Forms :: How To Update Progress Bar Within Class
Aug 12, 2010
I am wondering how do I update a Progress Bar that resides in Form1 (for example) from a newly created class called from the Button in Form1. I have read several tutorial about backgroundworker. Most of the googled tutorials have their "long process code" in the do_work event. I have tried them and got it working from within the form itself.
However, there are 2 parts (long process) in which I wish to incorporate the updating of the progress bar; First one being a long sub routine that is in the main form (Form1). The second one is another long processing function that resides in a class. It is the second one that is giving the problem as I have no idea how to call the backgroundworker.reportProgress() to update the UI.
Here is the sample flowchart that I have created for the second long processing function:
I wish to insert a new instruction that says "Update the Progress bar that is in Form1" after the current instruction "Store the member into a collection".
View 4 Replies
ADVERTISEMENT
Sep 15, 2011
I am having trouble accessing the main thread (my form) when calling thread is running in a class (or module). I have no problem to manipulate a data (in a thread) from a form, the textbox can be updated using delegate and invokerequired but it doesn't seem as easy when the thread that processes a variable is handled by a thread that is running in a class.
[Code]...
View 4 Replies
Sep 28, 2009
i have been working on an app and now have got to the point i want to let people test it i know how to use the click once auto-update but what i want to do is display the auto-update progress with a form that shows :
ProgressBar - Label displaying % - label displaying Current Process
label displaying Current Process EG Downloading file - copying file to directory stuff like that how would i go about setting this sort of thing up
View 3 Replies
Apr 2, 2010
I have a progress bar on a Windows Form which displays the number of records as they are retrieved from the database.The problem I'm having is that the entire Form.Load() method seems to run prior to the form being displayed, which means all my code updating the progress bar is gone to waste.
View 4 Replies
Mar 6, 2012
I am writing some data to my Database using TableAdpater.Update and the operation can take up to one minute to complete.
Is there some way to report the progress of this to the user because they think it has stopped responding.
View 1 Replies
May 28, 2012
I am using a background worker to update a progress bar while inserting data in a database.
Private Sub InsertintoDB_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles InsertintoDB.Click
BackgroundWorker1.RunWorkerAsync()
[Code]....
the error i m getting is exception has been thrown by the target of an invocation.
View 6 Replies
Aug 13, 2011
Currently, I'm testing the timer function.
I used the following code for my form:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
View 4 Replies
Jun 23, 2009
I have a program that downloads information from another class, specifically it collects domain names.So i have a class called domainscraper....on my main form I have a background worker and progressbar, and i put this in the dowork event:DomainCollector.GetDomainsByMethod(parameter)Now my question is, how could I report progress to my progress bar on form1.vb from that method I use in the the domainscraper class (domainscraper.vb).
View 5 Replies
Mar 12, 2010
When I do this
Public Class cInherits : Inherits Panel
I get this: Base class 'System.Windows.Forms.Panel' specified for class 'MenuButton' cannot be different from the base class 'System.Windows.Forms.UserControl' of one of its other partial types.
How do I inherit?
View 4 Replies
Nov 6, 2009
I am unable to crack this as the end user requested to show some kind of progress bar while running a long time method or an update statement. Kindly suggest me on this ASAP.
View 5 Replies
Aug 6, 2009
i wanted to update my status to indicate e order is delivered or progress in my database and the form itself. so i decided to use progressbar. but im not sure how the coding going to works. or is there other alternatives suggestions on how im going to update my status?
View 13 Replies
Nov 4, 2009
I have a function that requires 10-15 min to run. Due to sheer amount of time required to run this function, my form freezes and the user is left clue-less about what is happening to the program. I understand that this problem can be overcome using Background class and Progress bar.
View 8 Replies
Dec 19, 2010
I am running a test program for VB.NET, and it will simply crunch a million numbers in for loop. I've linked a variable implying the progress of the for loop with the progress bar, but it seems that when I run the program, the progress bar does not update itself. The bar itself has only value 0-100 as input (as stated in the document) and I've tested it without using the for loop, and it works.
View 2 Replies
May 3, 2012
I have several reports that all merge onto the same datatable. The user can click several to run and then hit the 'find records' button to run them all simultaneously. Since they each take so long, I'd like to update the user on the status bar as each of these stored procedures is called successfully. However, when I call the procedure, i only get one update at the very end listing evertyhing.
[Code]...
View 1 Replies
Nov 15, 2011
I have a VB.NET 2010 app that uses a backgroundworker to process MS Word docs. All of the code does what it is supposed to do, except when my code calls ReportProgress(). The UI cannot process the ProgressChanged event fast enough before the values in the class that are passed are changed. I know this because I inserted a System.Threading.Thread.Sleep(100) line after each ReportProgress() call which allows time for the UI to make the updates properly. I guess I am looking for a better solution thanThread.Sleep(100) since this adds to the amount of time it takes to process all of the files. Here are some snippets of code that I am using:
[Code]...
