XmlSchemaMinLengthFacet Class

Represents the minLength element from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to specify a restriction on the minimum length of the data value of a simpleType element. The length must be greater than the value of the minLength element.

Namespace: System.Xml.Schema
Assembly: System.Xml (in system.xml.dll)

'Declaration
Public Class XmlSchemaMinLengthFacet
	Inherits XmlSchemaNumericFacet
'Usage
Dim instance As XmlSchemaMinLengthFacet

public class XmlSchemaMinLengthFacet extends XmlSchemaNumericFacet
public class XmlSchemaMinLengthFacet extends XmlSchemaNumericFacet

The following example shows the use of the XmlSchemaMinLengthFacet 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:minLength value="5"/>
        Dim minLength As New XmlSchemaMinLengthFacet()
        minLength.Value = "5"
        restriction.Facets.Add(minLength)

        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 this 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:minLength value="5"/>
		</xs:restriction>
	</xs:simpleType>

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

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