Create And Manage 10 WebBrowser Controls?
Feb 18, 2009
I've created some messy code to look at the Readystate of each WebBrowser control and using boolean variable to track which WebBrowser control is done what. The time it takes to load 1000 URL's with one WebBrowser control is about 10 minutes. Multiple controls are needed for speed.
Here's the pseudocode of what I want to do:
Read a line from a file
Which WebBrowser is currently available to do work
Navigate to URL
Which WebBrowser is done loading a URL
[Code].....
View 6 Replies
ADVERTISEMENT
Aug 23, 2011
There is newer code in a follow up post. I suggest using the code in the later post rather than the code in this one. You can still read this post though. When designing a user interface, one should be conscious of how many individual controls are required to implement the functionality. In some cases an initial design may begin with many buttons or textboxes (for example) but then further review of
the actual required functionality allows for a reduction in the number of unique controls.
But other times, there isn't a better way (which will still make sense to the user of the application) then to have a series of many repeated controls. So in the cases where one can be certain that the best UI implementation for an application will require the use of multiple copies of a given control, then it often becomes necessary to maintain some method of managing all of those controls at various points
throughout the application. Doing so typically requires that one build up some collection of controls which can then be accessed by index in order to work with any given control; but this can lead to a lot of clutter in the code file which handles these control's events. For instance there will be some kind of collection declaration, some recursive routine to find all of the controls of interest, and then any number of event handler methods with long lists of Handles clauses, or additional code loops to wire up the event handling for each control.
Purpose Since most of this functionality could be considered a requirement regardless of the type of control being managed, or its required functionality, it may make sense to wrap all of the control management functionality into a single class. And since our first requirement is a collection of controls, then a base collection class could be the perfect starting point for our control manager. There are a number of existing thread around this topic, with some recent (at the time of this writing) ones being:[URL]..In this, and related, threads I have posted examples of a simple TextBoxManager and ButtonManager control. But again, with so much similar functionality required regardless of the control being managed, it would be technically possible to create a generic ControlManager(Of T As Control) class which can manage any type of control.
[Code]...
So in summary, one can facilitate managing a large number of user interface controls by building a "control manager" class which both encapsulates the list of control instances, and deals with adding and removing defined event handlers for every control it manages. The generic control manager class itself can be inherited and extended into a more specific class on a per-application basis in order to provide more application-specific functionality. Reed Kimble - "When you do things right, people won't be sure you've done anything at all"
View 9 Replies
Dec 10, 2006
I would like to know how do .net developers manage a large window application with a large number of controls, such as textbox , button, groupbox? I have seen a number of people do it this way : declare the controls as an array and initialize them one by one at run time . In this way it is easy to manage those controls because they can be accessed by array index; but this solution seems to require very good understanding of control's attribute such as its location, font etc. This could be a difficult task if the project is passed on to a less experienced developer and add changes to it.How do you deal with it?
View 8 Replies
Dec 1, 2009
What is the best way for me to have several datasets ?i've thought about creating a routine for creating datasets with a number in their names, each one with the desired data, but that's not very intelligent (although might work)i'd like to create what would be like an "ARRAY OF DATASETS"
[Code]...
(obs, i've done the same code loading one XML to one dataset and it works perfectly, i've gone back and forth more than one time to assure that it isn't just a logical mistake, it's syntax and lack of programming knowlegde.
View 3 Replies
Dec 6, 2009
Im a new in this VS2008. But i have some foundation of programming in VB6.0. So im planning to create this application using VB since im familiar in that language.I downloaded a Visual Studio 2008 and SP1 - now on its 90-day trial, and planning to buy the full version depending if it will meet my needs. I just read afterwards the conditions and how to buy it. I hope its free shipping and credit card is acceptable.^^
I need to make an application something like a reporting system, my plan application is a client-server application. Currently im reading the How to topics and some walkthroughs so far so good. Now here are some sort of details and target need to fulfill.
1. An interface from client that will input the data from the multiple-user , including images and these data will be saved in database/table remote server (center database server) LAN.
[Code]...
View 3 Replies
Feb 23, 2010
I'm trying to create a program that will manage and organize my music (mp3) files. So I used a ListView (SongList) to show the files that are in my music directory. Then I'm using a class found online to get the Title, Artist, and Album. Then it will insert it into the ListView and assign it a tag with the same value. But then when you hit the button to start the organizing the real problems start.
What it is suppose to do is check if the chosen directory exists then if it does it will create a folder for the artist of the song it is processing then a folder for the album then copy and rename (title) the song into that folder, then move onto the next song. But when it tries to create the directory it says there are invalid characters but there aren't. Also for some reason it wont put the Album name into the string for the directory???
