The System.Net Members


System.Net is a large namespace that contains many members. It is far beyond the scope of this chapter to discuss them all, or to discuss all aspects related to Internet programming. (In fact, an entire book is needed to fully cover networking and C#’s support for it in detail.) However, it is worthwhile to list the members of System.Net so that you have an idea of what is available for your use.

The classes defined by System.Net are shown here:

AuthenticationManager

Authorization

Cookie

CookieCollection

CookieContainer

CookieException

CredentialCache

Dns

DnsPermission

DnsPermissionAttribute

DownloadDataCompletedEventArgs (Added by C# 2.0.)

DownloadProgressChangedEventArgs (Added by C# 2.0.)

DownloadStringCompletedEventArgs (Added by C# 2.0.)

EndPoint

EndpointPermission

FileWebRequest

FileWebResponse

FtpWebRequest (Added by C# 2.0.)

FtpWebResponse (Added by C# 2.0.)

HttpListener (Added by C# 2.0.)

HttpListenerBasicIdentity (Added by C# 2.0.)

HttpListenerContext (Added by C# 2.0.)

HttpListenerException (Added by C# 2.0.)

HttpListenerPrefixCollection (Added by C# 2.0.)

HttpListenerRequest (Added by C# 2.0.)

HttpListenerResponse (Added by C# 2.0.)

HttpVersion

HttpWebRequest

HttpWebResponse

IPAddress

IPEndPoint

IPHostEntry

IrDAEndPoint (Added by C# 2.0.)

NetworkCredential

OpenReadCompletedEventArgs (Added by C# 2.0.)

OpenWriteCompletedEventArgs (Added by C# 2.0.)

ProtocolViolationException

ServicePoint

ServicePointManager

SocketAddress

SocketPermission

SocketPermissionAttribute

UploadDataCompletedEventArgs (Added by C# 2.0.)

UploadFileCompletedEventArgs (Added by C# 2.0.)

UploadProgressChangedEventArgs (Added by C# 2.0.)

UploadStringCompletedEventArgs (Added by C# 2.0.)

UploadValuesCompletedEventArgs (Added by C# 2.0.)

WebClient

WebException

WebHeaderCollection

WebPermission

WebPermissionAttribute

WebProxy

WebRequest

WebRequestMethods (Added by C# 2.0.)

WebResponse

System.Net defines the following interfaces:

IAuthenticationModule

ICertificatePolicy

ICredentialPolicy (Added by C# 2.0.)

ICredentials

ICredentialsByHost (Added by C# 2.0.)

IWebProxy

IWebProxyScript (Added by C# 2.0.)

IWebRequestCreate

 

It defines these enumerations:

AuthenticationSchemes (Added by C# 2.0.)

DecompressionMethods (Added by C# 2.0.)

FtpStatusCode (Added by C# 2.0.)

HttpRequestHeader (Added by C# 2.0.)

HttpResponseHeader (Added by C# 2.0.)

HttpStatusCode

NetworkAccess

SecurityProtocolType

TransportType

WebExceptionStatus

  

System.Net also defines several delegates.

Although System.Net defines many members, only a few are needed to accomplish most common Internet programming tasks. At the core of networking are the abstract classes WebRequest and WebResponse. These classes are inherited by classes that support a specific network protocol. (A protocol defines the rules used to send information over a network.) For example, the derived classes that support the standard HTTP protocol are HttpWebRequest and HttpWebResponse.

Even though WebRequest and WebResponse are easy to use, for some tasks, you can employ an even simpler approach based on WebClient. For example, if you only need to upload or download a file, then WebClient is often the best way to accomplish it.




C# 2.0(c) The Complete Reference
C# 2.0: The Complete Reference (Complete Reference Series)
ISBN: 0072262095
EAN: 2147483647
Year: 2006
Pages: 300

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