HTML Data Sent Through HttpWebRequest Is Empty When It Gets
May 2, 2011
I was doing cross-domain ajax calls from an HTML-only (no server programming) page, to a PHP backend on a different domain. I realized at one point that I couldn't do POST with cross-domain, so I figured I needed a local proxy. Unfortunately, PHP is not available on that domain so I have to resort to ASP.NET.So I built a very quick & dirty vb.net proxy... It works, except for one very important detail. If any of my form fields contain HTML, the data is not sent to PHP (or PHP doesn't receive it, I'm not sure). Actually, the $_POST variable exists, it's just empty all the time as soon as it contains what looks like html code, such as <p>. That same field, if it doesn't contain an HTML tag, will work fine and the data is passed on to the PHP page. [code]
Oh the PHP side, all I'm doing is $var = $_POST["htmldata"]; , and $var is always empty. I'd give an example of my PHP but I don't know that it's necerssary. $_POST["action"], for example, contains the correct action I'm expecting, so it's not the PHP code itself that's wrong.Well, if you encode the HTML so html entities are correctly passed on (not as <), it works!
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Dec 28, 2011
What I would like to know is how to obtain form input elements during an httpwebrequest?
[Code]...
Is it possible to obtain these input elements during an httpwebrequest without having to view the html code?
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Sep 26, 2010
I have took a little research for the method to grab the html tag and input the textbox strings into the html page by using system.net.webclient and httpwebrequest, but I couldn't find the answer.o get the the method for system.net.webclient and httpwebrequest to grab the html page and input the strings into the php form?
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Dec 31, 2010
I am trying to get source code from a webpage. Webbrowser control is giving me the required information that I am looking for. But I want to use httpwebrequest but its giving me different source than webbrowser documenttext.
[Code]...
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Aug 30, 2011
I have a web application where the user uses an HTML editor to input some formatted text to show on the website. This text is stored, as HTML, in a database. It turns out now, after some time, that users are sometimes entering whitespace (newlines, spaces, etc) before and/or after the text they are entering, and this whitespace shows up in the rendered text on the page. Multiple sets of this text are displayed top to bottom, and due to this whitespace the separation between bits of text varies, which doesn't look very pretty. So, I've been asked to get rid of the whitespace automatically.
Seemed like an easy task at first, I'd just call Trim on the string. But that won't work, the 'whitespace' when rendered isn't actually whitespace at all, it's a bunch of <br /> or <br> or <br></br> tags, or spaces such as, even empty paragraphs <p></p> sometimes. So calling Trim won't help, I need to get rid of all the tags that would render as whitespace.
The HTML editor control I'm using may or may not have built in support for this, but it doesn't matter, the database is already full with texts that contain these newline tags, so the best option I can see is to simply trim this whitespace before displaying it on the page. [Code]
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Oct 11, 2011
I'm trying to use HttpwebRequest and Httpwebresponse to log into a website via POST then once authenticated have it redirect to a default page within the new site. I'm able to do a responsereader.ReadttoEnd() put am unsure of how to get an automatic redirect.
Dim ccContainer As New CookieContainer()
Dim encoding As New ASCIIEncoding()
Dim strId As String = "username"
[code]...
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Jul 29, 2009
This is the short instruction:
1) Make a single HTTP-POST request to the following URL in XML format.
[URL]={password}&user={username}
2) The xml form field that is posted should be named "createorder".
I don't get the last part with naming the xml form field. What the xml form field means (stands for) in this context?
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Jan 24, 2012
I can grab info from a website uing httpwebrequest but i don't know how to post to a form :/Ive always used a webbrowser for this but its a tad slow.Here is what i use with a webbrowser:
Dim DBSplit() As String = Split(TextBox5.Text, "/")
WebBrowser1.Document.GetElementById("email").SetAttribute("value", TextBox1.Text)
WebBrowser1.Document.GetElementById("Pwd").SetAttribute("value", TextBox6.Text)
[code]....
How would i post this data to a form using httpwebrequest?
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Jun 30, 2010
vbnet
Public Class zWrapper
#Region " Variable Declaration "
Private _AllowRedirects = True, _UseGZIP As Boolean = True
[Code]....
It works fine for GET requests, but when I try a POST, it errors: Quote:
A first chance exception of type 'System.NullReferenceException' occurred in WindowsApplication1.exe
Request Error: Object reference not set to an instance of an object.
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Feb 11, 2012
I'm new to using httpwebrequest i've always just used webbrower controls but want to get away from doing that for obvious reason with that said.
I'm having it go to a wepage there is no login what so ever. but there is a cookie that holds saved data from the page. when in IE or any other brower you click an option from a combo box and it reloads the page and saves that data to a cookie.
CODE:
if you just do a httpwebrrquest it goes to 1 - Home what i'm trying to do is get to 25 - Page2 the cookie has the Sid number i'm been searching and reading for atleast 10hrs now and not even close to anywhere farther than i was. if i used Webbrowser it would just save the cookie for me automaticly but want to get away from hearing the clicking and wasting time of downloading all the pictures and stuff.
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Jul 24, 2009
I have the following HTML Form That I'm trying to automate:
<html>
<body>
<!-- The data encoding type, enctype, MUST be specified as below -->
<form enctype="multipart/form-data"
[Code]....
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Jun 11, 2009
The form I want to post to has a dynamic boundary.Is there a to detect the boundary pre-POSTing?Also, do I need to send the data in the format of:
[code]...
Or can I set it up in pairs like: "var1=value1&var2=value2"...for all required form fields? What is the difference between the 2?
