Program Gets Slow Down Over Time
Nov 5, 2010
I have a program that after clicking start, starts looping. Most of the code is in the "start" button event, and the timer keeps calling it every second. Basically the program reads a line from the serial port, opens and reads a couple text files, opens and writes a couple text files, sends a string out the serial port, then repeats.
After about 24 hours of running, the computer and this program get very slow. Screen updates get really slow and clicking on buttons takes the program several seconds to respond. The actual loop itself slows too, I think, but not much. Restart the program and everything is happy again. What would be the best way to go about troubleshooting this? [Code]
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Jan 22, 2012
I'm using Visual Studio 2010 Pro on a Windows 7 PC, to build simple VB Windows Form Applications (I've just started learning VB). Lately when I try to debug my applications, it takes unusually long. For example, an application with just a blank form and nothing else will take about a minute to build, and then it will sit for another minute or two until the app window pops up. It didn't use to do this!
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Feb 5, 2012
Does anybody know why hitting web services the first time takes much longer? I am not sure if this is per user, or per the whole application, meaning that if one user is hitting a web service, will another user hitting the web site also have to wait a while? I am not sure what is happening to rev up the web service.
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Jul 1, 2010
I am using VB.Net with Access DB. Main form is a Parent MDI. Each form when open first time is slow. It takes noticible time. But, from second time it becomes very fast.
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Aug 23, 2010
I have an application that consists of about 4 screens. Screens can be changed by clicking on buttons or via menu item. I use about 16 to 17 tables in all for all 4 screens. I've publised the application and it works fine except that it takes about 1 1/2 to 2 minutes to launch the application using the setup file that I save onto my PC. If I get lucky, a little over a minute is already fast for me. What can I do to help speed up the launch time?
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Aug 12, 2009
We have a project for a client that is written in VB.NET. In one of the projects, we have about 100 modules, which are all VERY simple. They're extension methods that convert between object types. Here is a small snippet:
Public Module ScheduleExtensions
<System.Runtime.CompilerServices.Extension()> _
Public Function ToServicesData(ByVal source As Schedule) As ScheduleServicesData
[code].....
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Jul 18, 2010
I was board making web browsers and OS so, I tried making an Encryption/Decryption program. I surfed the net and found a source code. But, after doing everything, I debug it, click the encrypt btn and nothing happens. I though the encrypting is a slow process. The thing is the process should be immediate cause I downloaded this web browser called 'Areo Pack'. It comes with a few other program and one of them in an Encryption/Decryption program. I tried it and it was done in a few seconds. I tried opening the encrypted file with notepad and I see a text file with Chinese, Japaneses, Korean, etc.
Imports System.Security.Cryptography
Imports System.Text
Public Class Form1
Private Shared DES As New TripleDESCryptoServiceProvider
Private Shared MD5 As New MD5CryptoServiceProvider
[Code] .....
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Jan 15, 2010
Why does my program slow down when i add a Back Ground Image?
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Feb 4, 2010
I think it's because I have a background image. For example when I maximize the program it lags. I mean big software companies have programs that have more pixel images and are much more colorful then my program is but never lag why. AVG has nice look but the program never lag. But the code runs fine so that is a good thing. How can I stop the lag with background image?
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Jun 5, 2012
I am trying to create a program in Visual Basic which will measure the performance of the CPU with every core, one at a time. In this program, I decided to place a couple of text boxes that display the processor speed and the actual processor speed. I need to get the actual processor speed to update and I have tried doing this already using a timer set to tick every second. However, when I load the program it runs really slowly and prevents me form doing anything within the program, including trying to close it down, and all it does is updates the text box every second. I have looked in task manager to find out how much CPU the program is using and it shows that my program is using 0 - 3% CPU.
Here is the code currently use
Private Sub Timer3_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer3.Tick
Dim mSearcher As New ManagementObjectSearcher("SELECT * FROM Win32_Processor")
[Code]....
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Oct 21, 2010
I am working on developing a simple console game in Visual Basic in which the "level" is drawn out after being read from a file.
[Code]...
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Feb 23, 2010
With a Time value in my program. Basically, I am importing a travel Time from a database e.g. 3:45 so it takes 3 hrs and 45 minutes to get from a to b. I then want to double this - 3:45 * 2 = 7:30, and then want to multiply it by a cost e.g. travel is charged at 25 per hour. so it would be total travel time = 7:30. Travel cost = 25. Total Travel Cost = 7:30 * 25. In the access db, it is stored as a text field, and then imported in vb as a string.
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Jul 1, 2010
I have a program that allows a user to select a program to run at a certain time for a specific amount of time all choosen by the user. Everything works with the exception of if my program has launched the other program, my program become non-responsive. Meaning I am not able to look at that window again. Not that one really needs too, because when time is up my program closes the program it opened, then closes itself. I just want to be able to see my program when the other program is running. how to do this and perhaps drop me some links, that would be wonderful. This is what I have coded, but like I stated there are no code errors.
