With regard to:
"For example :
radnumerictextbox RTBA with option NumberFormat-DecimalDigits="2"
RTBA.value = "5.897867"
if i focus on RTBA and leave it without changing value, the "ontextchanged" is anyway fired."
I am afraid that this is a limitation of the control that is observed on initial load only. The only available workaround currently is to set NumberFormat-KeepNotRoundedValue="true"
of your RadNuemricTextBox.
"I still have trouble when i press enter on my textbox after chage value. The event "ontextchanged" is fired two times"
Indeed the reported behavior is observed for RadNumericTextBox even when the controls are outside of a grid. The strange thing is that although it looks like the event is fired twice, the value of the text box is changed only once. Anyway, I have forwarded your report to our developers for further investigation. Unfortunately, I can not provide you with exact estimate about when the problem will/can be fixed. However, you can follow the status of the issue
in our public issue tracking system.
the Telerik team