Program Runs Slowly After About An Hour And A Half Or So
Jun 29, 2011
I created a program that has 11 threads running simultaneously.Each thread runs a stopwatch and measures the amount of time that passes between the Start and Stop.There is no code between the start and stop, so most often, the result is 0 milliseconds.I noticed that INITIALLY, after a few minutes, the program would slow and the output to the RichTextBox would become disjointed.So, every two minutes, I have a timer execute and end the threads and restart them all.This seemed to help, however, after about an hour and a half, the program becomes more sluggish, evident in the stopwatches recording more instances over 0 milliseconds.Does this have to do with 'garbage collection' and is that even possible in VB .NET (I thought C only had that), or perhaps memory management?
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May 6, 2009
I wrote a VB.NET Windows Service, which works fine. I have only one issue with it. I want the service to execute on the half hour and top of the hour marks (e.g. 9:00, 9:30, 10:00, 10:30, 11:00, etc etc etc). I am using the following code:
Protected Overrides Sub OnStart(ByVal args() As String)
' Add code here to start your service. This method should set things
' in motion so your service can do its work.
[CODE]...
This code works, however, if the service starts at, say, 10:15, then it executes at 10:15, 10:45, 11:15, 11:45. How do I make it so it always executes on the 30 minute and top of the hour marks?
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Dec 6, 2010
I need to fill a combobox with times at half an hour intervals:
12:00 am
12:30 am
1:00 am
1:30 am
all the way to 11:30 pm.
I could do it all manually, for next loop, cur hour, cur min, add 30 min, when over 60 add hour and so on....
but there has to be an easy way to do this?
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May 22, 2010
Why is it that any project I make in VB.NET runs very slowly? Even if I simply add a TabControl, switching between tabs runs slowly, flashes the control white, etc. Is there a way to make it run smoother?
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Nov 8, 2011
What my program does is load a file (password list), then progressively reads each line of text in the file whilst writing each line to a new file. After X amount of lines have been written, it should start writing the lines of text to a new document until the initial password list has been split into X amount of password lists. The problem I have is that after hours of tweaking, all I can get it to do is write either blank ocuments, or write all of the lines to only one file. I really need it to be able to split into multiple files, preferably at runtime rather than loading a whole text document into the program in a textbox or array then writing it to new files.Below is the source:
Imports System
Imports System.Windows.Forms
Imports System.IO
[code].....
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May 23, 2012
I have 2 Richtextboxws on the form. I need for each textbox to take up half the form width and full height. also, I need those textboxes to keep the above mentioned proportions even when then the form size is changed on the screen.
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Jun 12, 2012
So let's say I have 1400, I want to convert it into 2:00PM I tried the following:Dim convertedTime As String = DateTime.ParseExact(theTime,"HHmm", Nothing)
And it would give me this: 6/12/2012 02:00:00 PM
I do not want the date part, neither do I need the seconds. All I need is 2:00PM
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Oct 13, 2010
Im trying to create a program that takes an amount entered by the user and then convert it into Half Dollars, quarters, dimes, nickles, and pennies when the calculate button is clicked. Each coin has its own function and is shown in separate text boxes... right now i cant get it to work correctly. When i try to get half dollars to work it rounds up and then the rest of the coins say 0. How should i do this?
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Feb 28, 2010
how to copy the left half of an image, in my case its the let half of a .jpg of a whale, and "paste" it over the right half of the image. Any help would be great, here is some code that might have something to do with it, i would prefer that i could get an answer that accomplishes this by modifying this code but if not that's cool. picture should go from looking like [] to [[
Dim mb, rb As Bitmap
Dim x, y As Integer
Dim r, g, b As Integer
[code]....
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Jun 9, 2010
I got a problem here. How can I let the program run in background when I click the minimize button on the right up corner?While it is running in background, I also wish there will be a small icon shown in the system tray.
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Apr 21, 2010
1. When the program is running and if i save the data , it gets saved in the db. But when i close the program and again run it the data gets discarded
2. Say first i have saved the info about person 'A', and then When i Save then info of Person 'B', instead of the the details of B the details of A is getting duplicated[code]...
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Apr 18, 2010
For some reason, I can only run my program at college where I created it. It runs off of E:/ (usb port) so when I take it home, it won't run as at home, my E:/ is a CD Drive. How can I change my program so that it runs off of all drives?
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Nov 10, 2011
I loaded a Lightswitch program on an XP machine and after load all of the updates it runs fine. I tried to load it on another XP machine with all of the updates loaded and it looks like it installs and it shows up under programs but it looks like it starts to run but then nothing happens, there are no new processes running.
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Apr 8, 2011
I have made a program that has an intro screen, moving onto an activity select screen which acts as the main interface to get around the program. After creating the program and installing it on my computer, when I close the program from the activity select screen, using the "X" at the top right corner, the program continues to run under "processes" in the task manager.If I close the program from the intro screen though, it will close everything, including the processes. Is there anyway I can get the same to happen with the game select screen? I can make it work by putting my own "End" button on the form, but id prefer to be able to do it with forms own close button.
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Jun 28, 2010
this is really bothering me, my program seems to run faster whenever I click on some other window so the form doesn't have focus. What is going on and how can I fix this?
Here's the troublesome section:
ListView1.Items.Clear()
'loop through the updates
[code].....