[Code]...
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Apr 14, 2009
I am currently using vb 2008 and want it so when a user registers it will unlock all the extra features and stay that way even after the user quits and restarts the program... I already have everything set exept for the save feature. I don;t know exactly what to do. I just want to save the settings of my program so that they are the same every time somebody uses the program. I heard that you need to go into Project , then properties and then settings... But I don't understand what to do there...
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May 5, 2011
The program has errorhandle and write log function, however, it could not catch the error message in the program.
The following error message in Event Viewer. Error Module: oleaut32.dll ,version 5.1.2600.5512, error code: 0x000048f9
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Feb 27, 2010
Is it possible to auto-end a vb.net app? Let's say for 5 minutes it will kill its own process if it is not being used by the user or is passive.
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Apr 19, 2011
I need to make a program that executes other programs and makes then believe the time I want. For example, If my PC time is 6/4/2009 12:15am, I want the program I'm executing to think the time is 2/3/2009 6:00pm.
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Jan 21, 2010
we have this situation, we need to 'force' user to do stock opname at specified time, so when the time has arrived..the stock opname program will run while their current running is'freeze' until the opname is done..
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Jun 7, 2011
What is the syntax that should be used in order to check if 08-Jan-2010 is before or after today.
I mean:If 08-Jan-2011 < today's date Then
msgbox("08-Jan-2010 is in the past")
Elseif 08-Jan-2010 > today's date
msgbox("08-jan-2010 is in the future")
Else
msgbox("08-jan-2010 is today's date")
This is exactly what I need to know
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Jan 21, 2010
I am aware that if you wish to run a program at a specific time, the best way is to add it to the windows task scheduler. I have a forms application that accepts as input a text file and some button selections before the actual main runs.
Can this kind of program be scheduled? I realize I would have to hard code the inputs but does .net have any features to access the task scheduler?
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Nov 17, 2009
I'm making a new program so I won't be able to post my code here yet.
But I wanted to ask you fine folk how I can check if a program is running for the first time.
[code...]
Just start the program normally and when they click the menubar ask for the password they set in the first time
if it's a little iffy on my side but I just started this project and I've only made the GUI and I have no idea what so ever how to do this.
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Dec 16, 2009
I want to quickly limit the time that someone can use my program and do it without licensing software for now. Can I use an If'Then statement to check to see if today's date is later that a date that Ihard type similar to this conceptually. I am using VB2008.
If today's date > 1-1-10 then
Messagebox.Show ("Your trial period has expired.")
Else Form2.show()
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Nov 10, 2009
Im making an key counter and ive got the program to count all keys at the time, i just can't count mouse buttons, i would really like to have help with this, if any of you wanna help im online at my own IRC chat. [URL]..
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Aug 21, 2010
Is it possible to create a program to run a program in another time?I mean you can run a program and give it a different time, such as three hours against the program (only by that program) say that one hour is?
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Dec 20, 2009
I developped a small application with two date time pickers and a button user controls and it exports datatables to excel sheets. its working perfect on my pc using windows vista and office 07. but when i tested it on another machine using windows 2000 and office2000 i got the following error:
failed to activate control vb user controle. this control maybe incompatiblewith your application. make sure you are using the version of control that was provided with your application.
and for excel 2000. is it possible to get MIcrosoft Excel 9.0 object library downloaded and added as reference to vb
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May 30, 2009
i have a program that i made and i want it to check for updates everytime it starts i dont wanna use publish is there a way for the program to download the new version every time it starts and delete the old one?
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Jan 3, 2010
I'm currently trying to create a program that includes a text box (to input a number into), a button and a list box that will display the times tables for the number that is entered into the text box.
The idea of the program is so that a user can enter a number into the text box, for example, the number 5 and all the times tables (up to 12) will be displayed[code]...
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Mar 12, 2011
I want my program to work for a certain period of time, may be one month.. two month..
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Apr 8, 2010
how to start a VB.NET program at a specific time of the day, but I simply cannot find it. I've found an example that shuts down the computer at a specific time of the day, but having no experience with the Timer function, I wouldn't know where to start when hacking the code.As an example, I'd like the program to run at say 2:00PM and display a message. The displaying the message won't be hard (MessageBox.Show("Stuff")), it's just the starting .
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Mar 15, 2011
Is there a way to code, so that if your program freezes over a period of time (5sec), it just stops trying to do it, and goto something else.
"On ERROR" wont work, since its not a error. "Try" doesnt work ether.
Its because I'm am programming something that can login to a router thought telnet, and sometimes the telnet ActiveX doesn't read the buffer or the line proberly, so when the .GetLine() func is called, it freezes. And i want away to goto another point if it keeps freezing for more than 5secounds. The telnet ActiveX that, I am using is Dimac w3sock.
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