XmlSchemaAnnotation Class
Represents the World Wide Web Consortium (W3C) annotation element.
Assembly: System.Xml (in System.Xml.dll)
The XmlSchemaAnnotation type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | Id | Gets or sets the string id. |
![]() ![]() | Items | Gets the Items collection that is used to store the appinfo and documentation child elements. |
![]() ![]() | LineNumber | Gets or sets the line number in the file to which the schema element refers. (Inherited from XmlSchemaObject.) |
![]() ![]() | LinePosition | Gets or sets the line position in the file to which the schema element refers. (Inherited from XmlSchemaObject.) |
![]() ![]() | Namespaces | Gets or sets the XmlSerializerNamespaces to use with this schema object. (Inherited from XmlSchemaObject.) |
![]() ![]() | Parent | Gets or sets the parent of this XmlSchemaObject. (Inherited from XmlSchemaObject.) |
![]() ![]() | SourceUri | Gets or sets the source location for the file that loaded the schema. (Inherited from XmlSchemaObject.) |
![]() ![]() | UnhandledAttributes | Gets or sets the qualified attributes that do not belong to the schema's target namespace. |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
An annotation element can contain one or more XmlSchemaAppInfo instances (information for applications) and XmlSchemaDocumentation instances (comments or text for humans).
An annotation is used to store extra information about the schema or its elements. These notes are specified for human consumption, xs:documentation, or by software, xs:appinfo. Annotation can be the first element of most schema elements or anywhere under the schema element.
The following example creates the annotation element.
Option Explicit On Option Strict On Imports System Imports System.Xml Imports System.Xml.Schema Class XMLSchemaExamples Public Shared Sub Main() Dim schema As New XmlSchema() ' <xs:simpleType name="northwestStates"> Dim simpleType As New XmlSchemaSimpleType() simpleType.Name = "northwestStates" schema.Items.Add(simpleType) ' <xs:annotation> Dim annNorthwestStates As New XmlSchemaAnnotation() simpleType.Annotation = annNorthwestStates ' <xs:documentation>States in the Pacific Northwest of US</xs:documentation> Dim docNorthwestStates As New XmlSchemaDocumentation() annNorthwestStates.Items.Add(docNorthwestStates) docNorthwestStates.Markup = TextToNodeArray("States in the Pacific Northwest of US") ' <xs:restriction base="xs:string"> Dim restriction As New XmlSchemaSimpleTypeRestriction() simpleType.Content = restriction restriction.BaseTypeName = New XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema") ' <xs:enumeration value='WA'> Dim enumerationWA As New XmlSchemaEnumerationFacet() restriction.Facets.Add(enumerationWA) enumerationWA.Value = "WA" ' <xs:annotation> Dim annWA As New XmlSchemaAnnotation() enumerationWA.Annotation = annWA ' <xs:documentation>Washington</documentation> Dim docWA As New XmlSchemaDocumentation() annWA.Items.Add(docWA) docWA.Markup = TextToNodeArray("Washington") ' <xs:enumeration value='OR'> Dim enumerationOR As New XmlSchemaEnumerationFacet() restriction.Facets.Add(enumerationOR) enumerationOR.Value = "OR" ' <xs:annotation> Dim annOR As New XmlSchemaAnnotation() enumerationOR.Annotation = annOR ' <xs:documentation>Oregon</xs:documentation> Dim docOR As New XmlSchemaDocumentation() annOR.Items.Add(docOR) docOR.Markup = TextToNodeArray("Oregon") ' <xs:enumeration value='ID'> Dim enumerationID As New XmlSchemaEnumerationFacet() restriction.Facets.Add(enumerationID) enumerationID.Value = "ID" ' <xs:annotation> Dim annID As New XmlSchemaAnnotation() enumerationID.Annotation = annID ' <xs:documentation>Idaho</xs:documentation> Dim docID As New XmlSchemaDocumentation() annID.Items.Add(docID) docID.Markup = TextToNodeArray("Idaho") 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 Public Shared Function TextToNodeArray(ByVal text As String) As XmlNode() Dim doc As New XmlDocument() Return New XmlNode(0) {doc.CreateTextNode(text)} End Function 'TextToNodeArray 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:simpleType name="northwestStates">
<xs:annotation>
<xs:documentation>States in the Pacific Northwest of US</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:enumeration value='WA'>
<xs:annotation>
<xs:documentation>Washington</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='OR'>
<xs:annotation>
<xs:documentation>Oregon</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='ID'>
<xs:annotation>
<xs:documentation>Idaho</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
</xs:schema>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.



