VS 2008 : Why Does CPU Usage Jump So High When A WebBrowser Control Is Navigating To A Page
Jul 26, 2009Why does CPU usage jump so high when a WebBrowser control is navigating to a page?Is there a way to drop CPU usage?
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WebBrowser Control - Navigating Page With Additional Header
Jan 15, 2012Here is my code:
Dim TestHeader As String = "Referer: [URL]"
If chkRefferer.Checked = True Then
WebBrowser1.Navigate(cmbUrl.Text, False, Nothing, TestHeader)
Else
WebBrowser1.Navigate(cmbUrl.Text)
End If
Whenever I try and browse to a page with the 'TestHeader', IE opens up and goes to the page.... However, if I navigate to the same page without the additional header, it loads up fine in my webbrowser control.
VS 2008 Navigating My Code - Flow Can Jump From Place To Place
Mar 11, 2010Like I imagine everyone, I often have problems navigating my code because the flow can jump from place to place. For example, if my code calls routine1, and I then want to go to routine1's code, I know that I can click in the dropdown menu and it will take me to that sub. But wouldn't it be easier if I could somehow right click on the call to routine way and select something like 'take me there' which would transport me from the function making the call to the code for the function being called? Then it would be easy to hop from place to place.
View 1 RepliesWebBrowser Control Not Navigating To A Local Document?
Apr 26, 2010I have this code set up to navigate to a certain .html document depending on what's selected from a ListBox:
Private Sub FileList_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FileList.SelectedIndexChanged
HelpWindow.Navigate(System.AppDomain.CurrentDomain.BaseDirectory & "help" & fileArray(FileList.SelectedIndex, 1))
End Sub
The problem is, when I first select something in the ListBox, it successfully navigates to that file and displays it. But when I select something a second time it doesn't change.
All of the paths it's trying to navigate to are correct. I've checked this 1000 times.
Windows Service Adn High CPU Usage?
Nov 2, 2010I am working on a windows service and I am looking for a better solution to an issue with high CPU usage. The service needs to only 'run' every minute or two to gather some db data and do some light processing. Right now I have it running in a separate thread in the service application using the BackgroundWorker. In that thread, I do a Thread.Sleep(30000) after each db iteration. This has taken care of the CPU issue (obvious) but I am let thinking there is a better way. This works fine, I can still cancel the service without issue etc. however it feels wrong. Blocking that thread seems bad.
That being said, what is the best way to actually do this? I don't want the loop to just constantly run, I only want it to do work on a somewhat regular time frame. Would running this in a timer_elapsed event handler be a better way?
Low-level Keyboard Hook Unhooks At High CPU Usage?
May 3, 2009I have a program that uses low-level keyboard hooks, because it's a program that needs to be able to catch keystrokes, even when holding down capslock or what so ever.
Anyway, I figured out (by making a sample program running at the same time on purpose consuming 95% CPU by making an infinite loop with nothing in it) that low-level keyboard hooks stops working if the CPU usage is that high, and you do a lot of typing what so ever.
VS 2008 WebBrowser Control - Wait Until Page Loads Before Executing?
Mar 28, 2009How can I make the webbrowser control wait until a page finishes loading before continuing on to the next lines of codes?
View 2 RepliesVS 2008 Web Browser Navigating To Its Intial Load Page (home)
Sep 24, 2009I have made many web browsers that just navigate to a web page, I don't have any buttons or any thing like that as it is controlled via other software using shortcut keys etc.I have created a button in my other software that sends the keys strokes "Control" and "H" I can get this to navigate to a webpage by manually typing i the same page that it navigates to when the form loads, but this mean I have to type the address in twice for each browser I make. I first type the url for the browser to navigate to in the properties section in VB and this is nice and quick to type in each webpage and build quickly build a new browser for it. Currently I have to repeat that url in the browser_homebutton Private Sub, what I want to happen in the below Private Sub is that it navigates to what ever address is typed in the "URL" cell in properties of the browser. What should my "Then" statement say? [code]
View 2 RepliesRemove The Upper Navigation Option From The Page We Are Navigating To That Is The Back Arrow In The Page In Wpf
Dec 7, 2009i am new to wpf and i try out navigation but i want some help when we navigate to a page other than the main page then its gonna have a back arrow in the top corner visible allowing to go back but i want that it should be hidden
View 11 RepliesWebbrowser Not Navigating To Desired URL?
