Downloading Files With BackgroundWorker And Progressbar?
Nov 11, 2011I just have 1 listbox which got link in there. How can I download each file using background_worker + progressbar(current file download)?
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BackgroundWorker To Update Progressbar And Label While Downloading Large File
Mar 10, 2012I place some code below to simplify the process.
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
[code]....
Make A Downloading File App With A Progressbar In It?
Aug 7, 2009How can i make a downloading file app with a progressbar in it.
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Marquee ProgressBar With BackGroundWorker/
Nov 26, 2009I'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.
View 6 RepliesVS 2008 BackgroundWorker And Progressbar?
Aug 31, 2009I 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..
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Fill Datagridview Using Backgroundworker & Progressbar?
Aug 23, 2010how 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.
View 7 RepliesVS 2008 ProgressBar Integration To BackGroundworker
Feb 22, 2011I 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:
[Code]....
VS 2010 Backgroundworker + Progressbar + Upload To FTP?
Sep 24, 2009I have the download progress bar working in my program but I can't find any working code to determine the amount uploaded. here is my upload code
[code]...
Backgroundworker ReportProgress Firing But ProgressBar Isn't Changing?
Aug 15, 2011I have a progressbar on my form that is not getting updated.
When the Send Email button is clicked I do this:
Public Sub SendMail()
If CheckSettings() = False Then Exit Sub
BackUpEbillFile()
LockForm(True)
StatusBars(1, "Sending emails...")
[Code]...
Error With Progressbar Show / Hiding From Backgroundworker
Aug 8, 2009[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.
View 5 RepliesMarquee Style ProgressBar Not Displaying With BackgroundWorker?
Sep 14, 2010I'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.
[Code]...
VS 2010 Backgroundworker And Kleinmas's Download With Progressbar?
Oct 14, 2009I 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..
Forms :: Load Datagridview Via Backgroundworker With Progressbar Feedback
Apr 7, 2008how to safely load a datagridview via a backgroundworker while showing progressbar feedback ? My data is coming from an access mdb.
View 4 RepliesAsp.net - Downloading Exe Files From Database?
May 15, 2012I have some exe files that I've uploaded into my database as I don't want them to be publicly accessible. I tried using a link button and a generic handler to serve the file using the following code:
Context.Response.Clear()
Context.Response.ContentType = "application/exe"
Context.Response.AppendHeader("Content-Disposition", "filename=program.exe")
Context.Response.BinaryWrite(binaryfile)
The problem: Google Chrome does not treat the download as any other exe, instead after downloading it reports "program.exe is not commonly downloaded and could be dangerous." with a "discard" button and the option to "keep" the download is hidden under a context menu.
serve exe files stored in the database?
Downloading And Placing Files?
Jun 6, 2011Im currently working on a program that will download some files and place them inside a folder. The tricky part is that the folder they have to be puttet into is a .jar file. The jar file is always the same place, and that is in %appdata% the full location would be "C:UsersBrugerAppDataRoaming.minecraftinminecraft.jar". With "minecraft.jar" beeing the destination for the files
Ps. Im trying to create a mod installer, since some people are having a little trouble installing mods for minecraft. Minecraft can be found at [URL]
Downloading Files From Asp.net Page?
Mar 9, 2009I have been trying to download the file from a virtual directory ( which is pointing to some other location) within the web-folder. I have implemented 2/3 ways on doing that, but none of the ways download the file. The asp .net page is not even showing the error, its showing a blank screen. One of the pice of code I implemented is:
<code>
filename = LinkButton2.Text
filepath2 = Server.MapPath("/folders/") & uname & "/" & filename
HttpContext.Current.Response.ContentType = "application/octet-stream"
[code].....
Downloading Files Online ?
Jun 23, 2010All im trying to do is make a program that downloads all the files i want offline and but them in a folder, but when i go to the folder and look at the downloads they are all empty,
Here is my code.
Code:
Downloading Files With Same Suffix
Nov 16, 2011I have about 170 files on the server with the sameending Eix and EPK in the "pack".It would have to withdraw all my files to a predetermined folder "pack".
View 4 RepliesDownloading Many Files From A Web Server
Jul 30, 2009I am using the web client to download a file. Which works ok. However, now I have to download many and the number of files to download will change everyday. I am not sure how I can get the web client to know which files have been downloaded or not? I was thinking of using a for loop to download each file. But I will never know how many there are to download? The web client could download the same file twice?
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Downloading Multiple Files Specified In TXT Doc?
Aug 18, 2010I've come up with a way of downloading multiple files specified in a txt doc held on a web server. The problem is it only downloads files not folders, im using the following from the codebank to download the files currently:
Try
mCurrentFile = GetFileName(URL)
Dim WC As New WebClient
WC.DownloadFile(URL, Location)
RaiseEvent FileDownloadComplete()
Return True
Catch ex As Exception
RaiseEvent FileDownloadFailed(ex)
[Code] .....
