Webbrowser.navigate To Tif Throws Browser Error?
Oct 27, 2009
I recently upgrade a project from vb 6 to 2008. Most of the code runs fine.I have a webbrowser form control that I use to navigate local files and display them with. (i have a file list box that you click which calls the navigate of the browser control). Most file types i have test work fine and display just as they would in a real browser window. Excel, PDFs, etc... so examples of files that utilize "plugins" like acrobat reader inside the browser work great. Tiff files are the exception. No error is thrown in vb, but the browser throws 2 runtime errors, included at the end here. After the browser errors are ignored the program continues execution but will just not display the file.
i can type the path to the file (eg c: estfielsfilename.tif) in a regular browser window and it displays just like it should, inside IE, using a plugin.Prior to upgrading, depending on what was installed on the computer, navigating to a tif would open the tif with picture and fax viewer, or display it with a tif viewer plugin.
Line:1
Error: Invalid Character
when click NO to debug it goes to
Line:0
Error:object expected
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Sep 3, 2009
I would like for my program to navigate via textbox1.text with multiple lines and multiple url links inside of it. I know how to make the webbrowser1.navigate via textbox1.text with multiple lines, however I want my webbrowser to navigate to each url every 1-1.5 seconds once button1 is clicked. Yes, my webbrowser1 will navigate to the specified urls via the textbox1.text (multilines) with a button click, but I need the webbrowser1 to navigate in a order sequence from top to bottom of Textbox1.text (multiplelines) every 1 second. Here is the current code that I have to navigate via multilined textbox1.text control in order sequence:
[Code]...
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Aug 24, 2008
I want to make something that can on button click navigate to a page, wait the time I specified and navigate to another page..
[CODE...]
This does not do what I thought it would do..I think that the problem is that when it sees System.Threading.Thread.Sleep(5000) everything stops for 5 secs .How can I make it go to google.com and then after 5 seconds, yahoo?
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Dec 19, 2008
[code]It just doesn't work.it errors. What it needs to do is navigate the webbrowser on the selected tab. Hwo to fix this?
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Aug 15, 2011
Basically I have a webcrawler app which uses a web-browser control to navigate to a URL. Once the page is loaded, I use the function below to grab the HTML. Once I obtain the HTML, using HTML Agility Pack I extract the plaintext. Once this is down, with a click of a button I save the url, and plaintext to the database (using sql server).
tb_HTML.Text = WebBrowser1.document.Body.OuterHtml
Now my question is how can I carry the above as a background process, whereby say I have a form and enter all the url I need to extract the plain text from i.e. download the HTML and then using HAP extract the text and then automatically save the result inside the dB.
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Nov 22, 2009
I have created a tabbed browser, and for the Go button, i have added the following commands
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Jan 3, 2012
I get some errors when I'm trying to navigate to a website that's https, what am I doing wrong? See attached photo for more details.
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Sep 28, 2010
I can create them using Ctrl+T(webbrowser controls and all) but after that I don't have any idea on how to control them(let's say I select the 5 tab and I don't know how to make that web browser control to navigate to a given webpage). I was thinking of creating an array of webbrowsers but I don;t know how that works.
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Oct 7, 2010
I cannot for some odd reason get the webbrowser to navigate I have enabled web content I use the form button and place it the coding I put
Code:
Private Sub WebBrowser1_StatusTextChange(ByVal Text As String)
Me.WebBrowser1.Navigate2 "www.google.com"
End Sub
it just has a white screen
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Jun 23, 2011
In my app I am using a web browser control, I am displaying a list of files that are there in selected Directory, when the file type is of some image I do it as WebBrowser1.Navigate(sFileName), the image is then displayed in the Web Browser Control, when there is Word Doc I had code that converts the word doc to HTML and it is displayed in the WB Control all good so far, now when the file is of type xls, xlsx I am not converting the file to HTML instead I just use the navigate command and open the file in Excel so that user can then edit it and save it on his system. Now the problem is lets say I am toggling through pages in Directory first file is Image so it will be displayed next when it is Excel file then it will open the file in MS Excel but the WebBrowser COntrol has that previously opened image, I want to clear that when the excel file is opened. So here is what I tried. [code]It navigates to Excel file but does not display text and the image from previous file persists in the web browser control.I even tried to navigate it to "about:blank" but it then does not navigate to Excel file.
