Timer not starting on load event

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hello friends i am making exam application on vb.net i have added a timer of 20minutes on load event of form which contains questions but after loading the form the timer is not starting please give me some solution on why it is not starting. i as sending you the code which i wrote.

VB

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Me.alarmTime = Date.Now.AddMinutes(20)
        Me.Timer1.Start()

VB

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs)
        If alarmTime < Date.Now Then
            Me.Timer1.Stop()
            MessageBox.Show("Time's up.")
            Me.Button1_Click(sender, New System.EventArgs())
        Else
            Dim remainingTime As TimeSpan = Me.alarmTime.Subtract(Date.Now)

            Me.Label31.Text = String.Format("{0}:{1:d2}:{2:d2}", _
                                           remainingTime.Hours, _
                                           remainingTime.Minutes, _
                                           remainingTime.Seconds)
        End If
    End Sub

Posted 6-Jun-13 18:46pm

sachin bhise

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Comments

[no name] 7-Jun-13 0:59am

Have you checked that the name Timer1 correct or you changed it in properties..

Sergey Alexandrovich Kryukov 7-Jun-13 1:11am

The problem is not here. However, no one should use such sloppy names as "Timer1". They violate Microsoft naming conventions.
I put the solution, please see.
—SA

[no name] 7-Jun-13 1:14am

I don't know, but can't we change it???

Sergey Alexandrovich Kryukov 7-Jun-13 1:40am

Change? Why do you think VS has refactorization engine? It's very convenient. As to the naming conventions, please see FxCop.
I changed my answer...
—SA

Sergey Alexandrovich Kryukov 7-Jun-13 1:06am

You did not show the timer creation and setting its period. The idea to combine timer and DateTime is quite bad.
What is "Date.Now"? There is System.DateTime.Now. But you don't need to use it, just the timer is enough.
Is it System.Timers.Timer or some other timer type?
(Generally, make sure that no relevant information is missing.)
—SA

sachin bhise 7-Jun-13 1:10am

Toywarrior:yes i have checked the name its correct

[no name] 7-Jun-13 1:15am

Please follow Sergey Kryukov......

sachin bhise 7-Jun-13 1:11am

Sergey Alexandrovich Kryukov can u give any other solution or coding to apply a 20 minute timer

Sergey Alexandrovich Kryukov 7-Jun-13 1:48am

I again updated the answer, please see.
—SA

TnTinMn 7-Jun-13 23:32pm

Your Timer.Tick event handler is not wired up.
Either add:
AddHandler Timer1.Tick, AddressOf Timer1_Tick
to the Form1_Load event handler or change:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs)
to:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

4 solutions

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-06-06T19:09:00

Please see my comment to the question.

Use System.Timers.Timer:
System.Timers.Timer[^].

Don't use System.DateTime with the timer. Simply set the timer's Interval property to 20 min.

[EDIT]

No, you need to use JavaScript timer. This should explain you what to do:
http://www.w3schools.com/js/js_timing.asp[^].

I don't even what to explain and think about what happens if you use the timer on the server-side. Just understand that all what server side does is: it accepts HTTP request and generates HTTP response. This is all the whole runtime of an ASP.NET page. Analyze it, and you should understand why what you did makes no sense at all.

—SA

stupid code maker · Answer 2 · 2013-06-14T21:08:00

Solution 3

insted of timer1.start() use timer1 . enable =true and timer1.stop() to timer1.enable=false

Posted 14-Jun-13 21:08pm

stupid code maker

Bruno C Soares · Answer 3 · 2013-06-15T18:45:00

Solution 4

See this: www.codeproject.com/Articles/24465/Small-Alarm-Programmed-By-VB-NET[^]

Posted 15-Jun-13 18:45pm

Bruno C Soares

sachin bhise · Answer 4 · 2013-06-06T22:26:00

Solution 2

designed a new form and then added all the code in that form working excellently.....
but i know that's not a perfect solution will do R&D on the problem later

Posted 6-Jun-13 22:26pm