Can I modify this to allow downloading of folders too or will I have to use a completely different method?
Downloading Multiple Files?
Jan 10, 2011I'm trying to code a program that can download multiple files at once (on different threads of course). I have created a custom listview component that will allow me to add a progressbar directly to it. What my real question is, how can i take a url given by the user from an input box and create a new webclient to handle the downloadasynchronously
View 2 RepliesDownloading Zip Files From Internet With VB?
Dec 28, 2011[URL]..it just comes up with an error. am i doing it right? and is there any way i can just download it to the same folder that my program is in no matter what computer its on?
View 13 RepliesVS 2008 Downloading Files
Apr 28, 2011im trying to write an updater for my program and im checking the version by downloading a .txt file. however its coming out blank. this is the first time ive done something like this so i probably noobed something bad.[code...]
View 12 RepliesApplication For Multi-downloading Certain Files?
Apr 9, 2009Basically I want to create a little program with 5 or so text fields where I enter the specific names of movies. Upon pressing a "go" button it then does a google search(with certain criteria) for all textfield entries on the website [URL} and then download the files, if possible without opening a browser.
Search criteria:
-only video formats(.avi .mov etc)
-download url contains the "_de" tag (to insure german trailers)
That way it should hopefully find the right trailer and download it. If possible have it use progress bars.
How much work do you think this is? Or is it even possible? From a logical standpoint I don't think it's too much work... I am using Microsoft Visual Studio 2008 Express Edition. My project currently is just full of test code but I will post it anyway:
Code:
Public Class Mainwindow
Private Sub Mainwindow_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
Downloading All Files In A Directory ( HTTP And FTP )?
Mar 4, 2010I would like to know how to do the following :
View 2 RepliesDownloading Files Form A Webpage?
Oct 31, 2010Here is this code of the webpage:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
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Downloading Files From Listbox Links?
Jul 26, 2010I have a listbox full of links, and I want to download them. The listbox items' text contains a link to a webpage in each one. Now I want to download each page's code to a file site1.html for example. Also for each file I need to add a number site1, site2, site3 ... How do I do that ?
View 1 RepliesFree Up UI While Downloading A List Of Files
Dec 22, 2010I want to download a list of files and report whether or not each file exists or contains certain qualifiers. The files are text/web documents, with maximum sizes of about 200 KB.
I am using a For loop to iterate through the links, which are placed in an array. The problem is that while my loop is going on, all of my forms become frozen and any status updates I want to show in my forms essentially do not show up because the UI is stuck.
Is there a better way to free up the UI than using DoEvents()? I recall from a previous post that the way my function is being called, it's being called from the UI thread,. Therefore I should just start a new thread so my UI thread doesn't get hung up downloading all the files? Or should I use a timer and download each file at a specific interval so that there's some downtime in between files that allows for me to change the status to tell the user that my program isn't stuck?
Edit and side question: I just realized something really...bad. Basically in my program I play around with DOM for a WebBrowser in my main form. I'm working with a lot of the elements in the document, but they don't always exist because each page takes time to load based on a user's internet connection speed. I WOULD HAVE used a While loop to check if certain elements exist or not, but in the past when I used VB6 I noticed that this causes massive program hangs...so I used a timer instead. But those hangs were the exact same type of hang I seem to be having with this downloading files business.
Now, I just moved from VB6 to .NETa few days ago. But I just read that the reason I used timers in VB6 was because VB6 didn't support multi-threading. So...for all of those instances where I should be using a While loop instead of a Timer, should I just place that While loop code in a new thread so the UI doesn't freeze up?
If so, I am greatly relieved and I can make my code 10 times less ugly. But I will also rip parts of my hair out because it took me like a 100 hours of debugging to get my really crappy timer code working.
This is my code so far:
Code:
Private Function analyzeURLs() As Integer
Dim k As Integer
'did we make it through without any errors?
[Code].....
Secure Password When Downloading Files From FTP
Feb 15, 2010I will be downloading updates for my database and client from a separate executable that will only be used for updating.In order to prevent someone from just decompiling my app through reflector and obtaining the password to the FTP server, what would be the best way to store the FTP password?
I was thinking I could create a table in my SQL database and store it there since a SQL database is way more secure than my app.
VS 2010 - Downloading Files Selectively
Aug 19, 2010I was wondering if there was anyway to 'scan' page sources of websites and download only certain files based on their extensions, as you would by going to view -> page source in a web browser? Then, saving, perhaps, a .pdf, or a .swf file? I really don't know where to start.
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