XmlSchemaMaxLengthFacet Class
Represents the maxLength element from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to specify a restriction on the maximum length of the data value of a simpleType element. The length must be less than the value of the maxLength element.
Assembly: System.Xml (in System.Xml.dll)
The following example shows the use of the XmlSchemaMaxLengthFacet class.
Imports System 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:maxLength value="10"/> Dim maxLength As New XmlSchemaMaxLengthFacet() maxLength.Value = "10" restriction.Facets.Add(maxLength) 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
The following XML file is generated for the preceding code example.
<?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:maxLength value="10"/> </xs:restriction> </xs:simpleType> <xs:element name="Address"> <xs:complexType> <xs:attribute name="ZipCode" type="ZipCodeType"/> </xs:complexType> </xs:element> </xs:schema>
System.Xml.Schema.XmlSchemaObject
System.Xml.Schema.XmlSchemaAnnotated
System.Xml.Schema.XmlSchemaFacet
System.Xml.Schema.XmlSchemaNumericFacet
System.Xml.Schema.XmlSchemaMaxLengthFacet
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.