I currently have a browser go through the same list of sites one by one and gather updates. The problem though this takes awhile. Can a browser be multithreaded, (so it could visit several sites at a time) and if so would this take up a lot of server resources?
View 2 RepliesI have a basic question about timers, that I can't answer myself. It's annoying me. My code is made to visit a website every X seconds. There are two problems.
I Set the interval for 30 sec and the first visit should be right now, not after 30 seconds.
After that, wait 30 sec and navigate to another one (in a listbox). The problem is that the Timer is not waiting that time after the first visit.[code...]
I am creating a security program. One of its features is that it blocks inappropriate web sites. I might need help determining which sites are bad and which ones are good. If I could 'read' every work that is displayed in the browser then I could tell, but that may come later.
So, I'm looking for some kind of hook that will allow me to cancel the site if needed. It should be able to still be hooked in Safe Mode, as well... I'm sure that this is going to be an easy one!
I have just written an app in VB 2010 with .NET 4.0 that contacts our field loggers to collect data via modem or IP. Originally it was written without threading, but now the requirements have changed and I need to collect data simultaneously from 4-6 sites at a time. I have never used threading, TPL, etc. Can anybody tell me where to begin so that I can concurrently run multiple collections?
View 6 Repliesi was wondering if there is any way to visit a blocked website using visual basic 2008. i want to use during school in programing class.. just to let you know my teacher said he will let us get by with it, if we could even make something like this.
View 8 RepliesI want webbrowser to visit multiple urls that I filled in List(of String). I use a for each loop to iterate over the List, but the webbrowser only show the last url ask.com. I want webbrowser to visit and display all the urls.
Dim UrlListArray As New List(Of String)
UrlListArray.Add("http://www.google.com")
UrlListArray.Add("http://www.yahoo.com")
[code]....
I have a thread executing the following:
vb
Do UpdateVis()
System.Threading.Thread.Sleep(Interval)
Loop
UpdateVis is as follows:
[Code]...
I am trying to successfully multithread a piece of software I have been working on. I have an array of threads 'gen' already working, calling to a method taking a single integer as a parameter (done via typecasting).Now in this thread, when the function gets processed (for each thread a roughly 500 iteration while loop) the index seems to be getting mixed up. As far as I can tell, my threads are messing with eachother and warping values. Now this is happening in locally declared variables inside this function, not global variables.It may be useful to know that I am using a WebRequest via a call to another method. Don't know if that makes a difference or not.
View 7 RepliesI'm trying to manipulate something that is in a different thread, and I know I need to do something by the way of Invoked procedure, but I'm unclear on how. I looked up some examples here on the forums and tried to follow the basic template, but I continue to have the same problem. how to use invoke correctly.
Private Sub getMessage()
For Me.infiniteCounter = 1 To 2
'Try
[CODE]...........................
I am doing this within a thread:For Each item As ListViewItem In lvUsers.Items and I am getting: Cross-thread operation not valid: Control 'lvUsers' accessed from a thread other than the thread it was created on.I have been able to adjust a control in a way using something like:
Public Delegate Sub ListAddNameInvoker(ByVal text As String)
Public Sub ListAddName(ByVal text As String)
If lvUsers.InvokeRequired Then
[code]....
But how do I get data from a control and pass it to another thread?
For the past year-ish i have pretty much mastered the httpwebrequest function of programatically logging in to 1 of my websites to retrieve data, while it works well i was thinking about the webbrowser function, would i be better sticking to the webrequest route? it looks like the webbrowser requires much less code which is good lol can the webbrowser do everything httpwebrequests can?
View 1 RepliesI'm making a program but I don't want people to abuse it, it loads a site and then refreshes it. People can abuse this by getting views for a game and what-not. What code can I use so that the webbrowser only loads the homepage and not some thing like
View 4 RepliesI 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]...
I've just finished making a web browser suited for my personal use, but when I click on a new link or something it opens a new window in Internet Explorer - which gets extremely anoying.. Is there a way to make all links open up in a custom browser?
View 19 RepliesIm currently writing a code that can log ALL of the IP(')s that view a site. I kinda want a code that goes something like
Timer1.tick
textbox1.text = textbox1.text + loggedips.
Or something similar is fine also.After that I want the logs to be saved into a txt file, (I can do this part)Then the user will enter a new site to be logged. Once that is done that will also be saved into a txt file. Etc....Then finally if any IPS that are the same show up in the text files then the user will get that IP in a textbox.
