i 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 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 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]...
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 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 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'm writing a program that uses a webbrowser to update a page and gather its data. But it's reloading the page from the cache. I located the cache and quickly found that it cannot be deleted like normal files.
Now i really only need to delete one file, specifically a javascript file, because that's the only thing i need updated. But deleting the cache is proving to be a bigger problem than i thought, let alone deleting a single item from the cache.
I'm having an issue trying to pull information from a specific website. I've asked about this once before, but had no luck through searches or responses.In a nut shell, the issue I'm having is trying to pull information from several URLs from a site.When I load the first URL and pull the information, it works just fine. But if I want to pull another from that same site, it acts like it is loading, but doesn't pull the information. In order for me to gather that information, I have to restart the program, but that beats the purpose.So, I wanted to see if the issue was related to cookies or something else the webbrowser control creates when loading a site. If this is the case, I'd like to clear out this information, or at least try it, after each time it pulls the information from the site.
View 6 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
is there a way to convert an htmlelement to string
View 7 RepliesI 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].....
I have given reference to Microsoft HTML in COM (am using VB 2008)
"Unable to cast object of type 'System.Windows.Forms.HtmlElement' to type 'mshtml.IHTMLElement'."
I want to retrieve all the properties like the class name, html id of every object in the web browser. I am getting the above exception when i try to direct cast it.[code]...
how can i make my webbrowser open up a new link in my same webbrowser or in another form? basically what im saying is i dont want it opening links in internet explorer.
View 3 RepliesI use webbrowser as File Explorer.
If you click folder it opens new folder contents in WB window but if you click html document it opens in EXTERNAL viewer.
How do you get html document to open in WB while exploring ?
I am writing a few web based apps which will require a webbrowser extension. I have already used the IE webbrowser control that uses the trident web rendering engine. I believe this is MSHTML.DLL? Anyway, some of the users of my programs have complained of a few things. Particularily,
1. It seems to be a slow browser, at least compared to other rendering engines out there (webkit and gecko are 2 known ones).
2. On the developer side, it seems to be low in features. The features are sufficient in most cases, but there are some "special" things that I need.
3. It has VERY low HTML (and especially HTML5) compliance.
My question is, how much work would it take to use a different engine (such as webkit .net, which I HAVE heard of) and be able to distribute it easily. Or, if you guys feel ambitious, we could try writing a brand new engine ourselves. I know how big of a job it is, and frankly, I have no clue where to begin. I would just like your thoughts and opinions on the matter.