May 10, 2012I'm automating a download,and I know the URL to the download page. Well, not exactly. This URL is indeed what I need to use, but the website redirects it to the REAL download page. Unfortunately the redirect only happens if I do an exit sub. That is to say, if I do a loop sleeping one second per iteration, the loop goes on forever waiting for the redirect. But if I branch out of the loop by inserting an Exit Sub in break mode, I can see the redirect occur onscreen. (I can watch the current page in the web browser transition to the desired download page). The trouble of course is that I don't WANT to do an Exit Sub at that point, so what's the solution? Do I need to call Browser.Navigate on a background thread?
View 4 RepliesGet Page Source WebBrowser Control?
Jun 3, 2011i want to get the html Source code of website,it something like:wb.Document...
View 13 RepliesWebbrowser Control Save Page Again?
Nov 5, 2010I know it is possible to save a page viaWebBrowser1.DocumentTextI want to save the current loaded page in webbrowser controlin the same way i.e. does,creating the mypage.html and the associate dir mypage_filesthis way I also save images
View 2 RepliesJump Straight To A Page When The Pdf File Opens?
Oct 16, 2009ive got all my files that i need in my solution box in there lovely folders, written the code to the locations of them so i can call them back. If publish to a cd to be used on another pc will those files transer across and work correctly on the other pc, or do i need to change the code below to something else.here a sample of the code ive been writing to open PDF files in adobe reader, to read the files and open them?based on textbox1 entry as part of file name then button 1 to button15 pressed in relation to which product im using.Also i need to try to read across a line of data in a pdf file, and transer each block of info a text box, and how to i jump straight to a page when the pdf file opens.I cant suss it out from the document information on my harddrive.
Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click
If
[code].....
VS 2008 ExtendedRichTextBox Control Usage?
May 31, 2012I found an ExtendedRichTextBox which was in C# i converted this class to vb.net using online code converter. There are number of options in like justifying the text, Inserting numbers list to selected text, Line spacing and etc i am unable to apply its some functions like line spacing, InsertOleObject etc if any one can figure out how to use the new functions of this control ? control is attached.
View 1 RepliesPrevent Webbrowser From Navigating To Websites?
Sep 2, 2011I am working with vb.net to making a form that prevents the web broswer on windows internet explorer from navigating to certian pages. The code can't just work on internet explorer because I could make a program with a web browser that navigates. It has to prevent the web browser itself from navigating.
View 7 RepliesStop User Navigating Away In A Webbrowser?
Jul 29, 2011I am currently building a webbrowser that only loads one page, but I don't want the user to be able to navigate away by clicking advertisement links, as I don't want them to be able to surf the net, clicking links could eventually lead them back to Google to search for what they like if they are clever enough!
View 2 RepliesWebbrowser Extended Navigating Event
Jul 3, 2009I have this code to attach a new navigating event to a custom webbrowser control. Here it is:[code..]
I do not know what is happening here, as I have used this code on previous projects before.
How To Show Page Title On WebBrowser Control
Nov 15, 2009Have experimented, but none of them has worked.
View 16 RepliesHow To Wait For Webbrowser Control Load Page
Jan 10, 2009I have a web browser control, what I use is:
Ret = (MainBrowser.ReadyState <> WebBrowserReadyState.Complete Or MainBrowser.IsBusy)
If ret is true, not loaded, otherwise, loaded. It works fine on winxp, however, on vista, most times, it works, sometimes, not. Do I have to use documentcomplete for this? The page is loaded from another thread, does it matter?
IDE :: WebBrowser Control - Navigate To Page That Uses Sessions
Apr 5, 2010I'm using a webbrowser control in my program and I navigate to a page that uses sessions. I need to delete them somehow and I tried to close IE and enter it again and it worked, the sessions were deleted. But I've done it manually, and I need to do it through my program, so is there a way to imitate the closing and reopening of my webbrowser control?
View 3 RepliesVS 2005 Error In Page For Webbrowser Control
Dec 17, 2009I am navigating to a web page with my webbrowser control
[Code]...
and this works on most pages. Now I'm going to a page that I guess there are errors in the page and I get a box asking me if I want to debut in IE's built in script debugger or something to that effect. Is there any way to have the system ignore this message and continue to load the page as normal
WebBrowser Control - Navigate To Page That Uses Sessions?
Apr 5, 2010I'm using a webbrowser control in my program and I navigate to a page that uses sessions. I need to delete them somehow and I tried to close IE and enter it again and it worked, the sessions were deleted. But I've done it manually, and I need to do it through my program, so is there a way to imitate the closing and reopening of my webbrowser control?
