This attribute is not required to create a web service, but it should
be used before a web service is deployed to specify a unique XML
namespace and allow clients to distinguish your web service from
others on the Web. By default, if you do not use this attribute, the
default namespace http://tempuri.org/ is used.
Namespaces look like URLs, but they do not actually need to
correspond to valid locations on the Web. In a web service, the XML
namespace is used to uniquely identify parts of the Service
Description (WSDL) file that specifically pertain to the web service.
The Name property identifies the local portion of
the XML qualified name, which will be the web service class name by
default. Elements of the WSDL contract that are specific to WSDL use
the http://schemas.xmlsoap.org/wsdl/ namespace.
Ideally, you should use a namespace that you control, such as your
company's web site address. This XML namespace
should not be confused with the .NET namespace used programmatically
by clients. For more information on XML qualified names, see
http://www.w3.org/TR/REC-xml-names.
You can also set a Description property, which
contains information about your web service that will be displayed in
automatically generated description documents and the Internet
Explorer test page.
public sealed class WebServiceAttribute : Attribute {
// Public Constructors
public WebServiceAttribute( );
// Public Static Fields
public const string DefaultNamespace; // =http://tempuri.org/
// Public Instance Properties
public string Description{set; get; }
public string Name{set; get; }
public string Namespace{set; get; }
}
System.Attribute 
