Request.QueryString NameValueCollection GET variables sent with this request
Request.Form NameValueCollection POST variables sent with this request
Request.Cookies HttpCookieCollection Cookies sent by the browser with this request
Request.Http Method string The HTTP method (verb, such as GET or POST) used for this request
Request.Headers NameValueCollection The full set of HTTP headers sent with this request
Request.Url Uri The URL requested
Request.UserHostAddress string The IP address of the user making this request
RouteData.Route RouteBase The chosen RouteTable.Routes entry for this request
RouteData.Values RouteValueDictionary Active route parameters (either extractedfrom the URL or default values)
HttpContext.Application HttpApplicationStateBase Application state store
HttpContext.Cache Cache Application cache store
HttpContext.Items IDictionary State store for the current request
HttpContext.Session HttpSessionStateBase State store for the visitor’s session
User IPrincipal Authentication information about the logged-in user
TempData TempDataDictionary Temporary data items stored for the current user