have a form with webbrowser and browsed website with an html selectbox in website and i dont want the other <option> elements unless couple of them for easly filling the fields at every visitn
View 5 RepliesI need to click an image in a webbrowser from a Windows Form in VS 2010.I can click ordinary links using code such as this one:
Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click
Dim lnk As HtmlElement
For Each lnk In Form2.WebBrowser1.Document.Links
If lnk.InnerText = "the_text_of_the_link" Then
[code]....
When it comes to the second variation of the code I often get the following error message (exception):NullReferenceException was unhandled Object reference not set to an instance of an object.
Basically - how do I tell it to click on it only if there are two separate and unique strings of html code in a html tag?
I am having some problems with Navigating to the same URL of the WebBrowser.I am trying to get an HtmlElement from the WebBrowser. This HtmlElement is a simple link ("href"). The link is shown on the site that I am navigating to, every hour for only 1 minute and than disappears.I want to check every 15 seconds if this link exists. So, I am doing a loop with a Timer and refresh the WB control.The problem that I encounter is when the WB control already navigated to the site that I wanted to check, it always navigate to the same page when refreshing. The links or the DocumentText are never changed, even if I enter Internet Explorer and see that it has been a change in the page.
View 9 RepliesI am trying to get position of html elements in a .net's webbrowser control and failing, i need the exact position of the element relative to the whole document or the webbrowser control to be able to send a mouse click using SendMessage() P/Invoke..I have tried the solution from here but it didn't work:getting absolute position of HTML element in webbrowser control with C#.I am guessing that is because the page relies on very complex ajax and css.the function "WebBrowser1.Document.GetElementFromPoint()" works just fine in getting the accurate html element, i just need the opposite of it.other wise, should i just keep on searching using "GetElementFromPoint()" until getting the correct element?
View 1 Repliesi have a form with webbrowser and browsed website with an html selectbox in website and i dont want the other <option> elements unless couple of them for easly filling the fields at every visitng
is there any control to remove unwanted html elements exist at string getting by GetElementbyid or somthing like that? so here is some of my code works fine on otherfields
[Code]...
I have a Web-browser Control in My Form , in Which i am showing one HTML Page .
>>That HTML Page Contains Several Anchors.
>>As per my Requirement user Can create An Anchor by providing The Appropriate data like "Id", "Href", And "Value" .
>>for providing Those Values i have an Input form.
>> Now after Providing That Data .User has to select the Position By Selecting The Previous Anchor And Next Anchor.
i am Getting All The Anchors In the Document From The Following Code
For Each Elem As HTMLElement in WebBrowserDoc.Document.GetElementsByTag("a")
CmbTag.Items.Add(Elem.innerText)
Next
Now i want to place an anchor in between user selected Anchors.
I am working on a project that involves the editing of html of pages on the fly. I have put a webbrowser on the form, and I am able to retrieve the element under my mouse by using: wBrowser.Document.GetElementFromPoint(e.ClientMousePosition) in the Document.MouseClick event.However, I want the experience to be more intuitive, by placing a semi-transparent blue rectangle over whichever HtmlElement the mouse is currently hovering over. I created a borderless form with 20% opacity for this, which works great, except that I cannot for the life of me figure out how to calculate the screen coordinates of the element under my mouse. Here is what I have so far, but while the size is adjusted correctly, the location of the rectangle is just stuck at (0, 0) relative to my form. Highly annoying:
[code]...
I am trying to get the HTML inside a HTMLElement which has an id "block". I have tried:
If webbrowser1.document.getelementbyid("block") isnot nothing then
MsgBox(webbrowser1.document.getelementbyid("block").innerHTML)
end if
But it keep throwing a NullReferenceException and tells me to check if it null/nothing which is what I'm doing.
So how do I check if an element in a HTMLdocument with a certain ID exists?
I am grabbing an HTMLElement from a browser object and then using getElementById to grab the element I want. When the element is grabbed into the HtmlElement object double quotes around attributes like <input type="checkbox" name="test1" /> becomes <input type=checkbox name=test1>.It is removing the double quotes and backslash from the HTML available in the HtmlElement. Is there anyway to get the HTML element from Visual Basic .NET code and keep the true HTML formatting?
View 1 Repliesis there a way to convert an htmlelement to string
View 7 Replieswhen i add aa webbrowser control and set
vb ScrollBarsEnabled = False
the scrollbars still appears when i load project i try adding it to a commandbutton and wait till webpage loads and then ScrollBarsEnabled = False but nothing works..
[Code]...
Is it possible to remove the 3d border of a webbrowser?
View 2 RepliesI want to make a webbrowser, but only have it show one specific thing and not the whole page. The thing I want it to show and only show is in about the middle. How would I frame the page, and put it on the webbrowser?
View 1 RepliesHow can I get html elements from a stream?
This is a part of a code that get me the stream[code]....
