trying to show 'loading' text while performing selectedindexchanged with backgroundworker
but it is hang in 'loading' and result does not show :(
Private Sub cbPortNo_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbPortNo.SelectedIndexChanged
[Code]...
I have build a VB.Net windows application which does uploads data into database and basically updates two controls:
1. A textbox which is constantly updated with one line per database record upload.
2. A label which keeps track of the count of database record uploaded.
I have used BackgroundWorker thread concept, where the thread's bgwWorker_DoWork() method contains the business logic for upload and bgwWorker_ ProgressChanged() updates the 2 UI controls based on uploads.But the issue I am facing is that I do not get complete updates on both the UI controls. Sometimes the thread bypasses update of textbox and sometimes of label. I could resolve this issue by adding System.Threading.Thread.Sleep(25) before each UI control update code.[code]
I am using backgroundworker thread in my app. I also have a class in my project and am able to updated the user UI from the form, but most of my time consuming operation happens in the class so I tried to do an update like this Form1.BackgroundWorker1.ReportProgress(4, strname), but I get an error that say that the backgroundworker is not set to report progress.
I have this set in the load event for the app.Are you not able to call form items like this from a class?
I have some issues with background worker progress reporting functionality. I'm implementing a progress indicator and even if I marked the backgroundworker as report progress (true), it won't report progress until it finish the job.
The code is like this:
Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
action_1()
[code]....
The result is as expected (label1 with 100 value) but only when worker finished all the steps. If I'm triggering a messagebox in ProgressChange I see two message windows at the end of DoWork handle.
i have a standard login form that allows the user to enter username and password and click OK or cancel. I have a progress bar called pbLaunch with the visible property set to false and the animation set to marquee. when the user clicks OK i would like to run a separate thread called bgwProgress that makes the progress bar visible and fires up the marquee just to show that something is happening while form1 loads up.....so far i'm stuckn the ok click event i have the following:
Try
Dim bgwProgress As New System.ComponentModel.BackgroundWorker
bgwProgress.WorkerSupportsCancellation = True
[code].....
I have created a simple Backgroundworker process to copy a large file (30GB). Is there any way to report the progress of that file copy?
I'm using System.IO.File.Copy to perform the copy. I've seen a few posts/blogs that suggest comparing the bytes copied with the size of the source file but that seems like a huge overhead in this case.
Got a bit of a weird problem with a progress bar. I'm using a backgroundworker, which calls a "Process" function in a different class. The function goes about its business, and sends an update back to the form displaying the progress bar. What I'm finding is that its doing everything right, except update the progress and a label on the form. I've put breakpoints in to check the values of variables being sent to the form, and they're correct. I've also checked the value/maximum of the progress bar during the same break as I step through, and they're being set correctly.
they're just not displaying their updated status. I've tried refresh and application.doevents, to no avail. When the backgroundworker is complete, the values of the progress bar/label are as if I've never touched them! When the worker is complete, the Close button is enabled, so I know its finished. Anybody got any pointers/thoughts on this because I've been battling with this for a day and a half so far. I'm using the same technique as I've used elsewhere in the app to do similar backgroundworker progress updates, but this one refuses to work properly.
It is possible to create progress bar like moilla for winform application code in VB.
View 3 RepliesI 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]...
I am currently trying to develop an application which will backup large folders to a specified destination. To find all the files in the specified 'backup' directory I am using the following code.
[Code]...
I have tried putting my GetFilesRecursive function into a separate background worker to run first so I can update the GUI however I am struggling on how to return the List of found files back to my application (I get cross-threading exception) and how to update the progress bar to show the progress of the GetFileRecursive function so the user knows it is processing the list of files and has not crashed/frozen.
how to make the loading bar or progress bar.<input id="gwProxy" type="hidden"><!-- Session data--></input> <input id="jsProxy" onclick="jsCall();" type="hidden" />
View 4 RepliesIs there a easy way to show some form of progress bar on your form in ASP.NET that the code is busy running in the background (meaning thinking)? Like the default I.E have the small little window on the top that moves when its thinking
I have done this before with Ajax but its alot of work and my site is not a Ajax enabled site.
I was wondering how to make a progressbar's value be the progress of e.g. load time of a program or progress of sending an email etc.
View 3 Repliesmy progressbar is retarded when i try to show progress of page loading
Private Sub WebBrowser1_ProgressChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserProgressChangedEventArgs) Handles WebBrowser1.ProgressChanged
[Code].....