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Mar 18, 2010
[code] I'm trying to post data on these two TextBoxes using HttpWebRequest method , Blow is the post data string [code] So when i send this request to the website , It only post the password but not the name , There's something causing conflict with the word name either 'name="name"' this line or something else.
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Dec 22, 2010
I have been used getelmentbyid in past in vb6 using webbrowser control and internetexplorer instance But in vb.net i tried to fetch webpge using the httpwebresponse Which gives the html / source in the form of sting Is it possible to fetching data by getelementbyid using httpwebresponse and httpwebrequest method ?
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Apr 6, 2011
I am creating a project in VB.NET in which one of the reports require that the name of employees should be displayed as column names and whatever work they have done for a stated period should appear in rows below that particular column.Now as it is clear, the columns will have to be added at runtime. Am using an ODBC Data source to populate the grid. Also since a loop will have to be done to find out the work done by employees individually, so the number of rows under one column might be less or more than the rows in the next column.Is there a way to create an empty data table and then update its contents based on columns and not add data based on addition of new rows.
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May 5, 2011
I have a Customer JSON object created which has value as below:[code]I need to get this data in the Handlers/CustomerHandler.ashx to do some DB operations.[code]
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Oct 25, 2011
I am trying to bind XML data into a gridview, after clicking the 'ButtonSaveToDataBase' button, the method will begin to read data from my gridview and load it into an array of my serializable class type and after that serialize it and finally store it into a XML type field in my SQL. The problem is When I call BindData() at the end of the serialization, it reads the XML from my database and successfully binded it but my gridview displays an empty row below my datas like this:
[Code]...
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Oct 13, 2010
Data retrieve successfully in the combo box. But first look on combobox is look empty until i click the side button of combo box. I want that combobox show first line of data without click the side button.
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Jan 10, 2012
This may sound really stupid but I have to ask cause I'm not finding this answer anywhere.I have an application where the user will need to sign up for a new user account on the website [URL]..However when I am using Firefox's plug-in Firebug to view html I am getting something totally different than when I just right click on the site and view the page source.
What I am trying to do is to get the captcha from the website and display it in a picturebox on the application so the user can view the captcha, solve the captcha and then the app post is back to the service for a response.
Here is the source that I am getting using Firefox's Firebug to inspect the element:
<td>
<input type="hidden" value="Oo3Jo1I8bgzK68agMqo3s79ZZib2OkbK" name="iden">
<img class="capimage" src="/captcha/Oo3Jo1I8bgzK68agMqo3s79ZZib2OkbK.png" alt="i wonder if these things even work">
</td>
[Code]...
Why would the two be showing me two different versions of the HTML?
And how would you be able to grab that source to view in a picturebox using webclient?
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Jun 21, 2010
I'm binding data table to datagrid but i'm not sure how to delete the empty cells in that data table
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Aug 19, 2009
I am using VB.net to create a simple winform. I have the option to save the data I input on that form. I am trying to prevent the user not to save the data if textbox10 is empty. I tried the 'while' loop but I go into an infinite loop. The code is below. The 'if' statement gives the error but allows the user to save.
While Len(Me.techniciansTextBox.Text) = 0
MessageBox.Show("Please Enter a Technician To continue")
End While
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Oct 18, 2010
How to avoid getting empty fileds in a data boud combo box?
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Jan 27, 2012
I am using visual studio 2010, service-based database. I created a simple table and created an edit form for that table. But when I save a row and then clear the text of a textbox (which holds a decimal value), it simply does not let me tab off the text box or save it. I put a ErrorProvider to see whats going on. It says "Input string was not in correct format". But I allowed this column to be null in my table. So how do I fix this error. And by the way, it does not happen for all text boxes.
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Jun 20, 2009
Usage: Users create pretty HTML news letters in another app. They post the newsletter to the web, but they also want to set the contents of the HTML news letter file as the body of an email and send it using Application In Question. The users understand to use absolute link and image references when sending an E Newsletter. Environment:
AIQ is a VB.Net app deployed via ClickOnce. It is an intranet app; one can be sure MS Office 2003 and the interop 11 dlls are on the target machines.
Restrictions: MAPI is out. It mangles the HTML. Since it is a ClickOnce deployment, we can't register dlls (I think, correct me if I am wrong). Therefore CDO and COM is out (again, I may be wrong.... I would be happy to be proven so).
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May 14, 2010
I'm using the following to populate a listbox from a sql server:[code]Is Available returns true (It's a bit in sql) or false - Is it possible to replace this with something shorter, say a checkbox or tick image?Also, is it possible to only display actual data rather than the whole field including empty characters? I have a few nchar(30) fields, the above seems to include all 30 character spaces.
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Apr 26, 2010
How I can show header/footer of Asp.Net Gridview with empty data source?
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Mar 8, 2011
What I'm trying to do is to write a generic rss reader that I plug in any URL into without worry if the feed has all the common properties. For instance in my example below I'm looking for pubDate, however if no pubDate exists in the xml I'd like to return the current Date. I cannot seem to get the syntax right though.
Dim xmldoc As New XDocument
xmldoc = XDocument.Load(url)
Dim feeds = From feed In xmldoc.Descendants("item") Select New With { _
[code].....
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May 11, 2009
I'm writing a VB.NET program (VS 2005) that reads data from an XML document and writes it into a column in an excel spreadsheet. It's working fine, except for the following: after the first run, all the data appears as expected - for example
COLUMN
a
b
[code]......
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Feb 25, 2010
I want to do the same that works previously on HTML but now via .NET Windows Forms.When I submit this HTML it works :
<html>
<head>
</head>
<body>
[Code]...
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Sep 14, 2010
I am wondering if data grid automatically shows a first column (empty) before the others, if that can be edited out.
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