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Sep 10, 2009
i use the web browser control and i need to get only view source without the display the url in navigate in web browser(block it , saved time to get a view source)
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Sep 4, 2009
I have a webbrowser1 control that navigates via Textbox1.text (W/multiplelines) and set on a Timer1 (every .25 seconds).My issue is that I need to navigate to at least 1200-1500 urls before Timer1.stop (), but my webbrowser1 seems to only make it to 200-500 max, before I get an error saying that my program is "Not Responding" and freezes.
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Feb 28, 2011
I have writtine a program in VB 2008 that uses "webrowser1.navigate" in a browser that I created on a form in my application, so that I could add buttons for other functions on that Form and to load a web page with Flash content. Everything seems to work fine on 32 bit machines but, on 64 bit machines when the web page is loaded, Falsh content does not work and I get a Security Warning asking "Do you want to install this software?" and the software is Adobe Flash Player. IE is 32 bit (on 64 bit machine) and has Flash Player installed and the Flash content works for this web page using IE.Is ther some code that I should add or a property that I should change on the VB 2008 Form containing the browser that I created, so that the Flash content will work?
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Mar 15, 2012
I am using WebBrowser Control...
When form is loading i set webbrowser to navigate a website.
Now this website running too much popup ads.. So each time webbrowser navigate a new popup window open out of my application.. Is their any way to stop that..
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Apr 25, 2010
Is it possible to use WebBrowser.Navigate() with a proxy? I read somewhere that this is possible but I cant find the link now.
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Nov 2, 2009
I have a webbrowser on my windows form and a text box above that with a go button. The webrowser is a search page.Is what I would like to do is type something in the textbox and hit GO and it will search for that word in the webbrowser.The search is setup to where if you were to set the url as it would bring up the results for "keyword"Is there a way with the navigate function to do something like.[URL]..basically I need a way to append the text from the textbox at the end of the url.
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May 24, 2009
I was thinking:
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Browser.Navigate(ComboBox1.SelectedItem)
[code].....
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Jun 1, 2012
I have built my own browser 9see attached code) however I would like to modify the code so that textbox1 reads a txt file at start and uses the contents of that text file to navigate to a URL of equal value to the text with in that text file. All this should happen at the launch of the web browser form. Example of the text file contents would be [URL] Code as follows:
[Code]...
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Apr 20, 2009
I'm working on a webcrawler in VB.net, and using the System.Forms.WebBrowser object for handling navigation on sites that use javascript or form posts, but I'm having a problem. When I navigate backwards (WebBrowser.GoBack()) to a page that was loaded with a form post, the page has expired and I have to do a refresh to resend the request. When I call a refresh (WebBrowser.Refresh()), a dialog box pops up to confirm. Is there a way I can get around this modal dialog in code?
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May 13, 2009
I'm using a webbrowser control to pull some information from a website. It works fine.I load the web page when the user clicks a button and then I pull the information from the site when the page completely loads. I have this bit of code in the DocumentComplete event.I am doing this for two different websites. So, my code as it is, looks something likes this:
vb.net
Private Sub btnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click
WebBrowser1.Navigate("http://www.website.com")
End If[code].....
If I add a second Navigate to the same WebBrowser control, and then add another Document. GetElementById line, using different variables, it doesn't work.Its obvious that it loads both sites and then it finishes. So, it never has time to finish the first load and then pull the info into the text box.Is there a way to do this? To load the first site, pull the info, load the second site, then pull the info from there?
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Jan 13, 2012
I need to send a pdf file to a web page in VB.net. I found that there is a webbrowser control and I should be able to use the navigate() method to do it.However, there is no sample for doing so.
