NameTable Class

Implements a single-threaded XmlNameTable.

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

public class NameTable : XmlNameTable
public class NameTable extends XmlNameTable
public class NameTable extends XmlNameTable

Several classes, such as XmlDocument and XmlReader, use the NameTable class internally to store attribute and element names. When an element or attribute name occurs multiple times in an XML document, it is stored only once in the NameTable.

The names are stored as common language runtime (CLR) object types. This enables you to do object comparisons on these strings rather than a more expensive string comparison. These string objects are referred to as atomized strings.

The following example compares two element names.

NameTable nt = new NameTable();
object book = nt.Add("book");
object price = nt.Add("price");

// Create the reader.
XmlReaderSettings settings = new XmlReaderSettings();
settings.NameTable = nt;
XmlReader reader = XmlReader.Create("books.xml", settings);


 if (System.Object.ReferenceEquals(book, reader.Name)) {
     // Do additional processing.

//Create the reader.
XmlTextReader rdr = new XmlTextReader("book.xml");
NameTable nt = new NameTable();
String name = nt.Add("book");

while (rdr.Read()) {
if (rdr.get_NameTable().Get("book").Equals(name)) {

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, 1.0