View 10 RepliesWebbrowser Control Find Words On Page?
Mar 20, 2012Hi,I need to see if a webpage displayed via the web browser control contains certain words .I've tried parasing through the html but that contains too much junk html and css tags which caused problems(I've tried using regex to remove them).That was done by using property webBrowser.document.Body.InnerText.contains .
Are any way to search through the actual text on the webbrowser and not html via the program in ways similar control-f function on most webbrowser but using code to do that ?
Clear WebBrowser Control Of Previous Page Before Loading Next
Jan 19, 2012I am using web browser control in one of my forms for displaying html files (local files). Before I load the next file I want to clear the webbrowser control of the previous page. I am trying the following method which I found while searching the net.
private Sub ClearWebBrowser(ByVal wb As WebBrowser)
Dim tempDoc As IHTMLDocument2 = CType(wb.Document.DomDocument, IHTMLDocument2)
tempDoc.write("")
tempDoc.close()
End Sub
I have added the reference for mshtml namespace in com tab. When trying to run the program, error is thrown like "Type 'IHTMLDocument2' is not defined. (BC30002)".
Create A WebBrowser Control And Navigate To A Page To Login?
Oct 26, 2010I'm using a WebBrowser control in my current program in a bit of a bastardized way: I don't use it visually, I just use it because I'm more familiar with its events.
So, basically, I create a WebBrowser control and navigate to a page to login. Then, when logged in, I create a new WebBrowser control and navigate to a different page.
I've used this program for four months with no difficulty. Starting today, though, the second phase of that has been going really, really slowly. What used to take 3-5 seconds is taking 25-30 seconds. It still works eventually, it just takes a while.
Usually I would assume this was a server problem. However, navigating to the exact same URL in Firefox happens extremely quickly. Weirder still, within the program there is a user WebBrowser control -- I can copy/paste the URL the previous (not visible) WebBrowser was navigating toward into this user WebBrowser, and it goes just fine.
What in the world could be holding up this other "custom" WebBrowser? I don't even know where to begin in diagnosing this.It might be important to note that the site this is working based off recently underwent some changes -- but I can't imagine why that would affect only these "custom" WebBrowsers and not the user one in the same program.
Modify Html Page With Porgram In Webbrowser Control?
Aug 31, 2009For example how do u delete on row in a table?how do you remove a <img /> entry?
View 4 RepliesModify Html Page With Program In Webbrowser Control?
Aug 31, 2009For example how do u delete on row <tr> in a table <table>?how do you remove a <img /> entry?
by remove means not just set the innerText to?
VS 2010 - Webbrowser Control - Getting A List Of ALL Links On A Page
Dec 25, 2011How can I get a list of ALL links on a page after browsing to a page via the webbrowser control?
View 3 RepliesWaiting For Webbrowser Control To Finish Loading Page?
Dec 25, 2011I have been tasked to do a project, and have been given a list of links from the client - what the Project needs to do is:1 - open google with a specific search phrase - no problem2 - look on that page for any links containing any member of the list of links, if found, invalidate the entry in the list, and auto-click the link, then go back3 - repeat for any other "finds" on that page4 - when done, auto-click on "Next" (no problem) and go back to step 2For now, I am not even attempting to auto-click the found link and go back, I am just listing all found links in a TextBox. The problem I am having is waiting for the next pages to load before looking for a match in the list of links. I tried using webBrowser.DocumentCompletedto set a Boolean - I tried testing WebBrowserReadyState in the DocumentCompleted event ar the code below gives the best results but it is inconsistent, meaning it completely misses some pages that I know have links on them that match.
View 6 RepliesWebbrowser Control - HTML Page With Embedded JavaScript?
Jun 5, 2009I am using a Webbrowser control to access the elements in an HTML page which contains a JavaScript link which when clicked, adds extra content to the page. This works fine in IE 7 and Firefox.I then want to access this extra content in my program. Having found the HTML element containing the link, I tried element.InvokeMember("click"). I have used this successfully with a submit-type link to login to the web site, but cannot get it to work with the JavaScript link. I also tried setting the focus to the link element and using SendKeys to send the ENTER key, but all to no avail. Nothing seems to happen. I don't see the extra content produced by the JavaScript, nor do I get an error.Here is an extract from the HTML, showing the relevant (I hope) code:
[Code]...