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Aug 7, 2009
I made a quick Web browser that I only want to show one page when you press a button ( you have to enter a name into a textbox and it will then make the URL to show), but the page has some links on it, which I don't want people to click on.
1) Disable the hyperlinks
2) Disable left clicks in the browser
3) Make the browser somehow only visible and not actually interactive with a mouse
I tried something like
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebBrowser1.AllowNavigation = True
[code]....
Which I assumed would allow navigation once you clicked the button, but would then not allow it once you are done clicking it, but it just stays at false.
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May 17, 2010
I am making a webbrowser, can somebody tell me how to prevent my browser from opening new IE windows. Because what happens is, there are some links that will open new windows and therefore IE comes in place because it is set as default windows browser which I really don't want because my browser looks really bad if it opens links in another webbrowser. I want it to be just a basic browser, it has only one window, and it should navigate within that window. This is because the browser is integrated in a bigger application only for some website applications that are related to this main application.
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Jun 13, 2011
I have a program that has a webBrowser navigate through a few pages, and when it gets to the last page I set it to navigate to, checks if there is a certain string on that page. I just switched my code around to use multithreading and now the statement
If WebBrowser1.DocmentText.Contains("...") Then
...
End If
Generates an InvalidCastException that says "Specified Cast is Not Valid".
Here is how I start the thread (when a button is clicked)
FUBCThread.Start()
And here is the Sub that is run
Public Sub beginFUBC()
While True
If TimeOfDay > "11:31:00 PM" Or TimeOfDay < "07:00:00 AM" Then
[Code] .....
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Nov 4, 2008
in my form load, I have the web browser control navigate to a site. What I'm trying to do is when a user clicks button1, i want the program to look through the webpage and check if there is an image source equal to a static URL that I assign. this is basically just navigating to a website & checking if a certain link exists.
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Jul 22, 2011
I am developing a webbrowser and i have got a big problem..The webbrowser uses tabcontrol as a brwser to navigate.I have a problem , that the tabcontrol doesn't have the same events as webbrowser, so i can for example put my download manager in the FileDownload event becouse it isn't there, or a new window and all that evets usefull that webbrowser has and the tabcontrol doesn't.
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Jul 29, 2009
I based a lot of my project on your Codebank submission for navigating web pages. I have ran into the problem a few times where it would stop navigating. You had recommended deleting the Interop files and rebuilding the solution. I have done this and it used to work just great afterwards (I was deleting all Interops and AxInterops in the Bin/Debug and Obj folders)I now have a strange case where it compiles and builds and navigates as expected on the computer I coded it on, but when I install it on another machine, it fails to navigate again. I made certain it worked directly before building and that I used the correct setup file but nothing I seem to do now cna make it navigate on the second machine. What else should I check?
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Jun 3, 2010
I have an application that allows users to navigate PDF files on a local network. Each time a new document is opened, a tab page is added to my tab control and the webbrowser control is added to it then I call the webbrowser.navigate function to open the file.In windows XP this worked great. However, when switching to Windows 7, it always wants to open the PDF using adobe reader in a new window.
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Feb 25, 2009
I have a simple program with a web browser control and a button that causes it to navigate to a certain web page, as well as an input and another button for entering a url directly.Everything was working fine until I started messing with the document completed event in the control.The form loads a url initially and after that 80% of the time it freezes when clicking the button or entering a new url. I deleted the document completed code and now it still freezes a majority of the time.
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Oct 1, 2009
Creates a webbrowser in a background thread, then is supposed to navigate to a url and return a htmldocument, but the navigate fails for some reason
NOTE: this is part of a class where you see ME.url or me. ... me.isrunning = boolean false by default me.url = uri of location to navigate to
Public Function GetDOC(ByVal url As Uri) As HtmlDocument
If Me.IsRunning Then
Throw New Exception("Object Currently In use")
[Code]....
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