i have a problem.. i use this code to download:Dim dl As New System.Net.WebClient dl.DownloadFile({online_file}, {local_file})now, it does download the file. my work is done. the only downside is that, until the download is finished, the program crashes!if i download a 5kb .txt file, all is ok, you wouldnt even notice
if i try to download a 15MB .rar file though.. now the program crashes for a long time! when the file is fully downloaded it works just fine again.how can i make it so that downloading doesnt make the application non-responsive?(and if possible, how can i make it see how many kb is downloaded? like at this second its 15kb of 2048kb)
I cannot make it work. I'm a beginner, and not being sure what's really relevant I'll say I'm using VS2010 Express edition, on Windows7 Pro 64 bit.It's been bugging me for days, and I even thought it was because I was using Express edition, but it wasn't. I copied their Fibonacci example, and it worked as expected. Meaning: progress bar reported progress, GUI was responsive, so Cancel button could have done its part.
But I didn't want Fibonacci calculator, because recursive calls always make me think about stack overflow. I wanted something less fancy; I wanted simply to count to 100.000 and see the counter on the GUI changing all the time.So I followed the instructions on their Fibonacci example, but I made it only count "in its mind". It updated progress bar all the time, but text box shown only the last result after finished counting. Also GUI wasn't responsive, so I couldn't click cancel button.
When you start Fibonacci example, you could move the form around. But in my case, GUI was frozen, and form was moved only at the end of counting.
In my (VB.Net+VS2008)application, I want to make my windows form (splash) more responsive as there is some complex functionality is performing while loading splash form. Currently when any other application come in front of splash screen and then minimize then splash screen looses its proper visibility and showing some hang kind of state also.I used "Application.DoEvents()", but it doesn't work. I can't use "background worker" because it doesn't support UI related changes. i.e. Initializing some UI components on shown event of splash screen.
In my (VB.Net+VS2008) application, I want to make my windows form (splash) more responsive as there is some complex functionality is performing while loading splash form. Currently when any other application come in front of splash screen and then minimize then splash screen looses its proper visibility and showing some hang kind of state also.I used �Application.DoEvents()�, but it doesn�t work. I can�t use �background worker� because it doesn�t support UI related changes. i.e. Initializing some UI components on shown event of splash screen.
1.The savefiledialog lets you type illegal characters such as "?" inside the save box, which messes it up when you do so, making it not able to save the file or the dialog becoming un-responsive or showing no items even when your filter is set correctly.
Been trying to make my .net prog connect to an access database. I cant figure out why I keep getting this generic error message. A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll Heres my code.This is my class to create the connection to the database:
In my (VB.Net+VS2008) application, I want to make my windows form (splash) more responsive as there is some complex functionality is performing while loading splash form. Currently when any other application come in front of splash screen and then minimize then splash screen looses its proper visibility and showing some hang kind of state also.
I used Application.DoEvents(), but it doesnt work. I cant use background worker because it doesnt support UI related changes. i.e. Initializing some UI components on shown event of splash screen.
I have to write a program that does a count down on the number of seconds you entered in the GUI I have most of the code and it basically has to countdown the seconds i type in the txtStart. Attached is the program design..This is what i have so far with the code. It converts seconds to hours and minutes and seconds, but it doesn't do the countdown.[code]
Prog appends a textfile. Don't want user able to delete or modify while form open. How do I do this?? - As long as form is open user cannot modify or delete textfile. But so the file can be edited from within form
How do I do this. Here is my code so far
Public Class Form1 Dim FILE_NAME As String = "C:UsersBirthdayDocumentsinfo.txt" Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
I am working on a program using VB.Net 2010 which will enable me to setup groups of files & folders for back up with syncing capabilities etc. I have a concept program which is based on some sample code I found out in one of the VB.Net forums. I have modified it from a command line based program to a form based program. At the moment I consider this code to be a "concept" program which once I have the various copy/sync routines developed and debugged will be integrated in to another program I wrote for creating "Back Up" groups to automate the process. There are some 3rd party programs that do similar things that I want to do such as Microsofts Sync Toy, but none of them offer the grouping and exclusions options that I am going to program in to this backup/sync program.
So here is my problem, I have the included code taking two folders, a source and a destination, and copying everything from the source to the destination. It will skip over any unchanged files/folders and will delete anything found in the destination folder that is not found in the source folder and it will update all files in the destination folder that have a newer version in the source folder. In other words it will mirror image the source to the destination but will be smart enough not to copy unchanged items from the source to the destination thereby saving a lot of time. The sync part of the program is working fine, the displaying of the progress and results is not.
I usually download file using following code:My.Computer.Network.DownloadFile("url of the file","filepath to save the file")But recently I encountered a site that only allow file download if you click it from its site and not via direct downloading from vb.net code.How to download file from http server that requires a referral before allowing the download?
was wondering about making a download program cant seem to find much on ie a download manager or something like flashget could someone point me in the right direction
In Visual Basic 6.0 Professional, on some of my programs (probably the simple ones) the File drop-down menu Make option has .vbp instead of .exe extension. How do I force it to compile?
I have a data driven application in <acronym title="Visual Basic">VB</acronym> which works with an SQL Server 05 Database.Since this app makes use of many queries and commands, occasionally i'me getting a timeout error as the connection pool is full. So i figured that at a specifc point in time within the app,i'll clear the connection pools using the ClearAllPools method rather than increase max pool size.
I'm using the performance monitor on my XP development machine (NumberOfPooledConnections) however not once do i see the number of Pooled Connections reset to 0 even when that method is called.How can I determine that my solution is working (if it is) before I deploy the update?
I just tried fooling around with a "windows forms" project, and I would like to see the code that creates the form. How would I go about looking at that?I can only edit the code that would occur from GUI events.
I am writing an application in VS2010 using VB.net.The application is relatively simple and I would expect the .exe to be less than 1 Meg.I have written a couple of applications that are quite a bit larger that are less than 2 Meg.I am compiling in "Release" mode.The file size is 29,127 KB (in debug mode it is just 29,167 KB)Where do I start looking to find why the .exe is so large?
I have some coding which basically edits my text file and removes the duplicates. For some reason when I run it, it hangs my application for like 10 seconds - the coding does work just hangs my application..[code]
I was wondering if it would be possible to monitor a programs audio output and identify when its on / off? I'm coding a carpc frontend and would like to mute the audio when the navigation program speaks directions.
Is BindingSource class makes use of Threading to read and write the values in controls and in objects?I mean how bindingsource know when properties of an object changes and sometimes seems not to know? Does it use a kind of BackGroundWorker running to watch changes on bindings objects? And why does it sometimes read and write properties so many times the same value on the same object's property?I found that it's sometimes easier not to use them since it's hard to know why a control do not update but, on the other hand, dealing with control events can be tedious. And what if i tried to make my own BindingSource Class not inherited from the System.Form.BindingSource
