Simple question but one i need to clarify for myself. In terms of collections that can be accessed in the request object there is:
Cookies: (whats in a text file in the browser)
Querystring: (whats passed in the url like [key=value&key=value etc])
Server Variables: ?
Form Variables: ?
The ones with the ? next to are the ones that I dont really understand where in the http packet/html they are placed. I did a capture using wireshark:
POST /Security/HelixSessionAuth.aspx HTTP/1.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 391
ClientIP=192.168.20.31
Url=%2Fflash%2F56553550%5Fhi%2Emp4
Log=SESSIONSTART%20%5B13%2FDec%2F2010%3A16%3A31%3A23%20%2B0000%5D%20%20flash%2F56553550%5Fhi%2Emp4%200%20192%2E168%2E20%2E31%203%20%5B13%2FDec%2F2010%3A16%3A31%3A23%20%2B0000%5D%200%200%200%20%5B0%20No%20Error%5D%20%5B0%20No%20Error%5D%20%5Brtmp%3A%2F%2Fhelix%2Epete%2Evideolibraryserver%2Ecom%2Fflash%2F56553550%5Fhi%2Emp4%5D%0A
HTTP/1.1 404 Not Found
Content-Type: text/html; charset=us-ascii
Server: Microsoft-HTTPAPI/2.0
Date: Mon, 13 Dec 2010 16:31:23 GMT
Connection: close
Content-Length: 315
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<HTML><HEAD><TITLE>Not Found</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Not Found</h2>
<hr><p>HTTP Error 404. The requested resource is not found.</p>
</BODY></HTML>
Where abouts would they be in the above feed?
The Form collection is the list of controls in the page that are passed to the action page via the POST method. Querystring is a GET, POST adds items to the Form collection. If you know the name of the control in the POST, you can access its value in the action page using:
Request.Form("myControl")
In .Net web forms, this is a little more complicated because .Net injects a specialized ClientID to preserve the ID of the actual control in the code behind.
The server collection is a collection of common server variables identifying information about the client, server, connection, browser, etc. A full list can be found here:
https://msdn.microsoft.com/en-us/library/ms524602(v=vs.90).aspx