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Sep 10, 2010
I created a program in MS Visual Web Developer 2010. It has a form that simply launches a script that manipulates a database. The project lives in several files and they are all inherited so they see each other and it accesses a MSSQL Express DB on one of our servers.
When I F5-Run the project locally on my PC it works fabulously. When I copy it to a web-enabled (application) folder on the server it executes but almost my very first line of code fails with this error[code]...
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Jul 17, 2009
I'm trying to run a program that runs fine on XP OS, but it won't run on Vista. I've tried to install msinet.ocx in the system32 folder, but it never works.I've tried to register with regsvr32 but it gives error I've tried to register with regsvr32 with cmd as administrator it's register the Activex Control but it gives error " Unexpected error "
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Jul 22, 2010
I would like to know if there is a way to see how long a program runs. I have one that takes a very long time to run, which is not the problem. I start it and go to bed or leave for the day. When I come back it has finished. I do know it takes hours. Is there a way to find out how long it does take to run give or take a couple of minutes?
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May 23, 2011
I want the cursor to change when moving over pictures. Can it be done prorammatically? The solutions offered in the forum do not function. Changing the cursor in the property window of a picture is refused.
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Apr 29, 2011
I've been looking for a way to create a launch sequence that runs the program while simultaneously minimizing the IDE to the tray.I've been unable to find even a discussion on such.
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Jul 15, 2010
I made a project that open pdf files in the debug folder. But when i am trying to publish it program runs but can not open pdf because the published folder doesn't contains the pdf files. How can i publish my project with all the pdf and swf files?
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Oct 10, 2011
I am looking to write a program that runs in the background that monitors the USB ports on a PC. If a specific device gets unplugged I want a message box to come up saying so. Is this possible. I am guessing I would need to query the usb devices for their ID and then write a simple If then statement, however I do not know how to get the IDs of the usb devices.
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Mar 21, 2012
I've created my program, its all fine and dandy, only problem is i want it to start when windows does.i have read a few threads and adapted some codes.. i have this [code] now it wont let me debug, presumably because of admin rights. although when i navigate to myprogram's .exe and run as admin it runs the program and seems to skip the the whole reg key section .
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Mar 16, 2011
Iam looking for a way to save a checkbox' state between runs. So that if a checkbox is checked and the program is the closed down, it will remain checked when the program starts up again and vice versa. I've found som deferent guides around the web but i cant seem to get it to work..
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Dim ExtApp As Integer
[code].....
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Aug 9, 2009
I wrote a simple auto login script to update my IP address on a certain website. Something really strange is happening now though. The first time I run the program, nothing happens. However, the second time I run the program, that instance will work fine. Then I look in task manager, and the first program is still running, using a whopping 50% of my CPU. I believe VB may be blocking off memory or something, as when two instances are running each is using around 25% of CPU. Then after the second one successfully completes, the first starts to use 50% again.
Here's my code below:
Option Strict Off
Public Class frmTest
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
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Nov 9, 2009
I am creating a very simple game for a project. There is opportunity for bonus marks, and one thing I would like to do is be able to "save" the game. The only thing I need to do is save about 4 variables to be recalled the next time the program runs.
What is the best way to do this?
I have searched Google, and there are ways to link the program to an Access database, but that seams a little extreme. I tried seeing if you can make an XML file to hold them, but I can't really find any good information.
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Jul 7, 2010
I have a complex form to allow the user to configure my app.
What's the best way to save the form state & reload when the program next runs.
I mean text he has entered in list boxes, the selected item of combo/list/radio, whether a checkbox is cheeked, etc
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May 11, 2009
[code] The problem in my case, this is not working with this code. All I need are random numbers outside the above boundaries.Please note when I remove 'Not' in 'Loop While' statement, the programme runs indefinitely!!
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Dec 27, 2011
I'm having an issue with the startup of my build app with vb2010.Let me explain what the situation is at the moment.
I have a form and a splashscreen. I use the application events (startup event) to check if there is a network connection, if so the splashscreen will run and it will check if the database is available, if this is the case, it will copy the online database to the local ms access database.If the startup check of the network is false, it the user gets a message that there isn't any network available and the program will try to run normal, then when the user clicks the ok button of that message, it will check if the local database has any records. If so the splashscreen will run and the program starts normal (without copy the database, because there isn't any network available).The issue that I am having is, that when there isn't a network connection and the local database is empty, (I do get the message that the local database is empty), but the program still runs, while it should exit.Here is the code of the application event:
Protected Overrides Function OnInitialize(commandLineArgs As System.Collections.ObjectModel.ReadOnlyCollection(Of String)) As Boolean
Me.MinimumSplashScreenDisplayTime = 5000[code]......
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Jun 3, 2011
And here I am with a new problem in my program When I debug it everything works fine (the buttons, progressbars, pinger, spambot, When I compile it and run the Executable file, it works too.When I run the Executable file on another computer (tried on 4 different ones) the program stops working and
I get this error:
{$ exception. "Failed to create the form For more information, see Exception.InnerException error: File or assembly ." Microsoft.VisualBasic.PowerPacks, Version = 9.0.0.0, Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a "or one of its dependencies not found. The system can not find the file specified .."} System.Exception {System.InvalidOperationException}
[Code]...
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