Heres the function used to do just about everything:
Code:
Function CopySong(ByVal SongPath As String, ByVal SongName As String, ByVal SongArtist As String, ByVal SongAlbum As String)
If System.IO.File.Exists(SongPath) = True Then
Dim RootDir As String = "C:UsersCalebDesktopMusic"
[Code] .....
View 1 Replies
Aug 25, 2009
I using Microsof Visual Basic 2008 Express Edition. I need to create a form like: 2 buttons are open and save existing .xls file which each generation can choose a different.2 textbox that can be entered on the column
and last button to when choose two columns, to find duplicates values and mark different color same values. Is it possible?
At the moment Excel file opens, but the comparison does not require the introduction of the columns
View 1 Replies
Jun 3, 2006
I am creating a dedicated browser to be used exclusively on a single program located on my hard drive. Security is not a concern as the webbrowser URL will be set to the program's default web page path with no navigation options for going online. The program utilizes dynamic web pages with powerful search capabilities that require ActiveX controls. When I run my browser application, I get a series of security warning boxes stating:
Internet Explorer
An ActiveX control on this page might be unsafe to interact with other parts of the page. Do you want to allow this interaction?
Yes No
Clicking "Yes" allows me to continue and the program features work, but the recurrent warning message boxes are annoying. The default "script errors suppressed" property of the webbrowser control is "false." If I change it to "true" I don't get the security warning boxes but some of the search features on the web pages with ActiveX controls don't work properly.
Is there a way to programmatically enable ActiveX controls in the webbrowser control so that I can set the "script errors suppressed" property to "true" (hence no security warning message boxes) and still allow the ActiveX features to work properly? Or, set the "script errors suppressed" property to "false" and have my program automatically activate the "Yes" button each time a security warning message box is called by Internet Explorer? The goal is to get the ActiveX controls to work in webbrowser without having to click through the warnings.
View 4 Replies
May 19, 2011
synconize scrolling of two webbrowser controls in VB?
View 2 Replies
May 6, 2009
I have an VB.NET application that you can feed in using a file or other means a bunch of Website URL's and using six Web Browser Controls launched on separate threads navigate to and then images are captured. Almost instantly the Working Set Size accelerates to 1GB and continually rises as the process progresses until it flat out exhausts memory, of course it's a memory leak.
While watching the Performance monitor CLR managed memory is reasonably low and is being managed properly "cleaned up" as you would expect - Gen0,1,2 are reasonably empty. BUT non managed NET storage is out of control. So my question is: Web Browser controls are NET ActiveX objects... is storage ever allocated for them outside of CLR? And since they are really components of IE does their usage somehow require IE to generate and allocate storage outside of CLR. That is to say using a Web Browser control is just an API for the real the IE full browser and that does allocate storage in a non CLR managed address space.
View 2 Replies
Mar 18, 2010
How can i add a method to the webbrowser controls .Document property?
(i.e. webbrowser1.document.[myMethod])
I've been researching Attributes. Am i on the right track?
View 2 Replies
Dec 22, 2009
tell the code for menu strip controls in vb.net webbrowser?
View 2 Replies
Jan 31, 2011
I'm trying to run a specific test on my server using a program that can run multiple requests (using Webbrowser control) at the same time but with different proxy settings.What I am using now is working but only for one webbrowser control, im seeking advice for how to run multiple side-by-side.
<Runtime.InteropServices.DllImport("wininet.dll", SetLastError:=True)> _
Private Shared Function InternetSetOption(ByVal hInternet As IntPtr, ByVal dwOption As Integer, ByVal lpBuffer As IntPtr, ByVal lpdwBufferLength As Integer) As Boolean
[code].....
View 1 Replies
Jan 24, 2012
I'm working on an application to open pdf files using either the AxAcroPDF or WebBrowser controls.Preferably I'd like to end up using the WebBrowser control, however, I'm having the same errors using either and I need help in resolving this.The following error only occurs at runtime - not in debug mode:
"The instruction at "0x0546622z" referenced memory at "0x00000014". The memory could not be "read".Click on OK to terminate the program.The error only appears if the form containing the AxAcroPDF control is opened.However, if I run the program and not open the form then click on the button to exit the application, the application exits without errors. I've tried calling AxAcroPDF.dispose() both on the button.click event and the form.closing event
[Code]...
View 12 Replies
Nov 10, 2010
Get Webbrowser Controls HTML I can get the current browsers html, however, when the page is updated via ajax, or has another form popup, it dosent see this new data.
Is there a way to get the new html that was added by ajax to the current docuement?
View 1 Replies
Nov 18, 2010
This time I am stucked with a JSP page which is loaded in my webbrowser control. I have checked that it has been loaded. But I am unable to locate any of the controls of that page. Even in the count of any html controls it displays me 0. The page contains two frames and there is no "iFrames". Has Javascript got do anything with this?
