VS 2008 ProgressBar Integration To BackGroundworker
Feb 22, 2011
I am trying to use the background worker to keep my application responsive during the calculations it does. All I need is one to calculate and the other to count time which I use a timer for. But when I try to use a progress bar as well as I want to see the progress it gives me an InvalidOperationException: Cross-thread operation not valid: Control 'ProgressBar1' accessed from a thread other than the thread it was created on. I need this to work, how could I use a component from outside the background worker? This is the background worker bit:
I have to write a program that retrieve record from database, but everytime the screen will look like getting hang when getting large row record.I using the backgroundworker to prevent screen hang when retrieving record from database but why my progress not working when in progress? It only will show when the transaction done..
I've got a form that has a ProgressBar on it. The Style is set to Marquee. In the Form.Shown event handler, I call BackgroundWorker. RunWorkerAsync(). In the old version, while this is occurring in the background, the ProgressBar is scrolling, which is exactly what I want.I copied over not only the code from within the file (i.e., the logic code) but also the code from the designer file. So, from what I can tell, there should be NOTHING different between the two files. However, in the new version, the marquee scroll doesn't occur.
how to load data into datagridview using backgroundworker & progressbar?Let's say i have a report that shows some statistics, or has 100 000 of rows that should be displayed and during the load i would like to show the data that is already loaded and not to frees the form.Same example like in SQL when you perform a select command from a table which has 100 000 of rows and while loading the data, the grid is already filled up and progressbar is shown at the left buttom side.
[Code] This is run from inside a backgroundworker. It throws an error, Cross-thread operation not valid: Control 'pbUpload' accessed from a thread other than the thread it was created on. I have read and read and searched and basically come to the conclusion I am going to have to invoke the command but this is new area for me.
I'm using Windows XP and VB.net 2005. I've search for information on how to use the BackgroundWorker to display a ProgressBar during a process and thought I had it correct, but appearently I don't - the bar never shows, much less moves. My goal is to have a Marquee Style progress bar display while my code is looping thru a query result populating a datatable that a DataGridView is binded. Here is my code.
I have a class that downloads a specific file from the net.This class uses a BackgroundWorker. I tried to implement kleinma's Download Files From Web With Progressbar [URL]../showthread.php?t=396260), but I'm having difficulties making it work. I'm including a test project, so if someone is willing to take a look at it, it would be great .
The part I'm having trouble with is updating the progressbar and progress label. The errormessage I receive is in Norwegian, but it has something to do with threads. I suppose I should use Invoke or something, but I don't know where to start..
1) I am trying to use background worker to download a large file and update a progress bar to reflect the changes as the large 5GB file is being downloaded, and also update percentage completed to the label.text(lblInfo).
2) As I was goggling I came across some info that a web client is needed to calculate the maximum size of the file and divide by 100 and you can stream it down with the web client. Reading it is one thing, implementing it is another as I spent week trying to get it to work.
UCPocoAPoco Imports System Imports System.IO Imports System.Diagnostics
the project is about this:there's a user interface(ASP.net web application) which is connected to a client / server program written in c (this program has to be in c).the c program works like this:the server has to be running, and its done by:
./server 1234 the the client tries to connect to the server by: ./client localhost 1234
when two modules are connected, different messages can be sent from the client to the server.now what i want to achieve is to send the command from the web application to the c program... so by a button click the c program would run and send the command...
In my Application, I have a Windows Media Player App integrated. Is their anyway I can have it so If a checkbox is checked, Then it will automatically start playing, And if the checkbox is NOT checked, then the user has to manually press the play button?
I am working on a project that requires us to create a bracket type tournament and I am now stuck. I linked my access database to my project, and have 32 labels (lbl1-lbl32) and I cannot figure out how to integrate the labels to read from my database. It can be random or not, I just cannot get the labels to display the names of the fighters.
After the labels are integrated, the next coloum of the bracket has a link that opens a new window with each of the fighters match results, does the link have to include anything particular to display the attributes from the database?
I'm doing a job in background (another thread) and do not know its progress, so I can't put values in progress bar. I'm looking for a progressbar that is just 'walking' from left to right and vice versa, until the job is finished (Microsoft uses it sometimes). Where can I find that progress bar?
I have a form with an Adobe PDF reader control.I point to a specific PDF I want to load when a button is clicked. The PDF is 28 Megs big and takes some time to load into the reader.I would like a progress bar to to show (like a showdialog kind of thing) so the user does not click all over the place and thinks the app is static.I have searched and read all about the progressbar and there are many articles dealing with downloading and moving files around but nothing in terms of file loading and how to get a progressbar to reflect the status of the file being loaded.[code]
How would I update the progressbar1 control to reflect the time it takes to load? I checked the AxAcroPDFLib Namespace and found no "progresschange" type of functions or events.Can some one please help a new guy out? I am fairly new to vb.net so please be as specific as possible.
I have a listbox in what I receive computer names from network, and I want to have a progress bar thet loads until the last computer is in the list. How do i do that
PS: i don't know how many computers are...some times there are 100 some times there are 150, and sometimes there are 48.
I got a progressbar in my game (Hpbar) and a lots of time the value go under the Minimum Value and it crash... Any way to make it go back to minimum value 0
I made a game and i made a hp bar.So i made a Heal button but when the value is more then the Maximum value it crash.Any way to fix that? Like something to bypass that go go back to the Maximum Value?
I am making a CSV/TXT file splitter. Upon selecting the file in openfile dialog, I have a function to count the number of lines in the file. I would LOVE to have a progress bar alongside it. Problem is, the maximum value (i.e number of lines in text file) will obviously be varied in different files. Anyway, I could I a progress bar for such a task?
I need to understand if I can integrate two applications... one which I purchase, and one which I will write in VB. What my application needs to do is to retrieve data from the purchased application form and then update back to the purchased form fields.
Perhaps this is nothing weird, but it is in my eyes. After loading the webpage I want to hide the progressbar on my ParentPage, but it keeps coming back. Here's an example of my
