ValueChanged event fired many Times

[Aicha]

Hello,

I use RadNumericUpDown for a list of qcm and users can put their score for each question.
and I faced the following problem   :
 
 the ValueChanged event is fired many Times !!

can you help me a bout that please  ?

thanks aicha

[Vladi]

Hello Aicha,

We were able to reproduce the issue only while debugging.

The event is triggered only once when you change the value in the control via typing in the textbox or clicking the arrows. But when you place a breakpoint in the event it is hit multiple times. This is a common issue in some events which causes the breakpoints to be hit multiple times and at the same time behave as expected when not in debug mode. This issue may be caused by the focus getting reset to the control or another related scenario.

I would recommend to you to debug this and any other events in which you experience this issue with for example Debug.WriteLine() method without explicitly placing breakpoints in the event.

Hope this information is helpful.

Kind regards,
Vladi
the Telerik team

[kity]

Confirm too.

[kity]

confirm too

http://www.telerik.com/forums/radnumericupdown---why-bug

[kity]

May be you have biding twoway+codebehind logic update.
set biding ot OneTime mode

[Vladi]

Hi,

As previously mentioned the event is correctly triggered only once if there is not break points inside the event handler. This is a common issue with some events which rely on the focus in order to be triggered and when there is a break point inside them the focus is moved and may cause multiple unexpected triggers.

I recorded a short video showing how the event is triggered only once when clicking the Up or down arrows.

Regards,
Vladi
Telerik

[Rob Ainscough]

I can confirm the problem still exists in 2015 Q1.  Has this issue been fixed in 2015 Q2 release or are you saying there is NO fix?

Debugging is an important part of the development process, so it's not acceptable to suggest a developer NOT place a breakpoint in event code.

 Cheers, Rob.

[Vladi]

Hi Rob,

Thank you for contacting us.

As this thread is a bit old could you give us some additional details about the exact scenario in which you experience the multiple ValueChanged event hits. This will help us make sure we are investigating the correct scenario and possibly provide a solution of any related issues.

Looking forward to your response.

Regards,
Vladi
Telerik