I'm trying to get cookie-response from a website.
For example each time I visit google.com I would like to retrieve new cookie values, is this possible? Below I'll have a code using webbrowser to retrieve cookies :
var cookies = FullWebBrowserCookie.GetCookieInternal(webBrowser3.Url,false);
I tried httpwebrequest also using codes I found on this site, but I can not get new cookie-values from the website.
All help would be appreciated
Regards,
dennis
Ok so I found a working method over here but i can not put this code in a loop.
var StringURL = "http://www.google.com";
HttpWebRequest request = null;
request = HttpWebRequest.Create(StringURL) as HttpWebRequest;
HttpWebResponse TheRespone = (HttpWebResponse)request.GetResponse();
String setCookieHeader = TheRespone.Headers[HttpResponseHeader.SetCookie];
textBox18.Text = TheRespone.Headers[HttpResponseHeader.SetCookie];
If i put this code into my application, which runs in a loop the application get stuck. When I put this code on a button, I can push button once and it prints out the cookie perfect, but when I hit the button again the app will get stuck also. So if there is anyone with a solution for this please be so kind to explain what I'm doing wrong.
Related
I have a page in .Net that currently does some processing of info when a button is clicked. It posts back, updates some info and then redirects the user onwards.
What I want to do now is for this same button, when it's clicked, the info is updated but instead of a redirect it does a POST to another site. The reason being that this other site needs to read a bunch of data from the form I submit.
So, I know about the PostBackUrl property but that will stop the processing of the data that I need done.
So is there another way for me to be able to somehow combine both a postback that then becomes as POST to another site?
Or alternatively some way for me to be able to do the updates I need and then do a POST?
The suggested solutions all kind-of worked but the only one that actually did exactly what I needed it to was this one:
Link to SO answer
The reason the other answers above didn't work is that I was POSTing to a payment gateway and for whatever reason their system thought there was a problem with various missing fields in all solutions except the one I linked to. No idea why, I don't have access to their systems to know what they were actually doing.
In any case, thanks for all answers but have a look at the linked one if you're running into a similar issue.
if PostBack isn't absolutely needed, you can actually send them in the request query itself.
You can do a POST from codebehind, you can find details in this answer Redirect to another page using Post method from Code behind
If I got your question right I think you will need to get all the form data from Request.Form and make a HttpWebRequest to the other site:
string url = "http://anothersite.com/";
// create post data
StringBuilder postDataBuilder = new StringBuilder();
foreach (var key in this.Request.Form.AllKeys)
{
postDataBuilder.AppendFormat("{0}={1}&", this.Request.Form[key]);
}
string postData = postDataBuilder.ToString();
// create the web request for the POST
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = postData.Length;
// add the post data
using (StreamWriter requestStream = new StreamWriter(webRequest.GetRequestStream()))
{
requestStream.Write(postData);
}
Hope this helps!
I've recently been looking on how to get data from a website using C#. I tried using the WebBrowser object to navigate and log in, and that worked fine, but I keep getting the same problem over and over again: when I navigate to the wanted page I get disconnected.
I've tried several things like making sure that only one HtmlDocument exists but I still get logged out.
TLDR: how do you stay logged in, from page to page, while navigating a website with WebBrowser? Or are there better alternatives?
EDIT: So far I have the following code;
currentWebBrowser = new WebBrowser();
currentWebBrowser.DocumentText = #"<head></head><body></body>";
currentWebBrowser.Url = new Uri("about:blank");
currentWebBrowser.Navigate("http://google.com");
HttpWebRequest Req = (HttpWebRequest) WebRequest.Create("http://google.com");
Req.Proxy = null;
Req.UseDefaultCredentials = true;
HttpWebResponse Res = (HttpWebResponse)Req.GetResponse();
currentWebBrowser.Document.Cookie = Res.Cookies.ToString();
At which moment should I get the cookies? And is my code correct?
You have to preserve the cookies returned from your login request and reuse those cookies on all subsequent requests - the authentication cookie tells the server that you are in fact logged in already. E.g. see here on how to do that.
I'm hoping I've done something knuckle-headed here and there is an easy answer. I'm simply trying to retrieve the list of comments for a page on my site. I use the social plug-in and then retrieve the comment id via the edge event. Server side I send the page id back and do a simple request using a HttpWebRequest. Worked well back in October, but now I get an 'internal error' response from FB. I can use the same url string put it into a browser and get the comments back in the browser in json.
StringBuilder url = new StringBuilder();
url.Append("https://graph.facebook.com/comments/?ids=" + comment.page);
string requestString = url.ToString();
HttpWebRequest request = WebRequest.Create(requestString) as HttpWebRequest;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
Ideas? Thanks much in advance.
Since you're using the Facebook C# SDK (per your tag), try:
var url = "{your url}";
var api = new Facebook.FacebookClient(appId,appSec);
dynamic commentsObj = api.Get("/comments/?ids=" + url);
dynamic arrayOfComments = commentsObj[url].data
I have wrote a little downloader in c# for different sites with videos to download them.
On the site "youtubeunblock.com", I get a different source code from the page when I start a WebRequest in the program. On any browser -> View Source Code I get under the embed source another link for the file appears different from what I have on the Downloader.
The code for the request inside the downloader:
CookieContainer cookieJar = new CookieContainer();
HttpWebRequest myWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
myWebRequest.CookieContainer = cookieJar;
myWebRequest.Method = "GET";
HttpWebResponse myWebResponse =(HttpWebResponse)myWebRequest.GetResponse();
StreamReader myWebSource = new StreamReader(myWebResponse.GetResponseStream());
string myPageSource = string.Empty;
myPageSource= myWebSource.ReadToEnd();
myWebResponse.Close();
return myPageSource;
i can try to explain
When i browse to this Site and search a video - > look at the source code (over a browser) from this page i found a tag file=http://12345.flv?12345
when i took this link into a href=http://12345.flv?12345 i can download this file.
when i try to take the source code from this page over the Webrequest, then i get the follow link file=http://12345.flv?abcde <- this link won´t work
Can anyone explain me this?
Your question is very unclear, but I think that this site don't allow unregistered users to download from it, so your code won't work.
I am trying to login to a HTTPS website and then navigate to download a report using c# (its an xml report) ?
I have managed to login OK via cookies/headers etc - but whenever I navigate to the link once logged in, my connection takes me to the "logged out" page ?
Anyone know what would cause this ?
Make sure the CookieContainer you use for your login is the same one you use when downloading the actual report.
var cookies = new CookieContainer();
var wr1 = (HttpWebRequest) HttpWebRequest.Create(url1);
wr1.CookieContainer = cookies;
// do login here with wr1
var wr2 = (HttpWebRequest) HttpWebRequest.Create(url2);
wr2.CookieContainer = cookies;
// get the report with wr2
It can be any number of reasons. Did you pass in the cookie to the download request? Did you pass a referrer URL?
The best way to check is to record a working HTTP request with Wireshark or any number of Firefox extensions or Fiddler.
Then try to recreate the request in C#