August 8, 2008 02:17pm pdt

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Which input field values are send in a POST request to a server

Zones: Hypertext Transfer Protocol (HTTP), Programming for ASP.NET, WebApplications

Tags: http POST

Hello,

I am trying to form a post request, but I don't know how to specify which was the submit button. I am simulating a form that has more than one element that can submit the form - <input type="image".
When the browser is making a POST request, does it send the values of all the input fields (for example does it send all '<input type="image"' or only the one that has initiated the submit).
I am using ASP.NET and some example code located at:
http://www.americanparanoia.com/presentations/dotnetWebRequest/dotnetWebRequest.htm

May be I have to add something more to "lcPostData" in the string at the example below, in order to specify which was the submit button.

Are there any programs that I can use to catch a POST request, and display its content?

Thanks,
Alex

         
           
           
             HttpWebRequest loHttp = (HttpWebRequest) WebRequest.Create(lcUrl);
string lcPostData = "Name=" + HttpUtility.UrlEncode("Alex") + 
   "&Company=" + HttpUtility.UrlEncode("Test");
 
loHttp.Method="POST";
byte [] lbPostBuffer = System.Text.Encoding.GetEncoding(1251).GetBytes(lcPostData);
loHttp.ContentLength = lbPostBuffer.Length;
Stream loPostData = loHttp.GetRequestStream();
loPostData.Write(lbPostBuffer,0,lbPostBuffer.Length);
loPostData.Close();
HttpWebResponse loWebResponse = (HttpWebResponse) loHttp.GetResponse();
Encoding enc = System.Text.Encoding.GetEncoding(1251);
StreamReader loResponseStream = new StreamReader(loWebResponse.GetResponseStream(),enc);
string lcHtml = loResponseStream.ReadToEnd();
loWebResponse.Close();
loResponseStream.Close();

           
         

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Question Stats

Zone: Networking

Question Asked By: Alex7777qq

Solution Provided By: PaulHews

Participating Experts: 2

Solution Grade: B

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