When overridden in a descendant class, gets or sets the collection of header name/value pairs associated with the request.
Assembly: System (in System.dll)
Any attempt is made to get or set the property, when the property is not overridden in a descendant class.
The property contains a WebHeaderCollection instance containing the header information to send to the Internet resource.
The WebRequest class is an abstract class. The actual behavior of WebRequest instances at run time is determined by the descendant class returned by the WebRequest.Create method. For more information about default values and exceptions, see the documentation for the descendant classes, such as HttpWebRequest and FileWebRequest.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.