XmlSchemaLengthFacet 类

定义

public ref class XmlSchemaLengthFacet : System::Xml::Schema::XmlSchemaNumericFacet

public class XmlSchemaLengthFacet : System.Xml.Schema.XmlSchemaNumericFacet

type XmlSchemaLengthFacet = class
    inherit XmlSchemaNumericFacet

Public Class XmlSchemaLengthFacet
Inherits XmlSchemaNumericFacet

继承

Object

XmlSchemaObject

XmlSchemaAnnotated

XmlSchemaFacet

XmlSchemaNumericFacet

XmlSchemaLengthFacet

示例

以下示例演示类 XmlSchemaLengthFacet 的使用。

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

class XMLSchemaExamples
{
    public static void Main()
    {

        XmlSchema schema = new XmlSchema();

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

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

        // <xs:length value="5"/>
        XmlSchemaLengthFacet length = new XmlSchemaLengthFacet();
        length.Value = "5";
        restriction.Facets.Add(length);

        ZipCodeType.Content = restriction;

        schema.Items.Add(ZipCodeType);

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

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

        // <xs:attribute name="ZipCode" type="ZipCodeType"/>
        XmlSchemaAttribute ZipCodeAttribute = new XmlSchemaAttribute();
        ZipCodeAttribute.Name = "ZipCode";
        ZipCodeAttribute.SchemaTypeName = new XmlQualifiedName("ZipCodeType", "");
        complexType.Attributes.Add(ZipCodeAttribute);

        element.SchemaType = complexType;
        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="ZipCodeType">
        Dim ZipCodeType As New XmlSchemaSimpleType()
        ZipCodeType.Name = "ZipCodeType"

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

        ' <xs:length value="5"/>
        Dim length As New XmlSchemaLengthFacet()
        length.Value = "5"
        restriction.Facets.Add(length)

        ZipCodeType.Content = restriction

        schema.Items.Add(ZipCodeType)

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

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

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

        element.SchemaType = complexType
        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

为前面的代码示例生成以下 XML 文件。

<?xml version="1.0" encoding="IBM437"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

    <xs:simpleType name="ZipCodeType">
        <xs:restriction base="xs:string">
            <xs:length value="5"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:element name="Address">
        <xs:complexType>
            <xs:attribute name="ZipCode" type="ZipCodeType"/>
        </xs:complexType>
    </xs:element>

</xs:schema>