Stop timer from other form?

Question

1.00/5 (1 vote)

See more:

Hey guys,
still on my project ;-(
aniway, for this question i have 2 forms: 'A' will be the main and 'B' the secondary.
A is sending countDown (for e.g: 15:00 minuts) to B, B is shown and the timer in B start runing backwards.
assuming i need to pause (or stop) the timer without killing B, i suppouse to do like this:
dim frmB as new B
frmB.Timer1.Enabled = False.
well... it dosent work!
important: i need to stop the timer inside a function in A.
the function loop on numbers and send sms. when i hit the send button on the second time, the send pause but the timer dosent. the send is from A form, the timer is in B on purpose from several reasons.
now, i tried byVal, byRef, public function and so on...
i guess It is not my specialty :-(
any advice?
thanks,
oron.

Posted 26-May-15 22:00pm

oronsultan

Add a Solution

Comments

Andy Lanng 27-May-15 4:24am

hmm. I am surprised that A can't affect B's timer.

How about creating a public method in 'B' that 'A' can call (call it StopTimer for eg). That method in 'B' stops disables the timer. 'A' calls that method in the instance of 'B'.

oronsultan 27-May-15 4:39am

i tried that to. it want work.
but maybe this information will help:
on the first click on btnSend, the timer start running and the messages start to send one by one. on the second click, the timer still runing but the messages stop. i did what you said. the StopTimer function entered and set the timer to enabled = false but after the function end, the debugger goes to the timer_tick again and in the immidiate window, the timer is set to enabled = true.
its seems like any changes on B form dont catch. even if i put simple label on B form and change his text, it want change during runtime.

2 solutions

Solution 1

In this Code-Line :

VB

dim frmB as new B
 frmB.Timer1.Enabled = False

... you create a NEW Instance from Form B and try to work with it.
I think it will be better, you do it like this :

VB

dim frmB as Form = B
frmB.Timer1.Enabled = False

Posted 27-May-15 0:27am

Ralf Meier

Comments

oronsultan 27-May-15 6:42am

dear ralf,
after writing this line:
Dim frm As Form = B
the error i get is this:
B is a type and cannot be used as an expression.
i read that the problem could be in the queue of the timer. the timer rise and hase certain amount of queue he have to do. let me remind you that any changes on B form can't be done, not just the timer.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

oronsultan · Accepted Answer · 2015-05-27T01:29:00

Got it!
in the global variables create delegate and reference for form B as follow:

VB

Private Delegate Sub del()
Dim slice_SendingStat As B = New B()

creating a function in A as follow:

VB

Private Sub PauseTimer()
    slice_SendingStat.TimerEffects.Enabled = False
End Sub

in the btnSend_click function, put this:

Me.Invoke(New del(AddressOf PauseTimer))

that will get access to the form B delegate and pause the timer!!!