Question

I’m writing an aspx page which has to send an http request to a known url with some parameters whose values are retrieved at runtime, then receive the response in xml form.
For example, the user presses the ‘order’ button so I have to send its order to http://foobar/xyz.do with parameter ‘abc’ being ‘123’ and parameter ‘def’ being ‘456’, then receive the response which could be something like < error code=332 > wtf?! < /error >’.
I don’t even know where to start 😉

Cheers

Answer 1

You can use WebRequest class in the event handler of your order button. In other words, when the order button is pressed, you might run a code similar to this:

WebRequest request = WebRequest.Create("create your URL before this, and append parameters to it");
WebResponse response = request.GetResponse();
string responseBody = new StreamReader(response.GetResponseStream()).ReadToEnd();

Now, if the response is XML, you should use something like LINQ to XML or simply XmlDocument related classes to parse it. Otherwise, do appropriately.