Web Forms :: Post Data To Offsite Page Programmatically
Feb 11, 2010
I need to post data from my asp.net page to a non-asp.net page that is offsite. How can I do that without redirecting to that page? IE: not using a button's PostBackUrl property.
working on a client's website that has a gallery and uses a thumbnail.aspx page to shrink images on their site for product galleries. However, they want to move the image files to another URL so I need to modify the thumbnail.aspx code to use a networkstream, but I'm not sure exactly how to do this. Could someone point me in the right direction?
I wish to make a script which programatically send the POST data to one server and then the other server receive the POST message and retrieve the information. How should make this work? I already successfully write the sender site, the code as follow:
string postData = "id=0&co=5"; ASCIIEncoding encode = new ASCIIEncoding();
I need to simulate an HTTP POST programatically, i.e., I need to generate a Request with some POST variables and then send it to a page. To clarify, I need to simulate the behaviour of a regular POST, not do the whole thing programatically. So basically I need to fill in a Request in the same way it would be filled if a form POST was happening, and then send the browser to the page that expects the POST.
I've got a web page that will have information passed to it, and after doing some checking it will log the user that was passed to into a secure site. Currently I've got the code below working, it actually posts the respected page and logs me in. Howevever, the problem arises after it the login page appears. Instead of the url in the address bar of explorer showing the web address of the page I'm on it shows the web address of page that sent me to the log in. Is there any way using this code (or another set of code) that will allow me to do this? This is part of a single sign on project, and most of this is pretty new to me.
Dim postData = String.Format("my post data") Dim data As String = postData Dim uri As New Uri("my web address") If uri.Scheme = uri.UriSchemeHttp Then Dim request As HttpWebRequest = HttpWebRequest.Create(uri) request.Method = WebRequestMethods.Http.Post request.ContentLength = data.Length request.ContentType = "application/x-www-form-urlencoded" Dim writer As New StreamWriter(request.GetRequestStream) writer.Write(data) writer.Close() Dim oResponse As HttpWebResponse = request.GetResponse() Dim reader As New StreamReader(oResponse.GetResponseStream()) Dim tmp As String = reader.ReadToEnd() oResponse.Close() Response.Write(tmp) Exit Sub End If
Update: Ok, it seems as though the method above is "scraping" the response from the web page and placing it on my page. This isn't what I want. I want to post the data and actually go to that page.
I need to include an offsite javascript file on my page, however I don't want it to be able to affect the performance of my site, in case the server where the javascript is on is down or not responding.
What I'd like to know, is if it's posible with javascript to make some sort of wrapper function to ensure that the page where the offsite javascript is hosted is responding within an acceptable timeframe.
I've considered adding the "defer" attribute to where I include the javascript, but that would as far as I know still leave the site hanging after the rest of the page is loaded.
If it's not possible to do in javascript are there any good alternatives?
Given a gridview has 10 pages comprising of 10 records/page, how do I programmtically select a particular page in the code behind ? For instance, I'd like to set page 5 as the current page of the gridview during databind. I do not have any codes at this stage but this is what I'd like to achieve.
I have an ASP.Net form that gathers some data, validates it and then submits it to PayPal. PayPal expects a form control named AMOUNT in the POST. However, since I am using webserver controls and validating that data, it comes across as ctl00$ContentPlaceHolder_Body$AMOUNT.What is the best way to change this over so that PayPal will be happy and the data can get properly posted? I could change them to <input> controls and not validate, but that isn't what I really want to do. I could take the input and then programatically create the data and then post it to the PayPal URL, but I'm not sure how to do that. These are just some of the things I have considered doing.
I have an app which has a form that used to use AutoPostBack rigged controls (dropdowns, radiobuttons etc.) in an updatepanel, and I used to set session values on each postback. I posted the form using PostBackUrl to an external page, using a bit of javascript OnClientClick to copy my data into meaningfully named hidden fields.
Now, I've had to rewrite the AutoPostBack-ing controls so that all the cascading dropdown work and date calculation etc. is done in JavaScript, and not in C# - no more postbacks, no more updatepanel.
This means I've lost the ability to set my session values on postback. Can anyone think of a solution for setting these before I post my form? I need to set the session variables, plus post (querystrings are not an option) to the external page with the values from my form - and actually send the user to the external page, too.
I need a way to change the ActiveViewIndex of a multiview control based on some query results. Right now I test to see if I have rows returned from my linq query. If so, set a certain view active. If no rows are returned, I would like to set a different view active. I would like to do this on Page_Load if possible.
Right now I get the fatal "Object reference not set to an instance of an object" error on page load with it bombing at line 12. My count is given a value at runtime so that is not the issue. Can anybody tell me why this is and how to get around it. Code is attached.
I also tried this both the pre render and Page_Init event but both yielded the same behavior with the Object reference not set to an instance of an object error. I can do this just fine in an onclick event for a button, but now I need a way to run a test and set the default view when the page loads. Seecode below
protected void Page_Load(object sender, EventArgs e) { eCrystalPSGDBDataContext psgDB = new eCrystalPSGDBDataContext(); int count = (from st in psgDB.studyTbls where st.patientid_i == Convert.ToInt32(Request.QueryString["PatientId"]) && st.studystatusid_i == 1 select st).Count();if (count == 0)else if (count == 0) { StudyInfoMultiView.ActiveViewIndex = 1; } else { StudyInfoMultiView.ActiveViewIndex = 2; } }
I have a repeater with a nested LinkButton that passes record's unique identifier (ADRTYPECODE) to the same page.I would like to change its behavior to pass the same argument to a different aspx page.How do I make that page respond to an event fired by this button?
Some say it is not a bug it is default in asp.net. but for me it is a bug in logic. When you say refresh it should be reload the component that you are refreshing. But in asp.net i notice that they recalling all activity and viewstate like event and data that are triggered in the previous postback. My opinion it is a redo not refresh. this is only my observation on the issue dont hate me on this microsoft fan.
asp.net with vb. I thought this would be easy but have been reading for an hour and not found out how to simply repost a page where form data has been entered and return the page with some error messages about what was entered. I want to return the page with all input controls with the data just as the user entered them before submitting. the error messages are labels that were blank when the page is first loaded. preferably the page returns focused to the topmost error error message. if that can't be done I would populate some label at the top of the page with something to the effect that 'errors were found, scroll down to see the errors'
I need to send a simple variable value from my WPF app to an aspx page. The page runs under an anonymous web site. What are the best practices to post a single value and ead it out on the other side (aspx)?
i am trying to grab data from here : http://mediaforest.biz/mobile/nowplaying.aspx in the page you select a station and post it then you get new page with data. but i cant grab it, i get the same page again.
I have a page that I am adding user controls to the bottom of the controls each postback. The User Control has a textbox in it and the focus needs to be on this newly created control textbox each time. It all works almost perfectly however when there are too many controls to fit on the page, because I set the focus to the textbox the bottom of the page is set to the textbox that has focus not the very bottom of the page. I have a submit button below this which ends up below the page limit. How can I set focus to a textbox but still scroll to the every bottom of the page to show the submit button.
When the users presses submit, I get the below error and for the life of me cannot figure out why! I have tried GET as well, byt that just seems to post to itself and just puts the form vairables in the URL rather than going to formprocess.aspx.page you are looking for cannot be displayed because an invalid method (HTTP verb) was used to attempt access.Please try the following:Contact the Web site administrator if you believe that this request should be allowed.Make sure that the Web site address displayed in the address bar of your browser is spelled and formatted correctly.HTTP Error 405 - The HTTP verb used to access this page is not allowed.Internet Information Services (IIS)