HTTP Post to external website form

Hi

I am busy doing investigation into HTTP Posts to other websites. I found the code below which is used for posting HTTP Data to another website form.

My question is simply:
Does this process actually trigger a Form Submit action on the external website??

Thanks
(Please note the code is just a copy from another post simply to indicate what is happening and has not been tested - the question is more theoretical)
///////////////////////////////////////////////////////////////////////////////////////////
ASCIIEncoding encoding =new ASCIIEncoding();
 
string postData  ="p1=" + "FP98";
postData +="p2="  + ordertime;
postData +="p3="  + "Shop";
 
 
byte[]  data = encoding.GetBytes(postData);
 
// Prepare web request...
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("https://www.aaa.com/vvonline/ccform.asp");
myRequest.Method      = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
Stream newStream=myRequest.GetRequestStream();
// Send the data.
newStream.Write(data,0,data.Length);
newStream.Close();

Open in new window

djcheekyAsked:
Who is Participating?
 
MatthiasVanceConnect With a Mentor Commented:
Yes, it would do exactly the same.
However, you need to change your code in order for it to work correctly.

Kind regards,

Matthias Vance
' Wrong code
string postData  ="name=John";
postData +="surname=Smith";
postData +="age=30";
 
' Right code
string postData = "name=John";
postData += "&surname=Smith";
postData += "&age=30";

Open in new window

0
 
schalcraftCommented:
In theory, yes, submitting forms to a remote site does work. However, if the remote site doesnt want to allow this, then they wil have taken steps to ensure it cant be done.
0
 
djcheekyAuthor Commented:
Thanks - but what I'm asking is will the code above actually trigger a Form submit action with the data provided on the remote site?
0
Cloud Class® Course: Microsoft Office 2010

This course will introduce you to the interfaces and features of Microsoft Office 2010 Word, Excel, PowerPoint, Outlook, and Access. You will learn about the features that are shared between all products in the Office suite, as well as the new features that are product specific.

 
MatthiasVanceCommented:
You mean like the javascript onSubmit event?
No it doesn't get fired.

Kind regards,

Matthias Vance
0
 
djcheekyAuthor Commented:
Hi again, Let me elaborate:

The code above creates an HTTP FORM request and sends it to a remote website.

What I would like to know is whether this request that is passed via the code below is the same as someone submitting a form with the same data on the remote website?

Thanks


newStream.Write(data,0,data.Length);

Open in new window

0
 
MatthiasVanceCommented:
No it's not the same. You are only posting the data that you specify in your program. A form on a website might contain hidden fields etc.

Kind regards,

Matthias Vance
0
 
djcheekyAuthor Commented:
Yes, but if the form on the remote site is expeecting form items:
* name
* surname
* age

And I run the code executed below, passing the name,surname and age via the HTTP post request, does that yield the same result as if I had typed in those value into the HTTP form on the remote site and submitted?

Please read what I have written and try to understand it.
Thanks
string postData  ="name=John";
postData +="surname=Smith";
postData +="age=30";
 
 
byte[]  data = encoding.GetBytes(postData);
 
// Prepare web request...
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("https://www.aaa.com/vvonline/ccform.asp");
myRequest.Method      = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
Stream newStream=myRequest.GetRequestStream();
// Send the data.
newStream.Write(data,0,data.Length);
newStream.Close();

Open in new window

0
 
djcheekyAuthor Commented:
Aah - ok thanks - Yeah - I grabbed the code from somewhere else and I suspected it may not be perfect :)
Just wanted to know whether they yield the same effect, which they do, so thanks :)
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.