I'm new with VB and a time program I'm trying to complete is incorporating a tick event. I have the code I need to use, and have the timer placed within the VB Designer but when I start the debugging process, 12:00:00 pops up in the text box. I would like to have it start incrementing after I set the hour, minute and second and initiate the Set Time click event. The code I have for the timer is
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i want to execute different subs at each tick , is that possible ?
View 1 RepliesI used a timer in my user control now when Timer_Tick event is fired I want to raise an event like Ticked. I created:
public delegate sub myDel()
public event myevnt as myDel
in Timer.Tick
I used raiseEvent myevnt. I also raised the event from a button click. This event is handled in a windows form where the control is used, My problem is event is firing when the button is clicked but not firing from the timer.tick. Is there any problem from Timer.Tick.
I am attempting to create a timer that will activate a tick event every 1 second until stopped by an "If" statement. The tick event should then drive a clock measuring time in units of hours, minutes and seconds. The if statements handle the time readout, timer stop and activate another form after a set number of hours have elapsed. I have tried several different methods and while my application is running, it does not add increments to the integers representing the time units, refresh the displayed time units, or perform any of the timer related functions. I assume the cause is that I just don't know as much as I think I do (which isn't much)
Here is the applicable code:
Imports Microsoft.VisualBasic.ApplicationServices
Imports System.IO
Public Class SessionManager
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I an trying to modify a queue within the tick event of a timer. Is this even possible? A sample follows:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim NewQueue As New Queue(Of String)
NewQueue.Enqueue("alpha")
NewQueue.Enqueue("beta")
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create a looping display (first "alpha", then "beta", etc.). What's missing? Also, why can I declare the Queue outside of a sub, but I can't fill it there as well (enqueue)?
I'm trying to make my application react the way I want if the internet connection goes down, because the application need a permanent internet connection to work properly. This also includes if the server my program is trying to connect to goes down/stops or something.
What I want is that if a exception occures when trying to connect to the server, i calls a sub wich stops all timers, disables some buttons and comboboxes. At the same time it starts a new timer named "retrytimer". The retrytimer checks every fifth second if the connection is re-established. If it is, it activates all the controls and disables itself.
For some reason, the retrytimer tick-event never occures. I've tried inserted a breakpoint on the first line of the event-sub, but it never hits. If I check the enabled-property of the timer, it is set to "true". Why does this happen?The timer is made in the design window, and it's default enabled-property is set to false.Here is my sub wich deactivates some controls and starts the timer:
vb.net
Private Sub connectionLost(ByRef errnr As Integer) connected = False If starttimer.Enabled Then starttimer.Enabled = False If resulttimer.Enabled Then resulttimer.Enabled = False If radioposttimer.Enabled Then radioposttimer.Enabled = False If runningtimer.Enabled Then runningtimer.Enabled = False
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But here is the funny part! If I start the application without a internet connection, everything works the way I want. But if I disable the internet connection in the middle of my program, it acts as described. The lasts messagebox in my connectionLost-sub are shown, and the timer is set to enabled = true.
Does anyone have a clue? EDIT: I think I've narrowed down the problem quite a bit.It seems like the timer won't work correctly if the connectionLost-sub is called from within a BackgroundWorker. If it is called from something else than inside a BackgroundWorker, it seems to work the way I want.
I am working on a football simulation. I'm writing the code when a quarter or half ends. If any of you ever played Madden Football you know that when the time reaches zero the play calling screen disappears. This is exactly what I am trying to do. The play calling screen in my case is a dialog controlled by the main game screen (the main form controlling most of the game). I use the .ShowDialog event to display it. What I want to do is close this dialog on a tick event.
I'm not sure how to access this dialog if it was created as a local variable. I assume it's like finding any other control that was dynamically generated at run-time but I can't wrap my head around the proper syntax. Once I get the dialog in the tick event I want the dialog to close and return all control to the main game screen. I've never tried to close a dialog without the user clicking a button on the dialog itself. This is different because the parent control is closing the dialog with its own event (Tick).
