XmlSchemaWhiteSpaceFacet Classe

Definição

public ref class XmlSchemaWhiteSpaceFacet : System::Xml::Schema::XmlSchemaFacet

public class XmlSchemaWhiteSpaceFacet : System.Xml.Schema.XmlSchemaFacet

type XmlSchemaWhiteSpaceFacet = class
    inherit XmlSchemaFacet

Public Class XmlSchemaWhiteSpaceFacet
Inherits XmlSchemaFacet

Herança

Object

XmlSchemaObject

XmlSchemaAnnotated

XmlSchemaFacet

XmlSchemaWhiteSpaceFacet

Exemplos

O exemplo seguinte mostra a utilização da XmlSchemaWhiteSpaceFacet classe.

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

class XMLSchemaExamples
{
    public static void Main()
    {

        XmlSchema schema = new XmlSchema();

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

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

        // <xs:whiteSpace value="collapse"/>
        XmlSchemaWhiteSpaceFacet whiteSpace = new XmlSchemaWhiteSpaceFacet();
        whiteSpace.Value = "collapse";
        restriction.Facets.Add(whiteSpace);

        NameType.Content = restriction;

        schema.Items.Add(NameType);

        // <xs:element name="LastName" type="NameType"/>
        XmlSchemaElement element = new XmlSchemaElement();
        element.Name = "LastName";
        element.SchemaTypeName = new XmlQualifiedName("NameType", "");

        schema.Items.Add(element);

        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);
    }
}

Imports System.Xml
Imports System.Xml.Schema

Class XMLSchemaExamples
    Public Shared Sub Main()

        Dim schema As New XmlSchema()

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

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

        ' <xs:whiteSpace value="collapse"/>
        Dim whiteSpace As New XmlSchemaWhiteSpaceFacet()
        whiteSpace.Value = "collapse"
        restriction.Facets.Add(whiteSpace)

        NameType.Content = restriction

        schema.Items.Add(NameType)

        ' <xs:element name="LastName" type="NameType"/>
        Dim element As New XmlSchemaElement()
        element.Name = "LastName"
        element.SchemaTypeName = New XmlQualifiedName("NameType", "")

        schema.Items.Add(element)

        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 seguinte ficheiro XML 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:simpleType name="NameType">
        <xs:restriction base="xs:string">
            <xs:whiteSpace value="collapse"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:element name="LastName" type="NameType"/>
</xs:schema>

Observações

A XmlSchemaWhiteSpaceFacet classe define como o espaço em branco do valor simpleType será tratado. O whiteSpace valor facetar pode ser um de preserve, replace, ou collapse.