Value

A System.Net.WebHeaderCollection containing the name/value pairs of the headers for the current instance. [Edit]

Exceptions

Type	Reason
InvalidOperationException	A set operation was requested but data has already been written to the request data stream. [Edit]

Remarks

The following table lists the HTTP headers that cannot be set using the collection returned by this property.

Header	Set by
Accept	HttpWebRequest.Accept .
Connection	HttpWebRequest.Connection . HttpWebRequest.KeepAlive.
Content-Length	HttpWebRequest.ContentLength.
Content-Type	HttpWebRequest.ContentType.
Expect	HttpWebRequest.Expect.
Date	Set by the system to the current date.
Host	Set by the system to the current host information.
Range	HttpWebRequest.AddRange(int, int) .
Referer	HttpWebRequest.Referer.
Transfer-Encoding	HttpWebRequest.TransferEncoding. HttpWebRequest.SendChunked.
User-Agent	HttpWebRequest.UserAgent.

Note: This property overrides WebRequest.Headers.

[Edit]

Requirements

Namespace: System.Net
Assembly: System (in System.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0