UnhandledAttributes

Ottiene o imposta gli attributi qualificati che non appartengono allo spazio dei nomi di destinazione dello schema corrente.

(Ereditato da XmlSchemaAnnotated)
Value

Ottiene o imposta l'attributo value dell'aspetto.

(Ereditato da XmlSchemaFacet)

Metodi

Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.

(Ereditato da Object)
GetHashCode()

Funge da funzione hash predefinita.

(Ereditato da Object)
GetType()

Ottiene l'oggetto Type dell'istanza corrente.

(Ereditato da Object)
MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.

(Ereditato da Object)
ToString()

Restituisce una stringa che rappresenta l'oggetto corrente.

(Ereditato da Object)

Si applica a