Here is my
frmMain.tsProgressBar.Value = 0
frmMain.tsProgressBar.Maximum = 100
Do While byteCount > 0
EncryptCryptoStream.Write(buffer, 0, byteCount)
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For some reason, the code to update my progress bar is not working. I uncommented the Msgbox line, and a message is only displayed at 100%. Why is this?
I have a progressbar which receives the amount of Sub directorys within a main directory as a Maximum value and when i run the program It goes through the directorys to grab all the files within the subdirectory.
This is the code below which is updating the progressbar.Foldercount is an incrementer which increments by one for each folder it enters.
Dim percentage As Double = folderCount * 100 cirFolderCount.Maximum
cirFolderCount.Text = percentage.ToString
cirFolderCount.Value = Convert.ToInt32(percentage)
On the test directory which has 4 sub directorys I get a maxvalue of 4 and the min value is set to 0 The code above returns the value of 25.0 when entering the first folder which is correct (25% of 4 is 1),But the progressbar does not fill 25% of bar once this folder is processed.
I guess that I should preface this by saying that I am totally new to VB, but I come from the PHP/MySQL world so I can work my way through things syntactically. That being said, I have made a program that expedites a few things that I do on a routine basis at my place of work. However, because I have no idea what I'm really doing, my app logs up while the UI thread does all the background work.
What I am trying to accomplish, is a few things. Have multiple functions/subs [done]Somehow generate a generic method that executes a sub when called (one at a time, always)My already coded subs return values (for updating a progress bar for example) but have the background thread that spawns the function, update my UI threads progress bar / list box with the output.I guess I want to know if this is even doable, and secondarily, how would I go about doing this? I understand the idea of threading, but all of the tutorials that I have seen / read are pretty convoluted.
I'm using VS2010 (VB), Framework 4.0 and although I'm incrementing my progress bar value between steps, the progress bar only shows the initial value. I've set the minimum and maximum properties and the initial value, but no luck. Here's a brief summary:
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I have been reading examples of using a progress bar with a background worker. All of the examples utilize a loop which is the easiest example of a progress bar. However there is the part of my code where I would like to use a background worker and progress bar. This part takes some time, thats why I want to use it. Basically its part of a DB front end where I am clearing oput 2 tables, getting data from another DB and populating the first 2 tables with the data from the first. Below is my code. How would I update a progress bar without a loop
View 1 RepliesI have recently seperated some code from my original Project and I have created a class library which is where my function resides.
originally my function was stored in my win form project and I could call this when needed and increment the progress bar for example
do
processing code
progressbar.value = x
loop until x > y
how do i do the same if my code resides in a seperate project (class library) ?
I have two forms:frmMain - Allows user to pick process or combination of processes they want to runfrmProcess - Shows progress of their selectionI 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).
View 7 RepliesI have a MainForm that loads a number of files and SplashScreen that is shown while the loading takes place. SplashScreen contains SplashProgressBar that I want to update as loading of the files in the MainForm goes on. I declared SplashProgressBar Public in the SplashScreen and coded a mutator for ProgressBar:
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I am writing my first app in VBEE and require your expert assistance.Once a button is clicked in my app, a number of queries in Access 2007 are run. I would like to display the progress of these queries and send text to a text box informing the user of the progress, i.e.[code]I have entered the Text I want to display but it does not update it as it progresses through the code, instead it updates all of the text at the end, once all of the queries have been run.I would also like a progress bar to display the progress of the queries [code]
View 1 RepliesThis is starting to drive me nuts. I'm executing a DTS package from a worker thread that is calling an EventListener class to update the background worker ProgressChanged sub. As instructed, the ProgressChanged method is trying to update a progress bar to avoid thread issues but it is not working. I know the EventListener is throwing events because if I put a message box in ProgressChanged I get the package progress %. Why can't it update the progress bar?
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My form has FOUR comboboxes populated from text files. The text files are loaded into an array into their own background process once completed are added to the combox. Due to the sheer amount of items the loading causes a lag and as the combobox are on the main GUI thread a glitch appear for several seconds. I then had an idea of loading the initial form, showing another form which is made the topmost form with a progress bar (values derived from the count of items in the arrays populated from the text files).
When I added the progress bar any other label or image on the SAME form did not show until the progress bar had completed, how can I resolve this? When I use it in conjunction with the other form i.e. using the form with the progress bar to populate the other in the background graphical glitches appear (mad transparency effect). I have the code from the form with the progress bar below:-
'Load City information
'*********************
'Set form title
Me.Text = " Application loading city lookup information ...."
