As the the Title suggest's i want to make an alert noise, such as a simple beep, play after a timer has expired. I have the timer working, just dont know the function for making a noise?
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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
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I'm writing a metronome program (a.k.a. click track; it's used for keeping you in time in music), and can't for ther life of me figure out how to play a sound byte (a short beep) as the beat.
I know I need to place this code in the Timer Tick event, but I just have no idea how to import/reference etc. the sound.
I am writing a program that has to print an alert message in a textbox if the user inputs invalid data. Invalid data would be a negative number. The textbox is the same textbox as the result would be in provided they input valid data. Here is what I have but it will not print the alert.
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If user uses quotes (Examples: Linux "in" mobile phone), then noise word is not removed. What is best way the handle this.
Does anyone else get a noise from the WebBrowser whenever you load a page? Internet Explorer does this too and I want to turn it off. Does anyone know how to silence this?
View 10 RepliesHow I can get the Media playing now playing using Sendmessege or wmp.dll?
View 5 RepliesWe plan on selling an application that I've made and we want to be able to force the user to buy a 1-year license for it. And of course after that 1-year we want the program to stop working and force the user to purchase another license.
I've seen many things in VB.NET with certificates/licensing but I'm just not familiar with them to be able to take it any further. And right now I don't have the labor to spend hours messing around with it.
I am looking into programming an application that detects noise levels. If the level is over a specific threshold it will lock a logged on user account. The idea behind this application is to reduce noise levels in a busy IT suite. My question is has anyone written anything similar and did it prove to be effective and is VB the best programming language for the job?
View 1 RepliesI am a newbie (retired social worker) using Visual Basic 2010 Express edition and need some help with an animation for an eLearning lesson. The animation illustrates a type of white noise (like TV static) called dynamic visual noise. I've got much of the code worked out (with a lot of help) but I discovered that the speed of the animation, using this code is wrong and need some help to fix the code, get it working correctly.You can view a Flash demo of this noise animation at url...More info here about the visual noise animation (even a Delphi source code and Windows demo): url..The animation has a 640 X 640 canvas, with 8 X 8 white and black dots filling it using 80 across and 80 down, for a total of 6400 dots. Some of these (approximately 400) change every second (1000 Ms) from white to black or black to white. These 400 dots need to be selected randomly every second.
The VB code I am using is missing the ability to randomly select the 400 dots per second which are the dots to be changed (white to black or black to white).Here is the current (commented) code that needs an addition of a random generator for the 400 dots every second that will be changed:[code]It would also be a huge help if I can change the specific number of random dots so I can try values ranging from 390-400 dots per second to see which value best replicates the precise animation speed needed.
I have user log in logic in my web app. after successful log in, i set the user id in Session, so i can keep track of the user. and in my master file page load event, i do
Session.timeout = 60
so session should timeout after an hour. but my session times out at around 10 - 20 minutes. What am i doing wrong? i bet it's obvious.
My Asp.net Session Expires immediately even though i did the settings in web.config file,
<system.web>
<sessionState timeout="2880" mode="InProc" cookieless="UseCookies"></sessionState>
<customErrors mode="RemoteOnly"/>
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i did above settings in web.config even then it expires after approx 3 minutes..
I've been trying to get some help for this in another thread,but it looks like it's a task that is going to need a wider audience to try and find someone who knows something about writing/creating procedural textures at the pixel level in VB.Net. The VB6 example I'm trying to convert to VB.Net is attached to this post.
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I have a login with "Remember Me" checkbox forkeeping people logged in but I 'm not understanding the Expiration with IsPersistent values.How would I set the expiration if IsPersistent is True andif the user doesn't check the box then they should be loggedout as soon as they leave the site, How do I set the experationfor that, I'm confused as to what to do.
Code:Private Sub btnLog_Click(ByVal sender As System.Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnLog.Click Dim accountSystem As Manager.CustomerDB = New Manager.CustomerDB Dim customerID As String =
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I have been reading up and trying to understand the difference viewstate and session and as i am only storing a database id i believe i have settled on Viewstate.
Am i right in saying that a viewstate never expires until the browser is closed? One of the issues i have with Sessions is that sometimes the people completling my websites forms can take and age to do so and the session can expire.
Is there a way in Visual Basic to check if the user's password is set to never expire in Active Directory? 've found a way to find the last date it was changed, but I can't find the other available options.
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Where can I find a list of all available objUser properties?
I have a script that reads a form and puts some info into a cookie:
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The time is properly set right before it redirects, but when I try to print out that value this way (I have also tried Dim oCol as HttpCookieCollection = Request.Cookies, but I get the same result):
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I want to create a program that will close itself when the user was idle(not touching/moving the mouse and keyboard) for about 5 minutes...but I have a problem in how to track a user's idle time so that I could set the closing action. Could anyone give me a simple example?
View 2 RepliesI'm developing web site using asp.net. In my web site after login i set session for the logged user for my web site need. and on each page i checked whether that session is null or having value and depending on the value i redirected to the login page.My issue is that after login i want to redirect to the previously browsed web page and i done it by using following way-code on the particular page for checking session value-
if (Session["EmployeeID"] != null)
{
}
else
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c# - redirecting to the previously browsed web page after session expires
View 2 RepliesI was just thinking if there is any component which monitors sound output. My intention is to recognize a particular sound coming out from my soundcard. I know its an issue about the driver of my sound card but is there a way I can get atleast noise level coming out of my speakers and maybe draw a graph and detect the peak at when the sound is played?
View 7 RepliesI have just completed a custom banking & accounting software application for a stingy client who doesnt wants to pay-up! How do i make the application a trail version that will expire in say 30 days, and also ensure that whenever it is installed, it checks for first installation and indicate remaining trial days.
View 2 RepliesIs there any way to make a ValidatorCalloutExtender popup a standard alert box?
View 1 RepliesHow do i create an alert using DateTimePicker1 and MonthCalendar1?
There are two seperate forms. The main one, where the one opens from and the other one where you set the date/time. And how do you integrate the notification with NotifyIcon1?[url]...
What 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
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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()
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