HttpListenerResponse.AppendCookie Method
.NET Framework 4.5
Adds the specified Cookie to the collection of cookies for this response.
Namespace: System.Net
Assembly: System (in System.dll)
| Exception | Condition |
|---|---|
| ArgumentNullException | cookie is null. |
The following code example demonstrates adding a cookie to a response
// This example requires the System and System.Net namespaces. public static string NextCustomerID() { // A real-world application would do something more robust // to ensure uniqueness. return DateTime.Now.ToString(); } public static void SimpleListenerCookieExample(string[] prefixes) { // Create a listener. HttpListener listener = new HttpListener(); // Add the prefixes. foreach (string s in prefixes) { listener.Prefixes.Add(s); } listener.IgnoreWriteExceptions = true; listener.Start(); Console.WriteLine("Listening..."); // Note: The GetContext method blocks while waiting for a request. HttpListenerContext context = listener.GetContext(); HttpListenerRequest request = context.Request; string customerID = null; // Did the request come with a cookie? Cookie cookie = request.Cookies["ID"]; if (cookie != null) { customerID=cookie.Value; } if (customerID !=null) { Console.WriteLine("Found the cookie!"); } // Get the response object. HttpListenerResponse response = context.Response; // If they didn't provide a cookie containing their ID, give them one. if (customerID == null) { customerID = NextCustomerID(); Cookie cook = new Cookie("ID", customerID ); response.AppendCookie (cook); } // Construct a response. string responseString = "<HTML><BODY> Hello " + customerID + "!</BODY></HTML>"; byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString); // Get the response stream and write the response to it. response.ContentLength64 = buffer.Length; System.IO.Stream output = response.OutputStream; output.Write(buffer,0,buffer.Length); // You must close the output stream. output.Close(); // Closing the response sends the response to the client. response.Close(); listener.Stop(); }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