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.
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I have a quick question regarding the serial port and timer tick event. Basically i have a micro processor connected to the PC via the serial port. With a baurd rate of 38400 set.When the PC sends the micro ":K + VBCRLF" the micro response with a string of information (ASCII encoded) and delimited with a "," and at the end of the transmission a cartridge return line feed is added.Example of sent string:
"12,1134,123,545,76,6868,34,232,1,2,3,6,7,8" These numbers are then split using the VB mystring.split(",") function into an array of strings, then the numbers are converted using ctype. After which my UI is then updated.I have Witten the code in a tick timer event using a timer count of 300ms. Although the program runs and the UI is updated i end it with lots of exception errors. I think allot of this is down to the serial port either timing out or not reading complete string.Or possibly the timer has not executed all the code before another tick event happens Even after adding a few try catch statements i am still having problems. Can anybody suggest a better way of doing it?I was thinking of using a do while loop and at the end a sleep function instead of the timer tick event.I need the speed as i am trying to read and display live data.
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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 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.
So a timer's maximum interval is 1 which is a thousand ticks a second. A Stopwatch's frequency is 2238906 ticks a second on my pc...
I am wondering if there is a reliable way to trigger an event for each tick of the stopwatch without missing any ticks...
If I can somehow get a Tick event for the stopwatch, I believe I can increase the resolution of my input recorder....
I have a program written in vb.net 2003 which has text boxes for integer input. When the boxes appear, they are filled with the default value of zero. When the program is run on a computer running Windows XP the cursor appears in front (to the left) of the zero, but when run on Windows 7, the cursor appears behind (to the right) the zero.
In xp, if the user enters 1 (one) a 10 is diplayed and the user must delete the zero. In Windows 7, if the user enters 1, there is a leading zero which disappears once they have exited the text box. Is there a way to force one presentation or the other?
Suddenly whenever I build my applications, although I get a "build succeeded" result - the executables are either not updated or updated in the "wrong" place.So for example if after succesfully building I press <F8> to step through the code I get a message saying the "source is different from when the module was built"I have no idea how to begin tracking this down - how .net determines the placement of files and so forth.
View 2 RepliesIm working on a program that is about to drive me nuts figuring out how to round and show only 3 or 4 numbers past the decimal placement and also show the scientific notation.
Here is an example of the code.[code...]
The problem here is that most of these calulations turn up so long that my text boxes just show a small portion of the answer. I have really investigated rounding and decimal placement but nothing seems to work...does anyone have a solution?
I'm working on my final assignment for my Visual Basic class, and the last assignment is to create a program which stores CD collection information. It works fine, but the task is to create a structure for the input information and use it in the Add buttons click event code.I'm not asking to have my homework done for me, but i'd like some advice on where I should declare the structure and how. Everywhere I try and declare it, it ends up closing that particular sub procedure or section. I've tried looking up plenty of help sites to learn about structures, but sadly they and the book are both very vague. The instructor also mentioned padding each entry, but that I'm pretty sure I know how to do
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I would like to have a header text above the row header.... Is that possible? "here " is the place where I want to have the text in ...
| here | Column 1 | Column 2
| | data 1
|-----------------
| > |
I have a VB6 program in which all graphics are drawn with lines that are plotted to specific points in the controls (forms, picture box, etc.).
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I'm trying to do two things. I have a Richtextbox which i'm continously adding text to from a standard text box. I want that new text to appear at the beginning of the existing text, not at the end of the existing text.I've got the following code but it's not working. The new text keeps going to the end of the existing text.
Dim newtext As String
newtext = TextBox1.Text
RichTextBox1.AppendText(newtext)
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I am trying to put an unbound button in the last column in a DataGridView control and it appears way, way off to the right when I run the app. I have to scroll all the way to the right to get to the buttons and then manually resize them to show up the way I want them to. I am using the Edit Columns feature found in the Smart Tag of the control. It works ok when I place them anywhere else in the columns! It only messes up when I try to place them at the end of the columns.