View 5 Replies
Jul 9, 2010
2 questions:
1. How, programmatically, can you tell if a progress bar is at its max?
2. If it's at it's max, how can you reset it to zero?
View 1 Replies
Jun 21, 2010
Ok, I have a usercontrol in a Class Library Projects which contains a Button, 2 Listboxes, and a Progress bar. My code is to look for a file and if its there post to one listbox and fill in the progress bar and also put the programs current task in the other listbox. Recently, I started using VB.Net 2010 Express and wanted to turn part of a form into a .dll so it would be easier to update. I started getting a error and had to declare a variable as a New instance of UserControL1 (my user control). When I did this, the control would run, but the Progress Bar doesn't fill and neither of my listboxes show anything. What Should I do?
View 1 Replies
Jul 2, 2009
currently i am using a threadpool that contain a number of thread. This number of thread can be different everytime, sometimes 5, sometimes 10, sometimes 15 and so on (multiple of 5). So now i have it working good by using for loop to queue the thread into threadpool. Now the problems is i do not know how to make the progress bar depending on my threadpool. I want my progress bar to complete only when all the thread are done. After searching google, i found that maybe it can be solve by using AutoResetEvent(false), but after i apply to my program, it still did not work, my program hang at xEvent.WaitOne() method and didnt proceed further, anyone can explain to me how to solve the problem? Or got any other ways? For your information, only 5 threads can be running at the same time as the requirement state so (so i set the setmaxthread to 5 already).
View 1 Replies
Nov 30, 2010
i have a form that takes a long time to open (because of the volume of data and the devexpress scheduler controls on it). I would like to pop up a progress bar (embedded in a form) to show until the form loads and is finished loading.i added two public methods in the My.MyApplication class...the form with the progress bar shows, but is stuck and doesn't animate.i figure that i need to open this form in a separate thread, but have done no work with multithreading.[code]is there an easy way to make this form always open in a different thread so that it will animate and show my "loading.."
View 3 Replies
Jun 11, 2011
I have 1 form with the progress bar and 4 buttons with the following code.I would like to create another form that shows the same progress bar with the same progress.Here's my code for progress bar....form load code is:[code]....
how do i get that progress bar to be show in another form?
If form2.ProgressBar1.Value < 100 Then
ProgressBar1.Value += 20
End If
View 1 Replies
Mar 18, 2011
Im having some trouble with my progress bars in VB.Net. I am currently making a 2d game for a college assignment. The problem is i have one for health and one for reloading the reload bar works fine but when i try to code the health bar i think it conflicts with the other Progress bar [Code]
View 3 Replies
Aug 6, 2009
I want to make a progress bar for the loading of a webpage? Anyone know the code for that? I know now...
View 1 Replies
May 11, 2009
I want to make an app that gets the progress bar to 'pulse'
My code doesnt seem to work though!?!?!
Public Class Form1
Dim Value
Dim NoValue = "Add"
[Code].....
View 3 Replies
Aug 15, 2009
I am new to VS 2008.. It is possible to change the progress bar loading color (green) to other color? How to change it?
View 3 Replies
Dec 17, 2009
so what I want to do should be pretty simple. I've been following the examples found here Using the BackgroundWorker Component - VBForums . I've been successful, but I'm not smart enough to put it in my project.
What I'd like to happen is this
1. I hit a button to load data from a dataset....
2. have a progress bar show until this action is complete.
The main problem is that I can't figure out how to tie the "progress bar" to the action of "pulling the dataset"
I'm sure this is a crazy question for you all, but hey...
Would I put all of the coding in the button_Click sub?
View 9 Replies
Dec 21, 2009
I'm using vs2008 programming in vb.net. I'm currently working on a project that reads miscellaneous text files and imports data into a sql database accordingly (Reads line, imports, loops until finished). There are 75k-150k imports to do. I tested it out the other day before using a progress bar, it takes about 5-10 minutes and works fine.
The issue I have is that while importing, if you click anywhere on the form, it will say not responding and will continue to import, but users using the program might be mistaken and think the program has locked up. I thought a progress bar would solve this, since it is responding back while the imports are going on in the background. However, the progress bar works, but as soon as you click anything on the form, it again says not responding and the progress bar stops moving (the imports will complete however). How can I isolate this import process so it can do this in the background, but will not affect the rest of the program?
View 16 Replies
Feb 11, 2011
I have 1 form with the progress bar and 4 buttons with the following code. I would like to create another form that shows the same progress bar with the same progress. [Code]
View 1 Replies
May 3, 2011
Is there anyway to complete a progress bar just by going ProgressBar1.Value = 100 when you want it to finish. I have a button which starts a countdown, I need the progress bar to complete when countdown reaches 0. Ive already used the step version, but when I want to alert the length of the countdown, the progress bar finishes too late or too early.
View 13 Replies
Jul 2, 2009
hat i am trying to accomplish is execute a dos command with the following
frmStatusBar.Show()
' Set start information.
Dim start_info As New ProcessStartInfo(sOutput)
[code].....
View 6 Replies
Apr 29, 2010
I have created a form in which i am loading thousand of records. so i want to display a progress bar.Actually i am moving from MDI main meny to some other form so when i click that menu item i want to progress bar till my total records are not loaded.
View 3 Replies