I am trying to get html element from a stream
this is the stream:
Dim request As WebRequest = HttpWebRequest.Create("http:www.mysite.com/")
Dim response As WebResponse = request.GetResponse()
Dim stream As Stream = response.GetResponseStream()
How can I get the html elements from it? (I DO NOT WANT TO USE WEBBROWSER CONTROL)
Then I will do something like...
For Each element As HtmlElement In XXXXXXXX
ListBox1.Items.Add(element.GetAttribute("href"))
Next
Public Class Form1
Dim IE As New Object
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
I'm using a WebBrowser control in VB.Net to load a website. At that point, the WebBrowser.Document.Images property returns a collection of HtmlElement that are considered images.
What I'm trying to do at this point, is take a particular HtmlElement that represents an image and turn it into a System.Drawing.Image so that I can manipulate it. But I can't figure out how.
I did try to search for an answer, but came up with nothing. 'WebBrowser', as it turns out, seems to be a really popular keyword.
EDIT: It's been suggested that I use the SRC attribute of the HtmlElement to download the image; but the image can be dynamic - meaning the image I download can be separate from the image on the website....so, that won't work for my purposes.
It seems that in previous versions of Visual Basic it was possible to convert a System.Windows.Forms.HtmlElement to the various System.Web.UI.HtmlControls but in 2008 I cannot seem to do this.What I am trying to do is convert HtmlElements that I got from a WebBrowser.Document into HtmlTableRow HtmlAnchor etc. to manipulate them but I cannot find a way to convert them in this version. I guess my questions are :1. Is it possible to convert a System.Windows.Forms.HtmlElement into one of the various ystem.Web.UI.HtmlControls ?2. If not, is there another way to cleanly manipulate tables and anchors etc. from a HtmlDocument without writing my own logic to find the tags etc
View 4 RepliesIs there some way I can iterate through all available attributes for a given html element
something like:
for each lo_Attrib as attribute in htmlElement.attributes .........
This is the button code in the html for a button on a webpage that displays more results. I tried to use the browser.invokemember but Im not getting any results back. Here is my
For Each element As HtmlElement In wb.Document.GetElementsByTagName("id")
If element.GetAttribute("id") = "more" Then
element.InvokeMember("click")
[code].....
I'm trying to post to my blog programatically using VB .NET. So far, I've been using this to set the title:
WebBrowser1.Document.GetElementById("entry_title").InnerText = "title"
It works fine. However, when I try to set the body text:
WebBrowser1.Document.GetElementById("entryBody").SetAttribute("value", "body")
It won't work. It worked for me before, but now I can't get it to work again. I used the .OuterHtml command to view the line of code, and it assigned the value perfectly. However, it still won't display in the webbrowser. This is the code from the webpage I'm working with:
<textarea style="width: 95%; height: 350px;" name="entry[body]" id="entryBody">text inserted here
I have this code which should change a password field into a text field in a webbrowser so that a user can see it:[code]Can anyone find a reason why this is not working, or find a better code to do it?
View 3 Repliesis there a way to convert an htmlelement to a string ?
for ex Dim myhtm as HtmlElement = webbrowser1.document.getelementbyid("specificelement")
'to the Dim myhtm2 as string = myhtml
I was just trying to create something and I found a little code on the web. When I pasted it it got 8 errors, and I could get rid of 5. The other three; I have no idea... It returns an error ('Value' is not a member of System.Windows.Forms.HtmlElement'). How should I fix this? The code is:
[Code]...
I tried several samples on the forums I can not get it to click.
For Each element As HtmlElement In WebBrowser1.Document.Links[code]...
Is there any way to convert an HTML string to an HtmlElement for easy parsing? If not, what's the best way to proceed?
View 3 RepliesI am trying to insert text into a text area in a webpage using the following code:
Dim webTextArea As New HTMLTextAreaElement
WebTextArea = Main.WebBrowser1.Document.GetElementById("name of web text area").DomElement
WebTextArea.value = "text to be inserted"
[code].....
just to finalise this, how can i remove duplicates? i have tried this:
[Code]....
I have the following coding in place which basically edits my text file, however with the information that is shown in the text file I want to remove all duplicates, is this possible?
Dim path As String = "c: est1.txt"
Dim sb As New StringBuilder
Dim sr As New StreamReader(path)
[Code]....
I have taken my project that seemed to have several bugs in VB2008 Express and upgraded to 2010. I had to remove or add several references again. I don't have any more errors but I have the following 5 warnings that keep me from compiling the build. I was wondering if anyone could give me some suggestions on what these mean or how to take care of the problem. I will list the warnings below. I'm on a Win XP machine with Office 2010 (if that might affect things).
Warning1A reference was created to embedded interop assembly 'ADODB' because of an indirect reference to that assembly from assembly 'AxInterop.OWC11'. Consider changing the 'Embed Interop Types' property on either assembly.PE Files
[CODE]...
This last one I have gotten before but when I tried to update the components it only caused my program to become corrupt and tons of errors. I'm not sure if I did something wrong previously or if this might have been a random occurrence.