I have been making a downloader in vb.net everything is working fine Appart from the downloading, it takes around 10 seconds for the download to start Is this normal or am I doing something wrong?The download is being done in a thread and before when I have tried to download outside of a thread the program dosnt respond for those 10 seconds
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I want to create a daemon thread that sleeps for 30 seconds and looks in a directory for a database then opens the database.
View 4 RepliesI'm using VB.net to have a GUI on top of a commandline program.
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Which works and prints out all output from the commandline program. However at some point the commandline program ask for user interaction, eg: Type a number (1/2/3/4):But the commandline program stops after this. I suspect this is because it doesn't receive a valid option.Is there a way to capture when the commandline program wants user interaction and hold the reading of the stream to be able to enable the user to input something?
im trying to let my program respond to some audio commands i have downloaded the sdk an added references
and my program detects voice but doesnt respond to the command
Imports SpeechLib
Imports System.Speech
Imports System.Environment
Imports System.Speech.Recognition
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I want to have My.Settings.Delay in seconds not milliseconds adding the 000 for the user. I tried My.Settings.Delay + 0 + 0 + 0. but can't sort how to do this.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim var As Integer
Dim startVal As Integer
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When you press the send program freezes and you can't do any thing how i can add button puss resume and stop
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when i click the dgv row for the first time the CurrentGridIndex get the rows index but the second time i change the combbox item without clicking any more rows because it should be selected already i find that the CurrentGridIndex is set to 0any explaination why that happen and how to fix it am i select the rows in wrong code?
Private CurrentGridIndex As Integer
Private Sub ComboBox3_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox3.SelectedIndexChanged
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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
View 6 RepliesI am making a program that NEEDS to be password protected, so i made a textbox with a code so that when the user enters the right password it lets you in. But if the user/person enters a wrong password 2X it will kick you out. So is there a way to keep the
View 3 RepliesI'm trying to use the thread pool to download more than one string at a time. But most of the tutorial on threading is in C# or C++ so my knowledge on thread pool is limited.
Here's what I got so far.
Imports System.Threading
Imports System.Net
Imports System.Text.RegularExpressions
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I keep getting an error "Cross-thread operation not valid: Control 'Listbox1' accessed from a thread other than the thread it was created on." And it still seems to be downloading it one by one to me.
I hve threaded ftp download, and that thread reports it's progressto another form (to progress bar). Now, when thread downloads, progress of thread is much slower than actual download is, so for instance: all files get downloaded, but the progressbar is at 50% or even less. Is there a way to track the progress of actual FTP download.
View 7 RepliesWhat Code Can I Use To Have The Program Refresh Every 10 Seconds?
View 1 RepliesWhen I close my compiled application, it will always hang for a few seconds before closing. It isn't something to do with my PC, I've got a quad core with 4GB of RAM -[code]...
View 4 Repliesok i have a program that check a website every 30 seconds. when it has completed going to the site it takes the sites body text and puts it into a richtextbox. how can i make it so that every time it adds a new line to the textbox it performs an action.
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim result As Integer
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hit the space bar every * seconds. When you hold down a key it will spam 3 times every 2 seconds. Or whenever you press space (meaning the key). I need the exact codes. I've tried Sendkeys.send {"Space"} Etc.
I've been trying for a while. I cant seem to figure it out. Please simple codes if possible.
I am trying to make a simple program to convert time given in seconds to hh:mm:ss format. But for some particular input values it produces incorrect time format. This is what I have tried :
Public Class Form1
Dim Hours, Minutes, Seconds As Integer
Private Sub btnReset_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnReset.Click[code]....
Works When the Input Value is 30:
Does not Work When the Input Value is 31:
What have I done wrong ? How can I fix this problem ?
I am making a program to test whether or not a host is online, assuming that host has blocked methods such as ping and netstat -t etc....
So I decided to try and connect to it, but the thing is every limitation I have set doesn't work. The program locks up for a few seconds (which I don't want in the first place) and I cannot terminate the client after say, 100ms of trying to connect.
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I have tried client.ReceiveTimeout but that didn't speed up the process, still takes the same amount of time for the program to respond.How should I go about testing if the server is up now? Or is there a way where the program wont lock for a few seconds as it does with the TCP method.
I want to convert seconds such as 254565443 seconds to hours, minutes, and seconds and thought if I could remove the decimal and the numbers behind it and not change the number in front of the decimal then it would work.
dim seconds = 254565443
dim Hour
dim minute
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What I need is a program that can click every 8 seconds. Heres the catch, It needs to click a location of a webbrowser but not interfere with the users mouse.....
