How to call a URL(script) after post

Hi there, got following problem: I want to upload a large amount of image data to the server. Once this is done, I need to start a script on the server to process the data (in this case, it's python). I could start the script with a parameterized call. So my question is, how would I build the url and send it automatically after the upload is complete. I'm using if(IsPost) and a counter to upload the images. I think I can not use the action parameter in the form tag. Am i right?

Thanks for the help.

Re: How to call a URL(script) after post

Can't you just use a redirect from the code behind?

Response.Redirect("script.py");

Re: How to call a URL(script) after post

I have to send a few parameters from user-input to the script. I think that's not possible with the redirect.

Re: How to call a URL(script) after post

If script accepts parameters from a query string, use "script.py?x=1&y=2". In other case, use HTTP POST

string url = "http://...";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
string proxy = null;

string data = String.Format("parameter1={0}&parameter2={1}&parameter3={2}", parameter1, parameter2, parameter3);
byte[] buffer = Encoding.UTF8.GetBytes(data);

req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = buffer.Length;
req.Proxy = new WebProxy(proxy, true); // ignore for local addresses
req.CookieContainer = new CookieContainer(); // enable cookies

Stream reqst = req.GetRequestStream(); // add form data to request stream
reqst.Write(buffer, 0, buffer.Length);
reqst.Flush();
reqst.Close();

HttpWebResponse res = (HttpWebResponse)req.GetResponse();

Stream resst = res.GetResponseStream();
StreamReader sr = new StreamReader(resst);
string response = sr.ReadToEnd();

Hope this helps.

Re: How to call a URL(script) after post

Thank you for your help. I'm new in programming, so sorry for my questions. I got an error in the following three lines: (the name encoding is not available in the actual context...)

byte[] buffer = Encoding.UTF8.GetBytes(data);

req.ContentLength = buffer.Length;

reqst.Write(buffer, 0, buffer.Length);

Is there a possibility to set up a simple site to test, how the post gets submitted?

Re: How to call a URL(script) after post

Please visit this link

http://msdn.microsoft.com/en-us/magazine/cc163941.aspx

Re: How to call a URL(script) after post

You need to add system.text namespace in your class.

using System.Text;

Regarding test script. Suppose you're posting a variable called "username"

If using .cgi

import cgi
form = cgi.FieldStorage()
print form["username"]

if using .py:

form = web.input()
print form.username