View 1 RepliesI have a situation where I want to run the code in the Tick event ONLY ONCE not on the interval i have the timer set too.So I figured I would just do thisRaiseEvent MasterTimer.TickBut that gies an error saying mastertimer is not part of the class.Why won't that work?How do I call the Tick event manually without Start() Stop() the timer?
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('767f329f335e418494d276b159cf89c1')
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Is it possible to have smaller intervall than 1 in a timer?
View 7 RepliesSuppose I have meeting 31/1/2011 9.30 and when current time becomes 31/1/2011 9.30 it displays a message: "You have a meeting". How can I do this with VB.NET?
View 1 RepliesI'm working on a project that will require me to react to 5 separate events generated by an external device and then do something after a certain delay. The events will normally happen one at a time but may occasionally be simultaneous.
Imports System.Windows.Threading
Class MainWindow
Private TimerList As List(Of DispatcherTimer)
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I have three checkboxes on my datagridview namely, Yes, No, Inv. If the value is set to True in the table which populates the datagridview the respective checkbox is checked and if false unchecked.Now, when on runtime I try to check a checkbox on the Yes Column I receive the followinf error;
DataGridView Default Error Dialog
The following exception occurred in the DataGridView:
System.FormatException: is not valid value for Boolean. -->System.Formatexception: String was not recognised as a valid Boolean.
at System.Boolean.Prase(String value)
at system.componentModel.BooleanConverter.ConvertFrom(ITpeDescriptorContext context. CultureInfo culture, Object value).........
The No and Inv allow me to check and uncheck the checkboxes as many as I want without generating the error.
I am creating a game.With each timer tick a new picture box is generated and displayed. This works.[code]Now with a different timer I would like to move each of these generated picture boxes down 5 pixels with each timer tick.I cannot access the pctAlien variable outside of the statement it is declared.Is this the best way of generating the pictureboxes?
View 2 Replieshow to restart timer when is end? my timer code is:[code]
View 1 RepliesI'm in the process of designing a game, how can i make the game tick over in time?
First thought would be a timer but is this the correct way?
Also I'm looking at building this game in WPF, By memory WPF does not have the timer control, what would you do then?
I'm working on a project that will require me to react to 5 separate events generated by an external device and then do something after a certain delay. The events will normally happen one at a time but may occasionally be simultaneous. Is this a bad idea and if so why?
Imports System.Windows.Threading
Class MainWindow
Private TimerList As List(Of DispatcherTimer)
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I am an experienced amateur vb programmer with SQL and Access experience. I have recently been asked to prepare a program to log Group Meetings attendances. There are the following tables:
Members
MemberID AutoNumber
GroupID Number
MemName Text
IsPresent Y/N
Groups
GroupID Autonumber
GroupName Text
Meetings
MeetingsID Autonumber
MeetingDate Date
GroupID Number
MemberID Number
AttendanceID Number
Attendances
AttendaceID Autonumber
MemberID Number
MeetingID Number
ISPResent Y/N
I made my relationships...
MemberID in MemberTbl with MemberID in AttendTbl....
MeetingID in AttendanceTbl with MeetingID in MeetingTbl
MemberID in membersTbl with MemberID in LodgeTbl and
LodgeID in LodgeTbl with LodgeID in MeetingsTbl
Each group has 1 meeting every month. What I want is a way to list all members (in datasheet) that belong to a particular group with a checkbox depending if they were present at the particular meeting. I have tried AppendQuieries but that didnt work. On the main form I have meetings as RecordSource with GroupID (user input). after update Sunform is updated and a list with all members belonging to the group appear with a tick box next to their names. The Child/Master link is by GroupID. What I am trying to do is, in the list that appears in the subform I want to be able to tick persons present and their name to be logged in attendance tbl as present.