I'd like to know if there are other ways to write a submission program (submitting urls or pad xml to directories, submission sites, blogs) other than using the webBrowser. I've evaluated some shareware programs that submit urls or data very quickly, like 100s in a matter of mins. I couldn't write a program using a webBrowser because it might take 15 secs just to load the url. How are they writing the code??
View 1 RepliesFor example I want it to go to one page then when it finishes loading go to another. So I want to to go one from one from one all with the click of a button. Is this possible?
P.S: Another question, just to kill two birds with one stone, how do I make it so whatever is written in a textbox is added to the browser url. For example if the users write 'xyz' that it will add it to Google.com/ as an example and make it Google.com/xyz?
MVC3 vb.net. In my app I have a point where 500+ emails with attachments are sent out using a for each loop to accomplish this.. Nothing is returned to the browser the entire time this is running so eventually the browser think it has timed out... I tried just having it redirect to another actionresult function after every email and that function just passes it back to the email function. This is not working and I feel the reason is that nothing is actually being sent to the browser window its self.. Is there a way to fix this issue??
[Code]...
Will the elements in myList always be visited in the same order with a For Each loop (assuming I don't alter the list)?
Dim myList As New List(Of MyElement)
....
For Each myElem As MyElement In myList
' yadda yadda yadda
Next
I'm making a type of download manager which downloads parts of a file using HTTPREQUEST.addrange. The parts download without a problem and currently I use 5 instances of the same class to download the parts simultaneously each one downloading a different section of the file. Now my problem is that I don't want to save each part as a file then merge them later, I want to use a singular filestream and append everything asynchronously. In the code below I attempted to use the seek method but it feels like it changes the seek for all of the other parts as well.
[Code]...
how do I multithread using timers. For instance 3 picture boxes that change ever 3 seconds?
View 1 RepliesI have client/server app.I have a class for the tcpclient and a class for the tcplistenerIn my tcpclient class I have a system.timers.timerThe timer elapsed event fires a public event(in the tcpclient class) which the tcplistener class handles.During debugging I see the timer firing its elapsed event and calling raiseevent on the public method, yet the event is never fired in my tcplistener class.
View 1 RepliesI'm working on a project. It is a windows form app which has a webbrowser. The app navigates to a url automatically, checks the url's document, and jumps to another url (depends on the document). It works fine. But, now, the problem is the project needs check many urls, so, I'm trying to make it as a MDI form project. when the start button clicked, it create a control thread, in the thread, it launchs 10 MDI forms (within main form), each form does the work for different urls. once done, then launch the next 10 urls.
It works. However, I noticed that, although 10 MDI forms are open, the navigating part in their webbrowser seems run in sequencial. I thought these 10 MDI forms will load 10 urls at the same time, do the work at the same time, but I found that it seems they do load urls one by one, not at the same time.
so, I did some research, it seems webbrowser can only be run STA mode. does it mean I can not use multithread to load different urls at the same time?
basically, I want to have a multi tab webbrowser, and navigate to different urls in these tabs at the same time.
I have a multitude of VB .NET programs that generate reports in Excel that I populate from an SQL Database locally. My boss wants me to port all these to ASP.net so that users could then access these reports with dynamicly generated results on a browser page.Before jumping onto imbeding Excel objects using ASP.NET from the code I have in VB .NET I was wondering on what kind of approach to use. What could be the most effective way to convert/display these reports in real time to the user via a Browser?
View 1 RepliesHow would one be able to sync the cursor on a web browser to the html placed in a richtextbox?I am able to get the source code of a web page and put it into a rich textbox.How can I setup a caret to sync up in real time with my mouse on the web page?
View 2 RepliesIs it possible to use a file browser to load a connection string when the start form is loaded?
Using ofb As New OpenFileDialog
If ofb.ShowDialog = Windows.Forms.DialogResult.OK Then
Dim cConnectionString As String = ofb.FileName
[Code]....
I'm trying to build a small application that will automatically visit a few websites. The list of the websites I want to be stored inside a txt file like:
website1.com
website2.com
website3.com
and when I press the "Start" button, my application will open the websites from the txt file, one by one with a delay of 10 or more seconds before loading the next website, in a webbrowser control.
I'm looking to be able to open a .txt file (with sites 1 per line) and visit all of those sites silently while moving a progress bar.
View 4 RepliesIm new on vb.net 2010 coding. i am making a project for my college.
How i can get components info each and every time i visit any drive or folder on my computer...
An example: such as when i go to C drive a pop up will be appear that how many files are there and what are the size of those files if files are exist.
I want to write a program to manage my pets and vet visit information. I have areadycreated a database but I don't like the interfac
View 2 Replies