View 2 Replies
Nov 12, 2009
First off I'm using the Extended Webbrowser control from: [URL]
I use the Webbrowser control to access an ESRI web based mapping solution. When the ESRI map is loaded into an IE browser and the browser is resized then the map control resizing accordingly. When my Webbrowser control is resized the map webpage is not resizing properly.
I don't even know where to start with this problem. Is there some event that's not firing in the website? I can't simply refresh the whole website because the user may have panned and zoomed around. I want to just tell the website that the container control (Webbrowser control) is resizing now.
View 2 Replies
Jun 4, 2010
I have a program that autologs itself into facebook and monitors posts to my main page and tells me if anything new comes up. Every minute my program refreshes the page and searches for a new post, if my session is expired it logs itselft back in automatically. If I'm in explorer trying to play farmville and my facebook monitor program is running then I'm forced to log in about every minute because my login at the browser kills my vb.net program session.
Then my vb.net program logs itself back in and I'm out! This behavior doesn't happen If I have two browsers running I can log into both and it doesn't seem to effect the other. I can even have my wife log in from another machine while I'm logged in and It's ok. So The question is why is useing the webbrowser controls in the Vb program any different then just having 2 open and logged in browsers and jumping between the two.
View 1 Replies
Oct 28, 2009
my webbrowser controls shows an error msg when it detect errors in the page navigated, but i want it to be silent, i don't want to see any warnings.
View 6 Replies
Nov 18, 2009
This gives me an error.CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homepage.ToString)
View 4 Replies
Jun 7, 2012
i am trying to create a dll containing a webbrowser control. What i want it to do is this: i have a form which calls a function from that dll. the dll naigates to a webpage, say "www.google.com". after it navigates, it reads a string from the page body and executes some actions with it. The problem is, when the form calls the function inside the dll, the webpage is not loaded inside the dll, so there is no string to read. If i run the code of the dll as a windows application, the form loads, it navigates to the web site and reads the string... how should i modify the code inside the dll so when a form calls the funtion inside it, it first loads the webpage, and after that execute the called function? a sample of the code is here, this is the code which i compile as a dll:
Imports SpeechLib
'Imports System.Speech
'Imports System.Speech.Recognition
[Code].....
View 4 Replies
Mar 22, 2010
I want to know if I can create a WebBrowser through code in Vb.NET, instead of dragging a webbrowser into the form.
View 2 Replies
Oct 21, 2011
Trying to create a set of controls that can be used repeatedly without copy and paste code, including a textbox, a set of radiobuttons and then another textbox. Having a major problem in that I can only get one radiobutton to show up.
vb.net
Public Class QuestionDisplay
Inherits Windows.Forms.GroupBox
[Code].....
View 5 Replies
Feb 15, 2012
What would be the best approach to create the following: A groupbox that contains several labels a groupbox with an array of 8 labels in it
Then the main form would have 4 of these groupboxs (object?) and I would need the ability to change the color and text of all the various labels within any of the groupboxes, using an index similar to what we could do with control arrays in VB6.
I would think an object would make the most sense but can you have control elements in an object and display them on the form?
View 4 Replies
Jun 21, 2010
I want to create controls in runtime and attach them to an already connected database..
the controls must vary e.g.Array of Strings can be used.
how to place these controls on a panel in a orderly fashion.
View 16 Replies
Mar 19, 2011
I would like to expand my knowledge of VB.NET and was looking at creating custom user interfaces or custom controls. The type of things I am thinking of is: [URL]s. How are those controls created? I imagine it involves using the existing controls in Visual Studio as a starting point, and altering them to suit your design?
View 2 Replies
Jun 13, 2010
I found a nice controls used by a software so wanted to use or build similar nice looking controls for my applications in vb.net. url...Yeah I tried enablevisualstyles but it didn't show any difference. Do i need to run other commands in conjucation with it? I found my program still displaying same old look but other one application showing office 2007 look.
View 1 Replies
Jul 18, 2011
I was wondering whether or not I could create a web browser using the webbrowser and the tabcontrol to make it where I could add tabs like in the newer browsers. Or should I just create a bunch of buttons with images and a combo box as my webbrowser?
View 9 Replies
Mar 26, 2012
I'm trying to enable tabs funtionality in the WebBrowser control. I have a TabControl hosting WebBrowser controls in each tab. And a multiline enables Textbox to enter the sites. It looks something like this[code]...
It adds the WebBrowser control to the TabControl at the SelectedTab position. Since the default selected tab is the first, it only adds it to the first tab therefore executing only that browser.
I want to know how I can select the next tab from the loop as the SelectedTab so that when the loop runs again and again, it would keep adding WeBrowser controls to each tab.
View 1 Replies
Apr 1, 2010
How can I create webbrowser mouse events (mousedown, mouseup, mousemove)?
View 2 Replies