View 2 RepliesI would like to stop the program for about 5 seconds to give the illusion that the computer is thinking. I tried a timer but could not seem to do it.
View 17 RepliesI 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]
View 2 RepliesI am very very new to VB.NET and would like to ask a simple question. I want to create a vb.net program and allow visitors to a website to download this program. However, I prefer not to have visitors download a zip folder. I would like to have a program that just gives a prompt to save in a selected folder, once the saved file is selected it prompts the person to download, and then when finished prompts the person to run the program. The reason is twofold:
1. I don't like the extra step involved with unzipping the file. and 2. I don't like the visitors having to look for the "main" file program within the new downloaded folder. So is there any way to have just one file for others to download without having it in a zip folder?
This is my function to goto a specific time in a movie or music, ... check it out..
'GOTO TIME IN MOVIE, or SONG.
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
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In one application, I need use 4 simultaneous threads.When the threads finished, I need to update the text of a TextBox.So, I create 4 Textbox, and I wanna the threads change the text to FINISHED.Each thread change one distinct TB.I use this "example"
Dim Terminados As Integer = 0
Private Sub frmEnviarMensagem_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Enabled = True
Timer1.Start()
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The problem is, I have an error in the red lines.The error is: INVALIDOPERATIONEXCEPTION "Cross-Thread operation not valid: Control tbPlaca1 Accessed from a thread other than the thread it was created on."I don't use cross threading. Each TB only was accessed for the correspondent thread, and for the "main program".
This is the error message I am getting:
"Cross-thread operation not valid: Control 'Panel1' accessed from a thread other than the thread it was created on." The reason I am getting this error is because I am opening up a new form and then calling these three things:
Panel1.Show()
Label1.Show()
Label2.Show()
why I get this error message because it doesn't occur normally if I open Form2 after closing Form1, it only occurs when I open Form2 after closing Form4.
I have done a program using vb2005 to display reading from my microcontroller bs2 board but have encountered some problems. My code are as follows.
Dim Stop_Rx As Boolean
Private Sub btnRead_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRead.Click
SerialPort1.Open()
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I've encounter an error which is, (Cross-thread operation not valid: Control 'txt1' accessed from a thread other than the thread it was created on.)
When my client try to connect to server I'm getting this error : Cross-thread operation not valid: Control 'l_users' accessed from a thread other than the thread it was created on.
Private Sub _socketManager_onConnectionAccept(ByVal SocketID As String) Handles _socketManager.onConnectionAccept
l_Users.Items.Add(SocketID)
End Sub
Would anyone be able to help me here please. I'm fairly new to VB.net and threading so im just trying to figure out what is happening.When I debug this I am getting the error thread operation not valid: Control 'ProgressBar1' accessed from a thread other than the thread it was created on.
I'm a little lost as to why the error is occuring or how to fix it. I've had to put the progress bar in a separate thread otherwise the GUI crashes
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My understanding is that thread.join will suspend the execution of code on the calling thread until the spawned thread finishes or is aborted...
With that in mind, I tried this:
For i = 1 to 50
threads = New Thread(AddressOf test)
threads.IsBackground = True
threads.SetApartmentState(ApartmentState.STA)
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However, the rest of the code runs when the loop finishes, not waiting for all the spawned threads to finish. Since the rest of the code needs the threads to finish (otherwise the rest will error).
I have written an application that loads a form - frmCad as well as AutoCad. It does this via a class which detects when AutoCad quits.
Friend Class CadApp Private WithEvents AppObject As AcadApplication... Private Sub AppObject_BeginQuit(ByRef Cancel As Boolean) Handles AppObject.BeginQuit RaiseEvent Quit() End SubEnd Class
My main class loads frmCad as well as CadApp.
Public Class Cad Private WithEvents frmCad As CadForm Private WithEvents app As CadApp... Public Sub ShowForm() If frmCad Is Nothing Then frmCad = New CadForm frmCad.Visible = True End Sub... Private Sub app_Quit() Handles app.Quit frmCad.Dispose() frmCad = Nothing .... End Sub
When I debug the program, it stops at frmCad.Dispose()The program continues to execute, but all the code after it fails to work.Looking more carefully I get an error message which contains:-Cross-thread operation not valid: Control 'Autocad' accessed from a thread other than the thread it was created on.