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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)

public ref class XmlSchemaMinLengthFacet : public XmlSchemaNumericFacet

The following example shows the use of the XmlSchemaMinLengthFacet class.

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Xml::Schema;

ref class XMLSchemaExamples
	static void ValidationCallbackOne(Object^ sender, ValidationEventArgs^ args)

    static void Main()

        XmlSchema^ schema = gcnew XmlSchema();

        // <xs:simpleType name="ZipCodeType">
        XmlSchemaSimpleType^ ZipCodeType = gcnew XmlSchemaSimpleType();
        ZipCodeType->Name = "ZipCodeType";

        // <xs:restriction base="xs:string">
        XmlSchemaSimpleTypeRestriction^ restriction = gcnew XmlSchemaSimpleTypeRestriction();
        restriction->BaseTypeName = gcnew XmlQualifiedName("string", "");

        // <xs:minLength value="5"/>
        XmlSchemaMinLengthFacet^ minLength = gcnew XmlSchemaMinLengthFacet();
        minLength->Value = "5";

        ZipCodeType->Content = restriction;


        // <xs:element name="Address">
        XmlSchemaElement^ element = gcnew XmlSchemaElement();
        element->Name = "Address";

        // <xs:complexType>
        XmlSchemaComplexType^ complexType = gcnew XmlSchemaComplexType();

        // <xs:attribute name="ZipCode" type="ZipCodeType"/>
        XmlSchemaAttribute^ ZipCodeAttribute = gcnew XmlSchemaAttribute();
        ZipCodeAttribute->Name = "ZipCode";
        ZipCodeAttribute->SchemaTypeName = gcnew XmlQualifiedName("ZipCodeType", "");

        element->SchemaType = complexType;


        XmlSchemaSet^ schemaSet = gcnew XmlSchemaSet();
        schemaSet->ValidationEventHandler += gcnew ValidationEventHandler(ValidationCallbackOne);

        XmlSchema^ compiledSchema = nullptr;

        for each (XmlSchema^ schema1 in schemaSet->Schemas())
            compiledSchema = schema1;

        XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager(gcnew NameTable());
        nsmgr->AddNamespace("xs", "");
        compiledSchema->Write(Console::Out, nsmgr);

int main()
	return 0;

The following XML file is generated for this code example.

<?xml version="1.0" encoding="IBM437"?>
<xs:schema xmlns:xs="">

	<xs:simpleType name="ZipCodeType">
		<xs:restriction base="xs:string">
			<xs:minLength value="5"/>

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

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 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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0