XmlSchemaAttribute Classe

Definição

public ref class XmlSchemaAttribute : System::Xml::Schema::XmlSchemaAnnotated

public class XmlSchemaAttribute : System.Xml.Schema.XmlSchemaAnnotated

type XmlSchemaAttribute = class
    inherit XmlSchemaAnnotated

Public Class XmlSchemaAttribute
Inherits XmlSchemaAnnotated

Herança

Object

XmlSchemaObject

XmlSchemaAnnotated

XmlSchemaAttribute

Exemplos

O exemplo a seguir cria o attribute elemento.

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

class XMLSchemaExamples
{
    public static void Main()
    {

        XmlSchema schema = new XmlSchema();

        // <xs:attribute name="mybaseattribute">
        XmlSchemaAttribute attributeBase = new XmlSchemaAttribute();
        schema.Items.Add(attributeBase);
        attributeBase.Name = "mybaseattribute";

        // <xs:simpleType>
        XmlSchemaSimpleType simpleType = new XmlSchemaSimpleType();
        attributeBase.SchemaType = simpleType;

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

        // <xs:maxInclusive value="1000"/>
        XmlSchemaMaxInclusiveFacet maxInclusive = new XmlSchemaMaxInclusiveFacet();
        restriction.Facets.Add(maxInclusive);
        maxInclusive.Value = "1000";

        // <xs:complexType name="myComplexType">
        XmlSchemaComplexType complexType = new XmlSchemaComplexType();
        schema.Items.Add(complexType);
        complexType.Name = "myComplexType";

        // <xs:attribute ref="mybaseattribute"/>
        XmlSchemaAttribute attributeBaseRef = new XmlSchemaAttribute();
        complexType.Attributes.Add(attributeBaseRef);
        attributeBaseRef.RefName = new XmlQualifiedName("mybaseattribute");

        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 Explicit On
Option Strict On

Imports System.Xml
Imports System.Xml.Schema

Class XMLSchemaExamples
    Public Shared Sub Main()
        Dim schema As New XmlSchema()

        ' <xs:attribute name="mybaseattribute">
        Dim attributeBase As New XmlSchemaAttribute()
        schema.Items.Add(attributeBase)
        attributeBase.Name = "mybaseattribute"

        ' <xs:simpleType>
        Dim simpleType As New XmlSchemaSimpleType()
        attributeBase.SchemaType = simpleType

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

        ' <xs:maxInclusive value="1000"/>
        Dim maxInclusive As New XmlSchemaMaxInclusiveFacet()
        restriction.Facets.Add(maxInclusive)
        maxInclusive.Value = "1000"

        ' <xs:complexType name="myComplexType">
        Dim complexType As New XmlSchemaComplexType()
        schema.Items.Add(complexType)
        complexType.Name = "myComplexType"

        ' <xs:attribute ref="mybaseattribute"/>
        Dim attributeBaseRef As New XmlSchemaAttribute()
        complexType.Attributes.Add(attributeBaseRef)
        attributeBaseRef.RefName = New XmlQualifiedName("mybaseattribute")

        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

O arquivo XML a seguir é gerado para o exemplo de código anterior.

<?xml version="1.0" encoding="IBM437"?>
<xs:schema  xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:attribute name="mybaseattribute">
        <xs:simpleType>
            <xs:restriction base="xs:integer">
                <xs:maxInclusive value="1000" />
            </xs:restriction>
        </xs:simpleType>
    </xs:attribute>
    <xs:complexType name="myComplexType">
        <xs:attribute ref="mybaseattribute" />
    </xs:complexType>
</xs:schema>

Comentários

As declarações de atributo podem estar presentes como elementos filho do schema elemento (com escopo global) ou dentro de definições de tipo complexas. Para tipos complexos, as declarações de atributo podem estar presentes como declarações locais ou referências a atributos com escopo global. As declarações de atributo global e local têm o atributo de tipo opcional que se refere a um tipo simples existente. Se o atributo de tipo opcional não for usado, a declaração de atributo (global ou local) deverá definir um tipo simples local.