Pause While Downloadfileasync Finishes To Prevent Webclient Errors?
Jul 2, 2009
I have this proyect where Im trying to do a program that concentrates all the Weather related links,information, and images in a single place, to make easier the job for a friend teacher whos a meteorologist.
the program per se does a lot of "parsing" of htmls, eliminating the information not needed and also download automatically certain images ( Satellite specially.. ) most of these images are... sort of hidding inside the html ( thus the parsing.)[code]...
I am trying to make a download manager for my program. But when I run this code it gives me the message box say "Download Started" but that is it. I do not get any file downloaded or progress bar change? Does anyone know why?Public Class frmDownloader
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click WebClient1.DownloadFileAsync(New Uri("https://s3.amazonaws.com/MinecraftDownload/launcher/Minecraft_Server.exe"), "C:hi.exe") MsgBox("download started") End Sub
I'm trying to download multiple files based on what a user has selected on a formI have multiple checkboxes in place, so If a user would select Checkboxes 1,3,4 I would want the webclient to download files 1.txt, 3.txt, 4.txt.The WebClient method is causing a "WebClient does not support concurrent I/O operations." error.
If chk1.Checked Then WC.DownloadFileAsync(New Uri("http://www.google.com/1.txt), Path.Combine(DataSource & strDirectory, "1.txt"))
I have a desktop application from where i want to download files from the web server. when i am downloading a single file then there is no problem. but when i want to download more than one file there is an error like "WebClient does not support concurrent I/O operations".
I'm trying to download a simple text file from a web server. It's easily accessible from the web browser and I can download it from the web browser. However, whenever I use a WebClient to download the file, I get a 403 Access Forbidden Error! I'm not sure what I'm supposed to do. I haven't come across this kind of error in programming before and I'm not sure what I'm supposed to do to get around it.
I receive three errors using the following function:
Private Sub readWebpage(ByVal url As String) Try Dim req As System.Net.WebRequest = System.Net.WebRequest.Create(url) Dim resp As System.Net.WebResponse = req.GetResponse
[code]....
The remote server returned an error: (500) Internal Server Error. The server committed a protocol violation. Section=ResponseStatusLine
I've written a JavaScript function which validates form input and highlights the input fields and displays any error messages, which I have tested and all works fine. i have called this function from the OnClientClick attribute of an asp:Button tag. However, if the JavaScript function determines there to be validation errors, I want to stop the form from submitting. How do I do this?
I am using Synclock to prevent multiple threads from logging text messages to the same file at the same time, but this doesn't seem to work:I get frequent sharing errors on the logfile, within the synclock block.The Synclock is using the variable holding the filename, because it exists all the time and because it is always the same object, whatever class instance or thread I'm in.[code]Despite using Synclock and a Using block around the code, I keep getting this error in the sw.WriteLine(Msg) line:System.IO.IOException: The process cannot access the file '(filename)' because it is being used by another process.Should I use some other type of object than a string to synchronize on?I cannot use a user interface object (button or so) because it is a windows service project.It was written and compiled in Visual Studio 2008, but targeting the 2.0 framework because it has to be able to run on some old Win2000 machines.
1) Why the pause button and also the pause command does not exist in VB 2010 Express?
2) I have some solutions under 2010. In 2 or 3, while debugging, I can change instructions without restarting the application. In others, I cannot change anything (Is like readonly), Looking in 'My Applications', Tab 'Debug', Option 'Configuration' I can choose several Options. In the applications I can debug, the default is 'Active (Debug)'; in the others is 'Active (Release)'. If I change the options, the word 'Active' remains attached to the original option.
I'm getting the following error "Object reference not set to an instance of an object." from line (24):filedownloader.DownloadFileAsync(remotePath, localPath)in the following code.
vb Dim id As Integer = lbBackdrops.SelectedIndex Dim localPath As String = "tempBackdrops" & allBIDs(id) & "" & allBFNs(id)
I have an app that I'm debugging and I need to pause it by clicking on a "pause" button in the development environment. I don't want to stop it programmatically, just manually to check what it is doing. I know this should be simple but I can't find a pause button anywhere on the toolbar.
