WebRequest.RegisterPrefix Method (System.Net)

.NET Framework Class Library

WebRequest..::.RegisterPrefix Method

Registers a WebRequest descendant for the specified URI.

Namespace: System.Net
Assembly: System (in System.dll)

Syntax

Visual Basic (Declaration)

Public Shared Function RegisterPrefix ( _
    prefix As String, _
    creator As IWebRequestCreate _
) As Boolean

Visual Basic (Usage)

Dim prefix As String
Dim creator As IWebRequestCreate
Dim returnValue As Boolean

returnValue = WebRequest.RegisterPrefix(prefix, _
    creator)

public static bool RegisterPrefix(
    string prefix,
    IWebRequestCreate creator
)

Visual C++

public:
static bool RegisterPrefix(
    String^ prefix, 
    IWebRequestCreate^ creator
)

JScript

public static function RegisterPrefix(
    prefix : String, 
    creator : IWebRequestCreate
) : boolean

Parameters

prefix: Type: System..::.String
The complete URI or URI prefix that the WebRequest descendant services.

creator: Type: System.Net..::.IWebRequestCreate
The create method that the WebRequest calls to create the WebRequest descendant.

Return Value

Type: System..::.Boolean
true if registration is successful; otherwise, false.

Exceptions

Exception	Condition
ArgumentNullException	prefix is nullNothingnullptra null reference (Nothing in Visual Basic) -or- creator is nullNothingnullptra null reference (Nothing in Visual Basic).

Exception

Condition

ArgumentNullException

prefix is nullNothingnullptra null reference (Nothing in Visual Basic)

-or-

creator is nullNothingnullptra null reference (Nothing in Visual Basic).

Remarks

The RegisterPrefix method registers WebRequest descendants to service requests. WebRequest descendants are typically registered to handle a specific protocol, such HTTP or FTP, but can be registered to handle a request to a specific server or path on a server.

Duplicate prefixes are not allowed. RegisterPrefix returns false if an attempt is made to register a duplicate prefix.

Note:
The HttpWebRequest class is registered to service requests for HTTP and HTTPS schemes by default. Attempts to register a different WebRequest descendant for these schemes will fail.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

Reference

WebRequest Class

WebRequest Members

System.Net Namespace