'Declare string array to store list of towns
Dim citylookup() As String
[Code] .....
Why I experience the glitch (assume it's because of refreshing the item, some kind of repaint needed)? Any alternative solution to prevent the user from using the form until all the comboboxes are populated?
Looked through many tuts, can't find one.
View 1 RepliesI have the following function
Private Function GetMD5(ByVal file As String) As String
Dim md5 As MD5CryptoServiceProvider = New MD5CryptoServiceProvider
Dim f As FileStream = New FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 8192)
md5.ComputeHash(f)
[code]....
It works fine, but when working with very large files on the network my users sometimes panic.I'd like to add a progress bar that updates based on the progress of the hashing through the file.So, my choice are either to manually create the hashing process, which I believe will be much slower,or somehow tap in to the position value of the filestream and use that to update a progress bar.I'd be happy to tap into the events of the MD5CryptoServiceProvider if I could, but I don't see anything there.I have searched the net to try to find an example and have only found code that works by reading line by line from the filestream, not from it being passed to another control/service.
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.
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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.
I'm stuck on a progress bar problem. I just wanted to know how I would go about getting the value of a progress bar, and converting it to a string to display in a label. I am doing a task with the progressbar, and I wanted to know how to get the value of the progress bar, and display it in a label above of it.
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I've made a working progress bar but I'm trying to make it show a message showing 'loading complete' or something when it is 100% finished.[code]but this resulted in the message opening constantly and when they are all closed they stop opening?
View 2 RepliesI have a progress bar that I'd like to 'load' as a song is being played (I'm using Windows Media Player). I've attempted it but I haven't gotten very far, more specifically I'm stuck at setting the value of the progress bar to match WMP.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ProgressBar1.Maximum = AxWindowsMediaPlayer1.currentMedia.duration
ProgressBar1.Value = AxWindowsMediaPlayer1.Ctlcontrols.currentPosition <- This is where I'm stuck
ProgressBar1.Increment(1)
End Sub
Does anyone know how to do one?
View 10 RepliesI�m using a few workbooks in excel to calculate data and then I import them to access and finally I use it in visual basic front end.
Now the workbooks can get quite heavy and it takes some time for the computer to open and save and so on, so I�ve put a progress bar on my form to show the user that something is happening.
However I would like to use excels own progressbar, so that when the workbook is being saved, my app actually shows the progress of that particular save. Can I do that? The instance of excel that handles the workbooks is hidden.
I got a program that starts a batch file into a textbox and makes backups of my database things, I would like to add a progressbar to my program to see while the progress is running, here is my code, but its not working good at all, I mean, the progressbar one works, but it dont update with the files copied, etc...
Public Sub FAZERCOPIA()
Dim SW As System.IO.StreamWriter
Dim SR As System.IO.StreamReader
Dim i As Integer
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I've been working on an app for quite awhile and now am at the point where I have to incorporate an Access DB. Tried many things/variations of what I've found...but now am stuck. So here goes:
I have a Form with this
Public Class Form1
Dim objConnection As New OleDbConnection _
("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|Test.mdb")
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I'd like to make the form load, and then download a file from a URL to a designated path, and then make it's Progress to affect the Progress Bar. How do I do that?
View 7 RepliesI 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 am wanting the most efficient way to copy a file with a progress bar updating the copy percentage.
This is the standard copy code I am using:
System.IO.File.Copy(source,target)
This is very fast and efficient. However, I cannot report the copy percentage.
I have tried many functions that read and save a file by opening up the filestream and then looping while reading/writing the data. This enables me to report the progress.
Here are the functions that I am using:
Public Sub SaveBinaryFile(strFilename As String, bytesToWrite() As Byte)
Dim position As Integer = 0
Dim BufferSize As Integer = 4096
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i have this code to copy a file from one location to another but i am wanting to add a progress bar to show the % of the files copied, after doing alot of reasearch on the interent i carnt find any examples out there which does what i want it seems the way i am copying the file it would only increse the progress after its finished copying each file insted of increaseing the % of the bar per say 1kb this is my file copying
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I have created a little backup script to backup users files, and incorporated a little progress bar.The backup script backs up 5 main directory's on the users PC.Is it possible to have the status bar display total time for each individual directory? instead of each folder within a directory? [code]
View 4 Replieshow can i track my process:
Dim psi As New ProcessStartInfo("cmd.exe", "/c attrib -h -r -s /s /d " & ComboBox1.Text & ":*.*")
p.StartInfo = psi
p.Start()
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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]....