I have a chunk of code that downloads a file using DownloadFileAsync. If I disconnect the internet the button clicks and nothing happens. I want to throw an exception if the internet is down and also if the download fails. [code]
I'm trying to download a file, which works fine, but the progress-bar is showing me no progress and because of that the form doesn't close. Could anyone tell me what is/could be wrong with my code. The weird thing is that the same code is working in my another app. [Code]
im working on a little project what executes a bat file on a button click using this command:Interaction.Shell("read.bat", AppWinStyle.NormalFocus, True, -1)however when this is executed the program will become unresponsive while it is running... this may be simple but is there a way i can make my program be responsive and for it to execute in the background?
How can I stop users from clicking into a webbrowser until the webpage has completely finished loading ?Until the webbrowser DocumentCompleted event has completed users should be able to see the page but not click into the control.
I am trying to make a start and pause button (and hence continue) to start, pause, and continue my program. The start button works but the pause button does not. Can someone look at my code and see what the pause button needs to do to pause the program? I am using VB 2005. Here is my code.
In an event handler of a tab chaged of a tabcontrol, I call a method asynchrounously, like this:
Private Sub tabDetails_Deselecting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TabControlCancelEventArgs) Handles tabDetails.Deselecting ' we pass pageindex so that we set the index back in case the validation fails
I have a program which has 2 forms. I execute form1 first because it reads files and then writes to a file. Then I execute second form (form2) that will read the file created by form1.
How could I make form1 start form2 once it finishes reading file and writing to a file?
The following loop starts in x then loops thru y 20 times then goes back and finishes x. how do I get it to loop thru x then complete loop y then loop x once more then loop y completely again 20 times then back to x and another 20 ys. there should be 200 loops today.
CODE:
I need to figure this out as part of a larger program.
Private Sub wb_DocumentCompleted(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles wb.DocumentCompleted
But I need to navigate to another page after Logging in to the website How can I wait the first page to be loaded fully then navigate to another page?
I have a .net application that uses customerrors web.config module to display meaningful messages for errors. It works without any issues for 500 errors/exceptions caused by non-ajax and ajax components (updatepanel). However, in a scenario where updatepanel's asynchronous request times out, there is no error raised at all. I was able to see the timeout in firebug and come up with a solution that would at least display the error message as an alert and then redirect the user to the 500 error page using javascript but it's not quite doing what the rest of the application does in case of an unhandled errors like these. I basically just want everything to go through "LogEvent" mechanism so based on the severity of the error, it does the necessary work.This 500 error page doesn't have anything in the Server.GetLastError() for these timeout scenarios. Is this an expected behaviour? Can it be changed so I do have access to these timeouts in Server.GetLastError() OR maybe just run this error through "LogEvent" mechanism? Is there a better/more graceful way to handle this issue?
Below is my code to give you an idea, not exactly what I have in my application but pretty close.
In an application I have, when a user types in a textbox, the data in a listview is refreshed to reflect what the user is typing.As it stands, it does a refresh after each key is entered.Is there any way to smartly wait until the user has finished typing before initiating a data refresh?
I am working on an excel add-in. Currently I have a couple of forms that grabs info from excel, processes and pastes data back into excel.My problem occurs after my form closes (this leaves excel and one other MDI form still open). I need my excel sheet to come to the front for users to view and edit. My MDI form just stays on top even though I just edited the excel doc. I have tried everything I can think of using:
So when i build or click debug on my program. No errors come up and its smooth. So i decide to publish my programme. However. I come up with a bunch of errors during the publishing.
Here they are:Error 1 Cannot publish because a project failed to build. 1 1 Simple CALC
Error 2 Unable to copy file "binReleaseSimple CALC.exe.manifest" to "binReleaseapp.publishApplication FilesSimple CALC_1_0_0_0Simple CALC.exe.manifest". The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
I have a program that starts another program after setting the regkeys basically the program continually syncs the calandar of outlook and another application.I set the regkeys than launch the c:sync.exe app. I have tried a simple process.start and launching the process as a thread and they both do the same thing: The other process starts and works as it should but my main program goes "White screen" or "not responding" until the process.start has exited.
I want the process.start to run in the background so if users click in my main app it responds and truly that they can access the context menu of my main app from the taskbar while the process.start is running.
I am creating a mp3 player through VB.Net I have kept a Listbox that shows the play list. I have created the player such that it when ever the user cicks on the selection on listbox the player play the corresponding song. so the user has to click on the next song to play the next song once the previous song is finished.Now I would like to know is it possible for the player to automatically play the next song once the previous song is finished? If so how do I go about doing this on VB.Net?
