method

url

.Host

.PathBase

.Path

.Query

foreach (var key in Request.Query.Keys) {
   string value = Request.Query[key]; // string value; if multiple then values are comma-separated

   var valueArray = Request.Query[key].ToArray();
   foreach (var s in valueArray) {
       string item = s; // string value
   }
}

.QueryString

properties

methods

extensionmethods

.RouteValues

.Form

.Cookies

.Headers