XmlSchemaWhiteSpaceFacet Class

Represents the World Wide Web Consortium (W3C) whiteSpace facet.

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

public class XmlSchemaWhiteSpaceFacet : XmlSchemaFacet
public class XmlSchemaWhiteSpaceFacet extends XmlSchemaFacet
public class XmlSchemaWhiteSpaceFacet extends XmlSchemaFacet

The XmlSchemaWhiteSpaceFacet class defines how the simpleType value's white space will be treated. The whiteSpace facet value can be one of preserve, replace, or collapse.

The following example shows the use of the XmlSchemaWhiteSpaceFacet class.

using System;
using System.Xml;
using System.Xml.Schema;

class XMLSchemaExamples
    public static void Main()

        XmlSchema schema = new XmlSchema();

        // <xs:simpleType name="NameType">
        XmlSchemaSimpleType NameType = new XmlSchemaSimpleType();
        NameType.Name = "NameType";

        // <xs:restriction base="xs:string">
        XmlSchemaSimpleTypeRestriction restriction = new XmlSchemaSimpleTypeRestriction();
        restriction.BaseTypeName = new XmlQualifiedName("string", "http://www.w3.org/2001/XMLSchema");

        // <xs:whiteSpace value="collapse"/>
        XmlSchemaWhiteSpaceFacet whiteSpace = new XmlSchemaWhiteSpaceFacet();
        whiteSpace.Value = "collapse";

        NameType.Content = restriction;


        // <xs:element name="LastName" type="NameType"/>
        XmlSchemaElement element = new XmlSchemaElement();
        element.Name = "LastName";
        element.SchemaTypeName = new XmlQualifiedName("NameType", "");


        XmlSchemaSet schemaSet = new XmlSchemaSet();
        schemaSet.ValidationEventHandler += new ValidationEventHandler(ValidationCallbackOne);

        XmlSchema compiledSchema = null;

        foreach (XmlSchema schema1 in schemaSet.Schemas())
            compiledSchema = schema1;

        XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());
        nsmgr.AddNamespace("xs", "http://www.w3.org/2001/XMLSchema");
        compiledSchema.Write(Console.Out, nsmgr);

    public static void ValidationCallbackOne(object sender, ValidationEventArgs args)

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="NameType">
		<xs:restriction base="xs:string">
			<xs:whiteSpace value="collapse"/>

	<xs:element name="LastName" type="NameType"/>


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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