Getting And Posting With Webrequest And Webresponse
Apr 3, 2010
I would like to search an online (internet) database and import the result in my own Windows program. As I understand from reading and searching I first have to do a get from the default (search) page to get the cookies for instance and then do a post providing the filled input fields and adding the previously collected cookies. So far getting the information seems to work but submitting the data back to get the actual search result doesn't seem to work. This is what I have so far: [code]Anybody that can point me in the right direction? I my assumption correct that I first have to do a Get and then Post the correct data back?
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Dec 5, 2011
I made a small console program to login into a website.After figuring out on how to successfully login to the website i ran into a other problem... that problem is visiting the inbox page.The problem is as follow: when i visit the page i get logged out :sMy problem is i think that i don't know how to pass the cookie/session correctly since this is not a post/submit action...When i debug the site and click on the hyperlink i only get get response.
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Sep 16, 2009
i am trying to read website content and selecting some sites from list which contains keyword.But my program is freezing while sending webrequest and getting webresponse.Here is my code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim j As Integer = 0
Dim stream As System.IO.Stream[code]......
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Apr 2, 2010
I'd like to use the webrequest webresponse method to test for the existence of a file.If the first file is there, then I want to test for the existance of the same filename with -1.htm appended to it. If that filename exists, then test for filname-2.htm This continues until the filename being tested comes back 404 error. At which point, the program does NOT blow up, but the do until loop stops and the code continues. I have to search for a link on each one of the pages found once I have determined how many pages there are.How do I test for a file and not have it blow up? It has to loop and it goes through at least once. this is code I wrote. Right now the page just keeps going and going. IE's little logo on the page tab keep going around in a circle like it's in an endless loop.
Dim fr As System.Net.HttpWebRequest
Dim A As Integer = 1
Dim Count As Integer = 0
[code]....
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Mar 15, 2009
I am trying to write a little application that will help me monitor 8 websites sharing the same IP address.
The code that I am using to query the Status of the Websites is failing to report the correct status of the website; by status of the website, I mean, if it is accessible from any browser.
I got a timer that triggers the following
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'Create a web request for site.
[Code]....
Basically the webresponse is supposed to turn the textbox5 color to "coral" if the website is up and running or accessible, and turn the textbox5 red if the website is down. What is happening is that all the time the timer is triggered, the text box5 turns coral or "good connection" even if I entered a website that does not exist, Then after 3 minutes I get and exception error that states: The operation has timed out.
Basically, I just need a way to query the site and interpret the response by turning the textbox5 to color red in case the website is inaccessible or down.
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Feb 20, 2010
Im looking for tutorials on httpwebrequest and httpwebresponse. Im actually using chilkatsoft http which makes it quite easier.
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Dec 30, 2009
I've a php script that if the user ahs the privilege to download and image the image is sent to webbrowser but if the user has not the privileges and xml with the info is displayed.[code]
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May 5, 2011
I am currently facing an issue when i get response from webservice, after reading response in response stream i want to load this response stream using xmltextreader. but when Load(xmlTextreaderObj) is called, it raises an exception displaying that "Root Element is Missing". Here is code which am using.
Dim wResp As HttpWebResponse = CType(wReq.GetResponse(), HttpWebResponse)
Dim respStream As StreamReader = New StreamReader(wResp.GetResponseStream())
Dim Resp As String = respStream.ReadToEnd()[code]....
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Oct 6, 2011
Im trying to create a software which can post into yahoogroups.I've done trying to log in yahoomail but my problem is when I am going to post in yahoogroups, I am turning back in to yahoo log in page.
Here's my code so far:
Quote:
Imports System.IO
Imports System.Net
Imports System.Text
[code]....
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Aug 3, 2011
I understand how to post a value back to a standard asp.net page and how to then use that value at the serverside:
Request.Form("id_of_posted_value_goes_here")
How do I do the same in a webservice (asmx)? I can't use the line above because it says:
Name 'Request' is not declared.
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Dec 19, 2011
I am currently working on a form that performs several calculations and then submits it to a sql server. I was able to post test data to SQL when using command.CommandText = "<SQL insert statement, inserted values 'test, 5'>" followed by command.ExecuteNonQuery(). But now when i try to submit data using variables i get an "A first chance exception of type System.Data.SqlClient.SqlException' occurred in System.Data.dll"I am not a programmer, so sorry if my code looks a bit rudimentary...
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Jun 29, 2011
I'm using Visual Studio 2005 and ASP. NET 2.0 with this program. This is written in VB.net
Right now, we've got a Gridview that is embedded and databound into another gridview. The 2nd Gridview is hidden by default and expanded by the user. Within the 2nd gridview are several DropDownLists. The problem is that these DropDownLists are not firing the OnSelectedIndexChanged functon nor AutoPostback whenever I change the selecteditem.[code]...
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Jul 22, 2011
I'm having an issue with sending textfiles line by line on a timer.Currently I can pass a textfile location to my program, and on each tick it will send the first line, or the whole thing line by line. What I want to do is have my program pass line 1 of the text file on the first tick, and line 2 on the second tick, etc.LocationTB is where the user passes a file location.
ElseIf RadioButton2.Checked = True Then
Dim FILE_NAME As String = LocationTB.Text
Dim TextLine As String
If System.IO.File.Exists(FILE_NAME) = True Then
[code].....
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Sep 18, 2009
I have read the Sticky's on the CodeBank Forum. Since I havn't done this before, and I want to avoid upsetting anyone:A. Compiled Code- I am intending to upload a sample vs2008 project file, and some resources used in the project. I plan to delete the contents of the bin/Debug and bin/Release folders before doing so. Is this all I need to do?
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Aug 13, 2010
I have a simple question on posting to this forum: what tag to use for a code block?
