I am using serial port to send packets in a form. There is a delay between two common packets, say 20 seconds. I used to use sleep to delay 20s before the second packet send.But sometimes I need to send a special packet every 4 seconds to keep device alive before the 2nd packet send. But during sleeping I cannot do anything.Per a suggestion yesterday from an expert, I changed to use timer solution. I set Timer1.interval = 4,000 and Timer2.interval = 20,000 and enable Timer1 and Timer2 after the 1st packet in Form1. After the 2nd packet is read to buffer, I use "while" to wait there until 20s overflow in Timer2 to send this common packet out. At the meantime, Timer1 is supposed to overflow every 4s to send the special packet. Now the problem is:
I'm trying to figure out the best way to add delay. From looking online I believe a timer would work best but I'm having trouble with the code. Basically what I'm trying to accomplish is a GPI debounce set to 200ms. the Timer3 properties interval is set to 200 and its enabled = false. Here is what I am working on.
I'm using Visual Basic 2008 Express Edition.I'm working on a class. At various points, I want to insert a delay between executions of the code. Nothing terribly large. Around 50-200 miliseconds. It doesn't seem like much, but it makes the program run better. I'll probably randomize the length of the delay later between those two marks. So basically the code would go...SomeFunction()timer delaySomeFuntion()I have the timer declared as
Private tmrTimer As TimerAnd each place I want to use it, I simply redeclare it. Or I might add it to the constructor of the class. Either way. Just thinking adding it to the class constructor would probably be a better idea. tmrTimer =
[Code].....
End SubUnfortunately, I get the error "Handles clause requires a WithEvents variable defined in the containing type or one of its base types"Now remember, this is all contained in a class, so theoretically speaking I can simply move the class file from project to project and reuse it, without ever having to worry about how the class works. Reading through the Timer specifications, I probably need to do some cleanup on the timer after I use it. Am I correct in this?
What line of code would I need to use the timer function just as a delay, so like as lines are being executed, once it gets to this timer it waits for say 1500 milliseconds before execution is continued.
is the first time I tried to use a timer - can't understand why it doesn't work!I need to suspend the main thread for a preset time 'delaymSecs' then let the thread continue.I tried this code fragment:-
I am running an application to control at 1, 10 and 100 Hz to compare their response for a control systems class. I have a timer that reads data from hardware, a timer that updates the screen and does the control, and a timer that writes data to a file. I've been having problems with the speed of the write timer, so I created a buffer.It takes 0 ms to load the buffer, and the buffer is written to file using a synchronized streamwriter and a thread every 100 iterations. It also flips back and forth between two buffers so there are no read/write conflicts.If I try to run at 10 Hz, the timer executes on average every 109 ms. If I try to run at 100 Hz, the timer executes on average ever 15-16 ms.
it is possible to force the timer to do the code within the tick event before the delay.In other words..Usually the timer when starts it delays 'x' seconds according to the interval settings then process some codes then delay again 'x' seconds.What I want here is to do the code then delays 'x' seconds.
I am a VB hobbyist and a new one at that. I am trying to create a transition effect in VB.NET 2008 when a certain form closes. The transition will take the form's current BackColor and slowly drop all the RGB values in it to 0 via a loop, obtaining a Fade to Black transition. I was able to come up with the code below. It works great. Maybe too great. It goes so fast that there is no transition. To the human eye it looks like the screen just went black instantly. Is there an easy way to enable a delay or pause in the below code to slow the loop down so that the end user sees the transition, and not just a quick jump to black?
I have an application in which I save transactions. So I have a datagridview populated with records and i test for changes in the datatable when saving.then i loop through the changed rows and save in the following order:I have a command that saves a wage.then a command that saves interest.I use this to save as a transactiondate:
but sometimes the code is executing the two commands on the exact same time. Now I have a query that displays a running total and on order for the running total to work properly no two transactions should have the same datetime for a particular person.how can I add a delay between the two commands to ensure the datetimes are saved differently?
im looking for a way to have my program wait a certain amount of seconds before it goes on to the next command, ive tried the sleep command but that freezes up my program and i cannot let that happen, ive heard of using timers as a delay but i don't really know how to do that.
I am puzzled by a delay in my data appearing (sql sever) when I open my program. (this can be around 5 to 6 seconds). If I open it a second time it appears instantly, have I done something wrong, or not done something. I have connect to a MS access database that connection is instant always.
I am trying to change to form backcolor from one colour to another with a time delay of 1 second. I have tried various things without success and this is the best I can come up with:[code]The problem I am getting is the colour is not changing until the loop has finished.
I need a way to allow another form to load after my program display's an introduction cut-scene without loading the form in the middle of the cut-scene. Sort of like a delay.
Quick question - if I have a timer set to 5000 (5 seconds) and the code in the timer takes longer than 5 seconds to run because of sql stuff, will the timer wait until the code is done till it fires again?
I know that time delays have been covered before around almost everywhere. however a method that forgoes forcing the GUI to become temporarily non-responsive, is all but a myth, or at least to my findings. i have the need for a GUI program to delay before the next command, however using the current method, detailed following, it causes the desired effect however it dose make it much less polished as when you click anything else on the GUI it goes un-responsive for the directed time. [Code] make a sub called say Tdelay( milseconds as integer) and have it run a loop as many times as the milseconds variable indicates and each time making the thread delay for 1 milsecond and then update the GUI/form in some way, then re-loop.
I have 5 Picture Boxes, each picture box has an image but all 5 of them has a visibility of false. I have a button, when clicked will show 5 of the images. But showing the 5 images with a delay. So it's going to be
I have a timer calculate the mean and stddev from listbox items. However my code seems not to be the best. After a while my app is slowing down, other timers is hacking ...[code].......
I want to make an application witch involves logging into google. It is basically a small application to always have your gmail with you without always having to go to the web browser and log in. Basically what I want to do is, when the person signs into their google account (or the page url changes) I want the webbrowser to refresh and go to a new point in the form and create an animation using a timer. I dont need advise with the animation, I just need to know how to link it together with the person signing into google. And also, If it's possible I would like to have the person log in without the actual google web interface, but with 2 textboxes and a button. I am using Visual Studio 2008.
I have a form that is currently working how I want it to. I want it to update every 30 seconds. I have set the time to 30 seconds but can you verify I have the correct code in my timer? Do I need to reconnect to the database every time it counts down from 30? here is my code that runs on form load...
I have a list of song format .wav. I want to play the first song until it finish after that the second song will be play .. etc. The problem I used timer to play song and I put the time for each song 1 minute all song played together. I want to arrange that when the first song played all song hold until the first song finish then the second song played the third song hold until all other song finish...etc.
i have added a timer to my form but i have no idea at all on how to use it.[code]I need to add a timer or something betwwen the 2 sendkeys for 2 seconds..
