XmlSchemaPatternFacet Class
Specifies a restriction on the value entered for a simpleType element. The pattern is made up of a regular expression. Represents the World Wide Web Consortium (W3C) pattern facet.
For a list of all members of this type, see XmlSchemaPatternFacet Members.
System.Object
System.Xml.Schema.XmlSchemaObject
System.Xml.Schema.XmlSchemaAnnotated
System.Xml.Schema.XmlSchemaFacet
System.Xml.Schema.XmlSchemaPatternFacet
[Visual Basic] Public Class XmlSchemaPatternFacet Inherits XmlSchemaFacet [C#] public class XmlSchemaPatternFacet : XmlSchemaFacet [C++] public __gc class XmlSchemaPatternFacet : public XmlSchemaFacet [JScript] public class XmlSchemaPatternFacet extends XmlSchemaFacet
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Example
[Visual Basic, C#, C++] The following example shows the use of the XmlSchemaPatternFacet class.
[Visual Basic] 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:pattern value="[0-9]{5}(-[0-9]{4})?"/> Dim pattern as New XmlSchemaPatternFacet() pattern.Value = "[0-9]{5}(-[0-9]{4})?" restriction.Facets.Add(pattern) 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) schema.Compile(AddressOf ValidationCallbackOne) Dim nsmgr As New XmlNamespaceManager(New NameTable()) nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema") schema.Write(Console.Out, nsmgr) End Sub Public Shared Sub ValidationCallbackOne(sender as object, args as ValidationEventArgs) Console.WriteLine(args.Message) End Sub End Class [C#] 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:pattern value="[0-9]{5}(-[0-9]{4})?"/> XmlSchemaPatternFacet pattern = new XmlSchemaPatternFacet(); pattern.Value = "[0-9]{5}(-[0-9]{4})?"; restriction.Facets.Add(pattern); 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); schema.Compile(new ValidationEventHandler(ValidationCallbackOne)); XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable()); nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema"); schema.Write(Console.Out, nsmgr); } public static void ValidationCallbackOne(object sender, ValidationEventArgs args) { Console.WriteLine(args.Message); } } [C++] #using <mscorlib.dll> #using <System.Xml.dll> using namespace System; using namespace System::Xml; using namespace System::Xml::Schema; __gc class XMLSchemaExamples { public: static void ValidationCallbackOne(Object* sender, ValidationEventArgs * args) { Console::WriteLine(args -> Message); } }; int main() { XmlSchema* schema = new XmlSchema(); // <xs:simpleType name=S"ZipCodeType"> XmlSchemaSimpleType* ZipCodeType = new XmlSchemaSimpleType(); ZipCodeType -> Name = S"ZipCodeType"; // <xs:restriction base=S"xs:String*"> XmlSchemaSimpleTypeRestriction* restriction = new XmlSchemaSimpleTypeRestriction(); restriction -> BaseTypeName = new XmlQualifiedName(S"string", S"http://www.w3.org/2001/XMLSchema"); // <xs:pattern value=S"->[0-9] {5}(-->[0-9] {4})?"/> XmlSchemaPatternFacet* pattern = new XmlSchemaPatternFacet(); pattern -> Value = S"[0-9]{5}(-[0-9]{4})?"; restriction -> Facets->Add(pattern); ZipCodeType -> Content = restriction; schema -> Items->Add(ZipCodeType); // <xs:element name=S"Address"> XmlSchemaElement* element = new XmlSchemaElement(); element -> Name = S"Address"; // <xs:complexType> XmlSchemaComplexType* complexType = new XmlSchemaComplexType(); // <xs:attribute name=S"ZipCode" type=S"ZipCodeType"/> XmlSchemaAttribute* ZipCodeAttribute = new XmlSchemaAttribute(); ZipCodeAttribute -> Name = S"ZipCode"; ZipCodeAttribute -> SchemaTypeName = new XmlQualifiedName(S"ZipCodeType", S""); complexType -> Attributes->Add(ZipCodeAttribute); element -> SchemaType = complexType; schema -> Items->Add(element); schema -> Compile(new ValidationEventHandler(schema, XMLSchemaExamples::ValidationCallbackOne)); XmlNamespaceManager* nsmgr = new XmlNamespaceManager(new NameTable()); nsmgr -> AddNamespace(S"xs", S"http://www.w3.org/2001/XMLSchema"); schema -> Write(Console::Out, nsmgr); }
[Visual Basic, C#, C++] 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:pattern value="[0-9]{5}(-[0-9]{4})?"/>
</xs:restriction>
</xs:simpleType>
<xs:element name="Address">
<xs:complexType>
<xs:attribute name="ZipCode" type="ZipCodeType"/>
</xs:complexType>
</xs:element>
</xs:schema>
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
in the upper-left corner of the page.
Requirements
Namespace: System.Xml.Schema
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: System.Xml (in System.Xml.dll)