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Apr 22, 2011
[code]...
web server was sending a HTTP/1.1 302 Found instead of HTTP/1.1 200 OK
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Mar 23, 2011
I am building a completely custom shopping cart for a client, and thesession("Payment_Amount") nor anything is posting to paypal.
Protected Sub OrderBtn_Click(sender As Object, e As System.EventArgs) Handles OrderBtn.Click
If OrderSummaryLit.Text = "" Then
[code].....
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Dec 18, 2011
I have a form which contains a fairly large number of values. I am currently submitting with a POST method, but I wish to convert this to do it with jQuery via AJAX. I have been experimenting with converting my code-behind "save to database" function into a Web Method. I am using a two-step function method, firstly preparing all the variables from Request.Form("parameterName") and then passing them all into a "saveData" function as follows:
[Code]...
From the post mentioned above, I can see I can send this string, but how do I process it server-side when recieved? The article implied that HttpContext.Current.Request.Form("parameterName") should work, but it doesn't... I'm guessing because I need to access it from the txtQuery variable..
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Feb 23, 2010
Is there another way to easily make a POST request in .NET other than the WebRequest class? I have a very, VERY small piece of data I need to post: password=theword but WebRequest randomly, and I mean randomly, drops the data when posting to my server. I've tested it by using a chunk of code from my server that dumps the request to a console, and I can that the client is sometimes sending and sometimes not sending the POST data.The code that I'm using that uses WebRequest works in another project, when talking to IIS. The server being talked to (a minimal web server in another system) responds properly every time I POST data to it through Firefox. I've got a function in the same project that fires off a GET request, and that works. It just seems like my POST function isn't completing the transaction...something I've noticed in the past when asking WebRequest to handle small strings.[code]
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Jul 19, 2009
Function PostWebservice(ByVal AsmxUrl As String, ByVal SoapActionUrl As String, ByVal XmlBody As String) As String
[Code]...
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Aug 26, 2010
I would like to build an application with visual basic.NET ( i currently have visual studio 2010) which posts a comment from my application to the remote website.On my VB form :i have 4 textboxes ( name, email , site address , and the comment text)and one submit button.on the remote site: 4 texts and 1 submit button !! same fields as my VB form.anyway what i want to do is to just post a comment from my vb application to the site.
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Apr 13, 2011
I am trying to login and then post message but my code seems useless. Can log in but does not post any message! Please help!!!
Private Sub ButtonPostMessage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonPostMessage.Click
Try
request = Net.HttpWebRequest.Create(strURL)
[code]....
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Sep 22, 2011
I've been trying to get this to work for days now, but I fail I have a very small HTTP Web Server using TCP sockets listening on port 80. I can connect and display html to the browser, parse GET parameters; but what I can't get is getting POST data. When I get a POST request, the headers and everything else come in fine, but the POST data is missing:
[Code]...
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May 14, 2011
I'm making an API for my website that i'll be able to utilize over VB.NET;So far the only thing i'm having problems with is uploading files;I'm trying to keep it as simple as possible on the .net side, so my PHP Script needs all the variables to be in the function;I know how to post a file via HTTP, But when I use this vb.net code:[code]
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Jun 4, 2012
i've two offices at main office i've main server and application. at branch office there's local sql server and application. at the evening when branch is closing i want to make a module which update all the records in main server via connecting through dialup or wireless.
i want to make a form like when one record is updated at the server then the counter will be 1 and similarly after all the records updated the counter shows the no.of records updated.i've made a module but there's i cannt handle the counter it updates all records very fast and shows me the counter of last record.
i need the counter with some delay like when one record is updated at server the counter label should be 1 for sometime then the other record update query execute any idea??
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Nov 16, 2011
I am generating ListItems for a CheckBoxList control in ASP, but when I do something like the following:
...
Dim newListItem As ListItem = New ListItem("RoleName")
newListItem.Attributes.Add("style", "color:blue;")
CheckBoxListControlToFill.Items.Add(newListItem)
...
"RoleName" is maintained from post back to post back, but my style tag is dropped after the first post back. If I want to keep any attribute like this, do I need to re-add it every post back?
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Jul 3, 2009
How to change encoding for posting data from Excel 2007 to win-1251? Now I have UTF-8, use WinHTTP.dll
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May 24, 2012
I'm having some issues with an Invalid Viewstate error and I can understand why it's happening but I don't know how to fix it so I'm hoping someone can help.
I have a page which is similar to this /story/?id=123 but I'm using a different page to Server.Transfer to this page.
So I've set up /info to Server.TransferRequest("/story/?id=123") and it works fine until the page does a postback to itself.
We have a login form on this page which simply reloads the page but when it does it seems to add /?id=123 onto the end of the URL so it ends up like this /info/?id=123 thus causing an Invalid Viewstate error.
I've already tried adding EnableViewStateMac="false" - this fixes the error but it doesn't log the user in as expected so it does not give the required result.
Is there a better way to redirect to my page other than Server.TransferRequest but still keeping the nice URL? - I don't want to response.redirect if I can avoid it.
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Apr 15, 2011
Upon a javascript button click, I'm using jquery to post to a url:
$(".optionClick").click(function () {
var caseOption = $(this).attr('title');
$.post("../tracking/RecordClick.aspx?page=gallery&item=" + caseOption);
});
On the page being called, I'm using the following vb.net code to retrieve the querystring variables and write them to a database:Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]...
Each of the javascript blocks above worked locally as intended but failed in the same manner with multiple DB writes and Firebug "Aborted" status.If I call the url+querystring directly via the browser, everything works as expected. (Edit) Also tried using the full path url in the code above - no improvement.
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Jun 8, 2010
My first project is a scraper program. I would like to see if anyone can send me code or a tutorial on how to do it. I would also like to learn how to make a message posting program for a social site.
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