Namespace: System.Net

The System.Net namespace provides a simple programming interface for many of the protocols used on networks today. The WebRequest and WebResponse classes form the basis of what are called pluggable protocols, an implementation of network services that enables you to develop applications that use Internet resources without worrying about the specific details of the individual protocols.

Class	Description
class AuthenticationManager	Manages the authentication modules called during the client authentication process.
class Authorization	Contains an authentication message for an Internet server.
class Cookie	Provides a set of properties and methods used to manage cookies. This class cannot be inherited.
class CookieCollection	Provides a collection container for instances of the Cookie class.
class CookieContainer	Provides a container for a collection of CookieCollection objects.
class CookieException	The exception that is thrown when an error is made adding a Cookie to a CookieContainer.
class CredentialCache	Provides storage for multiple credentials.
class Dns	Provides simple domain name resolution functionality.
class DnsPermission	Controls rights to access Domain Name System (DNS) servers on the network.
class DnsPermissionAttribute	Specifies permission to request information from Domain Name Servers.
class EndPoint	Identifies a network address. This is an class.
class EndpointPermission	Defines an endpoint that is authorized by a SocketPermission instance.
class FileWebRequest	Provides a file system implementation of the WebRequest class.
class FileWebResponse	Provides a file system implementation of the WebResponse class.
class GlobalProxySelection	Contains a global default proxy instance for all HTTP requests.
class HttpVersion	Defines the HTTP version numbers supported by the HttpWebRequest and HttpWebResponse classes.
class HttpWebRequest	Provides an HTTP-specific implementation of the WebRequest class.
class HttpWebResponse	Provides an HTTP-specific implementation of the WebResponse class.
class IPAddress	Provides an Internet Protocol (IP) address.
class IPEndPoint	Represents a network endpoint as an IP address and a port number.
class IPHostEntry	Provides a container class for Internet host address information.
class NetworkCredential	Provides credentials for password-based authentication schemes such as basic, digest, NTLM, and Kerberos authentication.
class ProtocolViolationException	The exception that is thrown when an error is made while using a network protocol.
class ServicePoint	Provides connection management for HTTP connections.
class ServicePointManager	Manages the collection of ServicePoint instances.
class SocketAddress	Stores serialized information from EndPoint derived classes.
class SocketPermission	Controls rights to make or accept connections on a transport address.
class SocketPermissionAttribute	Specifies security actions to control Socket connections. This class cannot be inherited.
class WebClient	Provides common methods for sending data to and receiving data from a resource identified by a URI. This class cannot be inherited.
class WebException	The exception that is thrown when an error occurs while accessing the network through a pluggable protocol.
class WebHeaderCollection	Contains protocol headers associated with a request or response.
class WebPermission	Controls rights to access an HTTP Internet resources.
class WebPermissionAttribute	Specifies permission to access Internet resources. This class cannot be inherited.
class WebProxy	Contains HTTP proxy settings for the WebRequest class.
class WebRequest	Makes a request to a Uniform Resource Identifier (URI). This is an class.
class WebResponse	Provides a response from a Uniform Resource Identifier (URI). This is an class.

Interface	Description
interface IAuthenticationModule	Provides the base authentication interface for Web client authentication modules.
interface ICredentials	Provides the base authentication interface for retrieving credentials for Web client authentication.
interface IWebProxy	Provides the base interface for implementation of proxy access for the WebRequest class.
interface IWebRequestCreate	Provides the base interface for creating WebRequest instances.

Enumeration	Description
enumeration HttpStatusCode	Contains the values of status codes defined for HTTP.
enumeration NetworkAccess	Specifies network access permissions.
enumeration TransportType	Defines transport types for the SocketPermission and Socket classes.
enumeration WebExceptionStatus	Defines status codes for the WebException class.

Namespace: System.Net

Members of System.Net Namespace