Title says it all, I get a format exception saying that the input was not in the correct format.
Code:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
If Integer.Parse(TimerBox1.Text) > 0 Then
[Code].....
my Vb 2010 midterm project is due a 8am ( > 2 hours). I have coded almost everything I need. Just before I was about to submit this, I noticed in the instructions that hours needs to be included as well. I have been trying to do this for about 2hrs now, and just can't seem to get it right.
[Code]....
What I am trying to accomplish is to display a msgbox when my timer reaches 10 minutes. Here is the code I have for my timer:
Code:
Public Class Form1
Private stopwatch As New Stopwatch
Private Sub yButton2_Click(ByVal sender As System.Object, ByVal e As
[Code]......
I have listbox and have set timer for auto selecting...
i want to stop the timer after selection in liatbox reaches 10...or you can say that after running that timer 10 times....
and after 15 min i wanna that turn on automatically....
finally what i want is :
a timer stops for 15 minutes after running 10 times ..
I've created a form that has a timer control. When this form loads it counts down before running a procedure. Simple.
Now I want to subclass this form in a new VB.NET project to so that another form inherits this form (an it's timer functionality) and runs a different procedure on this new form.My problem is that when I create the form in my new project the timer from the parent form seems to be running and when it's time is up it runs and code and crashes the VS environment.
I've searched high and low but have only found references to making sure the timer is disabled at design time. I've done this on the parent form but in this parent form's Load event the timer is enabled.... the purpose of the form. So when the child form loads it is enabling the timer. How can I work around this? Can I enable the timer from the child form? Timer is not visible when the child form loads so how do I manipulate it?
I'm creating a microwave oven and I'm in need of assistance if anyone is out there? I have 2 problems : my buttons dont work and I believe it's because I have two of the same name variable in local and global scope because the local one hides the global one in its scope. You have two variables called timeIs. My output is lblOut, everytime I try to change the names they underline in blue so I can't even check the start button. And also DisplayTime() to print 0 because it deals with its local variable.
Public Class frmMicrowaveThree
' contains time entered as a String
Private timeIs As String = ""
[code]....
i am working on a microwave app its very important anyways ill give up what code ive got so far and such but when i try to run it i get this error message: Visual Studio cannot start debugging because the debug target Microwave.exe is missing Please build the project and retry or set the OutputPath and AssemblyName properties appropriately to point at correct location for the target assembly. [Code]
View 5 RepliesI have a product database....in which I have productid,prodname,inventoryvalue,reordervalueI have to design a email system that as soon as the product reaches the reorder level it shud generate an email....but the condition is there will be many products in the database....and on one button click it should send only one email but with all product names those reached the reorder level.... tried the below thing but completely a waste...
Private Sub btnEmail_Click(sender As System.Object, e As System.EventArgs) Handles btnEmail.Click
'Open Connection
[code].....
I have a file in vb.net that i am using to read records. In the code behind my next button i read the next record in the file.How do i return to the beginning of the file when it reaches the end?Here is my code.
Dim sr As IO.StreamReader = IO.File.OpenText("CorkSouth.txt")
Private Sub Display()
If sr.EndOfStream = True Then
[code]....
I want to know if is there's a way to update a certain record if it reaches a specific date. [code] I wanted to automatically update the "IN" status to "OUT" status when the date.today = DateUpdate.. I am using MsAccess2003 to connect VB.Net2005express edition (using Odbc Connection) Coded it at back end(no controls)
View 1 Repliesi am having the hardest time trying to figure out why this While Not EOF keeps going even after it reaches the end of the file! What am i missing????
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I have a iframe setup. I would like to determine once the scrollbar reaches the bottom, it will display a link button. may I know how to accomplish it in vb.net?
View 3 RepliesIs there anyway to complete a progress bar just by going ProgressBar1.Value = 100 when you want it to finish. I have a button which starts a countdown, I need the progress bar to complete when countdown reaches 0. Ive already used the step version, but when I want to alert the length of the countdown, the progress bar finishes too late or too early.
View 13 Replieshow to get a progress bar to go up to say 50 then stop and it shopws label one when it reaches 50.
View 1 RepliesI am trying to remove a picturebox when my textbox reaches 5?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Start()
PictureBox1.Visible = True
End Sub
[Code] .....
I have a program that reads from a database...the database pulls its info from a site.it measures in 0 to 100 (%).I know it takes 3 days (i dont know if its EXACTLY 72hrs)..to get to 100%.Currently, i have a progressbar to read from the database field..which is the value.I'd like to 'estimate' the time left before it reaches 100...Is there a math formula for that?
View 3 RepliesI'm updating a database every few minutes in my program but I get this error
Duplicate entry '127' for key 1
Everytime the db row Id reaches 127.
My program plays sort of like a novel, where I add paragraphs to a multiline label whenever the user presses the enter key. Eventually the label fills with text so I have to clear the label to continue writing.What I need is a way to find how many lines of text are in my label, so after it passes line #50 I can make the label automatically clear itself and begin writing on line #1 again (as if the user just flipped to the next page of a book).My first idea was to turn AutoSize on and monitor the height of the auto-sized label box. After it passed a certain height I could clear it - but this didn't work because I need the label to be of a certain width.