Value of '-1' is not valid for 'Value'. 'Value' should be between 'minimum' and 'maximum'. on e.currentprogress
I am trying to run a routine to load a gridview from a sql table. I would like a progress meter to run until the grid is loaded. I have tried using the background worker component...but I havent found a really basic example of how to run the progress meter on the uiwhile loading the grid in the dowork event.. is this as intricate as it looks? I just have the meter tied to the tick event of a timer
View 2 RepliesI need a progress bar to show the download progress of a file from the webbrowser control.
I want the default popout download window to not show and to show the progress bar
somewhere else, and show the time remaining. Basicaly what I want is for my info of the
window that shows download progress and info to show on the default window of my program.
im making a web browser, but i dont know how to make a progress bar load when im loading a page. Please note that im using TabControl, so you cant use the WebBrowser function.Also i was wondering if you could add that little thing in the bottom left that says "connecting to http://..." and "transfering data from..." etc.
View 13 RepliesI need progress bar, I want it to load when i am loading a webpage (I am making a browser). I am using TabControl.
View 3 RepliesI want to use a progressbar while loading, which means I need to COUNT.
vb.net
Dim mysqlCount As New MySqlCommand("SELECT COUNT (*) FROM tableName AS tableCount", mysqlConn)
Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '*) FROM tableName AS tableCount' at line 1
I really don't understand why this occurs. The connection works fine btw. So no issue(s) there.
I am trying to add Images using open file dialog and folder browse dialog and populating the image list to listbox.While adding these Images I need to show the progress bar for every image it loads.
I am trying to get that but when the value of the progress bar say something around 25 0r 40 it is stopping at that point but I need to show the progress bar until it completes the 100% and then populates the Image list.
Here is my code:
Private Sub AddImages_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddImages.Click
If Not Directory.Exists(Application.StartupPath + "Backup") = True Then
[Code]....
searched the web but cannot find any type of code that will allow me to implement a loading circle.or can vb2008 allow me to change the look of the original proress bar?
View 35 RepliesI was wondering if this was possible, if so can you point me in the right direction? "Display the progress of loading a txt file into a listbox with ProgressBar".I am basically loading a file (blah.txt) which contains several strings each on their own line:[code]I would like to display the progress of the listbox loading within a progress bar.
View 8 RepliesI am trying to read a text file into a text box, and show the progress bar loading. Sometimes if the text file is big, i don't know when it will finish reading it. This is basically the code i use to read a text file, but i don't know how to show the progress bar.
[Code]...
in my button click event i ececure
If BackgroundWorker4.IsBusy Then
BackgroundWorker1.CancelAsync()
End If[code]....
after proceess completed if press the button again.i got the following error msg
This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
im making a web browser which is intertwind in a project, but i cant get the progress bar to display the current percent of a page that is loaded, i want to have 10 segments, each standing for 10% of the total page loaded. So say a page is loaded 67%, 6 out of 10 of the segments will be shown.
View 3 RepliesI am trying to implement a BGW and want to report progress to a progress bar for my TextFieldParser program, sometimes if your opening very large files it takes a while and I would like the user to be able to see the progress and have some interaction so they know the program is still running I am a little hung up on what to in the reportprogress
I have:
worker.ReportProgress(0, myReader.ReadFields())
and its not doing anything, I didnt expect it too since ReadFields is an array
parser
Private Sub BackgroundWorker1_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
Dim worker As System.ComponentModel.BackgroundWorker = DirectCast(sender, System.ComponentModel.BackgroundWorker)
[code]....
I copied the code here and translate the code to vb [URL]it is working fine but there is one small problem but I cannot solve? Here is my code: SyncClientVB Another Source The scenario is... the progress is reported by an event (OnCopyingFile event)
Public Sub OnCopyingFile(ByVal sender As Object, ByVal e As CopyingFileEventArgs)
If pbFileTransfer.Value <> e.PercentCopied Then
If txtCurrentFile.Text <> e.FilePath Then
txtCurrentFile.Text = e.FilePath
[code]....
The problem is that it is ok when runned but when I click the form it starts to hang but in the console... it is still continuing.
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('6f5d1b01659646618ff3bdca29fb1b7f')
get the progress bar show the progress of the batchfile running in the background?
View 10 RepliesI have two forms, when the user selects a button, the second form opens and an external executable begins an automated process. The point of the second form, is to only show the current progress of the automated tasks and closes when those tasks are completed.How would I use a progress bar to show the current progress of an action on a different form without knowing how long it will take?
View 9 RepliesfrmMain - Allows user to pick process or combination of processes they want to run frmProcess - Shows progress of their selection I have three modules. Each runs a specific process. The frmMain allows the user to run any one of the three modules individually or all together in a single process (basically, runs the one after the other until done).
[Code]...