XmlSchemaAttributeGroup Class
Assembly: System.Xml (in system.xml.dll)
An attribute group can be defined only as a child of the schema element. In this case, the name attribute must be present and contain the attribute, attributeGroup, or anyAttribute elements that make up the attribute group. When a complexType or an attributeGroup element includes an attribute group, the ref attribute must be present and the name attribute is not allowed.
The following example creates the attributeGroup element.
Option Strict On Option Explicit On Imports System Imports System.Xml Imports System.Xml.Schema Class XMLSchemaExamples Public Shared Sub Main() Dim schema As New XmlSchema() ' <xs:attributeGroup name="myAttributeGroup"> Dim myAttributeGroup As New XmlSchemaAttributeGroup() schema.Items.Add(myAttributeGroup) myAttributeGroup.Name = "myAttributeGroup" ' <xs:attribute name="someattribute1" type="xs:integer"/> Dim someattribute1 As New XmlSchemaAttribute() myAttributeGroup.Attributes.Add(someattribute1) someattribute1.Name = "someattribute1" someattribute1.SchemaTypeName = New XmlQualifiedName("integer", "http://www.w3.org/2001/XMLSchema") ' <xs:attribute name="someattribute2" type="xs:string"/> Dim someattribute2 As New XmlSchemaAttribute() myAttributeGroup.Attributes.Add(someattribute2) someattribute2.Name = "someattribute2" someattribute2.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema") ' <xs:complexType name="myElementType"> Dim myElementType As New XmlSchemaComplexType() schema.Items.Add(myElementType) myElementType.Name = "myElementType" ' <xs:attributeGroup ref="myAttributeGroup"/> Dim myAttributeGroupRef As New XmlSchemaAttributeGroupRef() myElementType.Attributes.Add(myAttributeGroupRef) myAttributeGroupRef.RefName = New XmlQualifiedName("myAttributeGroup") ' <xs:attributeGroup name="myAttributeGroupA"> Dim myAttributeGroupA As New XmlSchemaAttributeGroup() schema.Items.Add(myAttributeGroupA) myAttributeGroupA.Name = "myAttributeGroupA" ' <xs:attribute name="someattribute10" type="xs:integer"/> Dim someattribute10 As New XmlSchemaAttribute() myAttributeGroupA.Attributes.Add(someattribute10) someattribute10.Name = "someattribute10" someattribute10.SchemaTypeName = New XmlQualifiedName("integer", "http://www.w3.org/2001/XMLSchema") ' <xs:attribute name="someattribute11" type="xs:string"/> Dim someattribute11 As New XmlSchemaAttribute() myAttributeGroupA.Attributes.Add(someattribute11) someattribute11.Name = "someattribute11" someattribute11.SchemaTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema") ' <xs:attributeGroup name="myAttributeGroupB"> Dim myAttributeGroupB As New XmlSchemaAttributeGroup() schema.Items.Add(myAttributeGroupB) myAttributeGroupB.Name = "myAttributeGroupB" ' <xs:attribute name="someattribute20" type="xs:date"/> Dim someattribute20 As New XmlSchemaAttribute() myAttributeGroupB.Attributes.Add(someattribute20) someattribute20.Name = "someattribute20" someattribute20.SchemaTypeName = New XmlQualifiedName("date", "http://www.w3.org/2001/XMLSchema") ' <xs:attributeGroup ref="myAttributeGroupA"/> Dim myAttributeGroupRefA As New XmlSchemaAttributeGroupRef() myAttributeGroupB.Attributes.Add(myAttributeGroupRefA) myAttributeGroupRefA.RefName = New XmlQualifiedName("myAttributeGroupA") 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 'Main Public Shared Sub ValidationCallbackOne(ByVal sender As Object, ByVal args As ValidationEventArgs) Console.WriteLine(args.Message) End Sub 'ValidationCallbackOne End Class 'XMLSchemaExamples
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:attributeGroup name="myAttributeGroup">
<xs:attribute name="someattribute1" type="xs:integer"/>
<xs:attribute name="someattribute2" type="xs:string"/>
</xs:attributeGroup>
<xs:complexType name="myElementType">
<xs:attributeGroup ref="myAttributeGroup"/>
</xs:complexType>
<xs:attributeGroup name="myAttributeGroupA">
<xs:attribute name="someattribute10" type="xs:integer"/>
<xs:attribute name="someattribute11" type="xs:string"/>
</xs:attributeGroup>
<xs:attributeGroup name="myAttributeGroupB">
<xs:attribute name="someattribute20" type="xs:date"/>
<xs:attributeGroup ref="myAttributeGroupA"/>
</xs:attributeGroup>
</xs:schema>
System.Xml.Schema.XmlSchemaObject
System.Xml.Schema.XmlSchemaAnnotated
System.Xml.Schema.XmlSchemaAttributeGroup
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.