View 14 Replieshow I can load another form when a condition is met? I want to load form Result.vb when the lblQuestionCount reaches 5. Can anyone tell me how to do this?
View 9 RepliesI'm attempting to run my first program in vb.net and everything works BUT the array.
Here is the archive: [URL]
The problem occurs in the Maps.vb file on line 17 when the assignment of variables to the array starts. When running the breakpoint debugger you will notice that when it reaches line 17 it just skips the whole sub and then the next breakpoint is unable to be found.
I have a dropdownlist and a textbox with a button on a form. When a button is clicked it does not go to my onclick even in the code but it goes to my dropdownlist's selectedIndexchanged event. How can I fix this?
View 4 RepliesWhat I need to do to make this code work for hours as well?[code]...
View 6 RepliesI need an accurate timer to interface a Windows application to a piece of lab equipment.I used System.Timers.Timer() to create a timer that ticks every 10 msec, but this clock runs slow. For example 1000 ticks with an interval of 10 msec should take 10 wall-clock seconds, but it actually takes more like 20 wall-clock sec (on my PC). I am guessing this is because System.Timers.Timer() is an interval timer that is reset every time it elapses. Since it will always take some time between when the timer elapses and when it is reset (to another 10msec) the clock will run slow. This probably fine if the interval is large (seconds or minutes) but unacceptable for very short intervals.Is there a function on Windows that will trigger a procedure every time the system clock crosses a 10 msec (or whatever) boundary?
UPDATE: System.Timers.Timer() is extremely inaccurate for small intervals.I wrote a simple program that counted 10 seconds several ways:
Interval=1, Count=10000, Run time = 160 sec, msec per interval=16
Interval=10, Count=1000, Run time = 16 sec, msec per interval=15
Interval=100, Count=100, Run time = 11 sec, msec per interval=110
Interval=1000, Count=10, Run time = 10 sec, msec per interval=1000
It seems like System.Timers.Timer() cannot tick faster that about 15 msec, regardless of the interval setting.Note that none of these tests seemed to use any measurable CPU time, so the limit is not the CPU, just a .net limitation (bug?)For now I think I can live with an inaccurate timer that triggers a routine every 15 msec or so and the routine gets an accurate system time. Kinda strange, but...I also found a shareware product ZylTimer.NET that claims to be a much more accurate .net timer (resolution of 1-2 msec). This may be what I need. If there is one product there are likely others.
I have a timer on a page in ASP.NET.
After a certain period of time elapses, I want to disable the timer.
I want to put a static variable in the timers tick event that will track how many seconds have elapsed.
My question is, will this work?
If user X and Y are viewing the page will they both have separate local static variables?
What is the best method of shutting down an ASP.NET timer after a certain elapsed time?
I have a windows application that need to process som quite time consuming jobs. In my first try i did all processing under
the form thread. The result was bad response and update of the form due to the heavy jobs.To get around the problem with bad response from the form i created a new class "processing" where i put all the data processing. Then i instanciated a background worker where i in the "doWork" sub created a new instance of "processing".The "processing" class creates a timer from system.timer, and the timer drives the processing.On the Timer event Elapsed the timer starts a new thread from the thread pool.
My problem is now when i want to asynchronously close the background worker (with the corresponding function call what ever it is called ...) there is still a timer thread out there that causes exceptions for me.
1. How can i close my background worker and at the same time have the timer to be stopped?
2. Is there a way to synchronize the timer event so that the timer executes from the background worker thread?
3. Is there a better approach for me to adapt?
I want to create an array of timer in vb.net. My problem is that how will i raise the tick event for a particular timer, say mytimer(x).tick and inside the tick event there is also a button, say mybutton(x) which changes location every interval. for example:
public class blah
dim mybuttons(20) as button
dim mytimer(20) as timer
private sub form_load(....) handles me.load
for x as integer = 0 to 20
[Code]...
i dont know what to do next, all i want is to pass the button mybuttons(x) to mytimer(x) tick event, in which their index number are the same. i want to create one timer per button. how to do that? please help me and post example codes. i've researched the net but i cant understand passing variables, addhandlers, etc. i'm just new to programming object oriented.
How can I incorporate the timer so once a page loads the timer activates, waits a few seconds then I tell my program what to do next.I tried this code but it didnt work:
Timer1.Interval = 5000
Timer1.Enabled = True
Timer1.Start()
[code]....
Everything is nice and dandy on my pc, then I compile, move it to its final destination and I doesn't work! At first I thought it was a OS problem, but both machines has win7, I then thought it was a compilation problem, installed visual studio on the other pc, recompiled still with no luck, then it dawned on me, may it be a problem of 32bit vs 64bit?The piece of code is this:[code]....
By the way is not a problem of mouse_event, is the timer that doesn't work
I have a timer in vb.net and it's interval is 1000ms ,. i have placed in it's timer_tick event a code that will print screen the screen and save it to a database.The problem is when i click outside of the form, or loosing the focus of the mouse to the form containing that timer/printscreen, the timer stops. As a result the printscreen also stops.here are it's properties:
generate member = true
interval = 1000
modifiers = friend
Which of the MediaPlayer events is related to "FileEnd" (when the playing file reaches to its end)?
I tried "EndOfStream" event, but it didn't work.
