HttpCacheVaryByHeaders.UserAgent Property
Gets or sets a value indicating whether the origin server adds the User-Agent header to the Vary HTTP header.
[Visual Basic] Public Property UserAgent As Boolean [C#] public bool UserAgent {get; set;} [C++] public: __property bool get_UserAgent(); public: __property void set_UserAgent(bool); [JScript] public function get UserAgent() : Boolean; public function set UserAgent(Boolean);
Property Value
The default value is false. When set to true, this property adds the User-Agent field to the Vary HTTP header sent to the client.
Remarks
The Vary header indicates the request-header fields that the server uses to determine which of multiple cached responses is sent in response to a client request. The User-Agent field specifies that the server selects the response based on the client's user-agent type.
For more information on HTTP cache control headers, see RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1, available on the World Wide Web Consortium's Web site at http://www.w3c.org. See section 14, "Header Field Definitions", for complete details.
Example
This example performs some action only if the UserAgent property is True.
[Visual Basic]
<%
'This example performs some action only if the UserAgent property
'is True.
If Response.Cache.VaryByHeaders.UserAgent = True Then
...
End If
%>
Requirements
Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family
See Also
HttpCacheVaryByHeaders Class | HttpCacheVaryByHeaders Members | System.Web Namespace