bootstrap validation with update panel

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ASP.NET

There is so many answers on this question-"How to use bootstrap validation in asp update panel?".But no answer is helpful.

I have 3 textboxes out side update panel and a button in updatepanel.There are validations in the textboxes.
When I input wrong data and leave any box,the error is shown.When I click on the button I am redirected to the textbox which has error with error message.Everything is ok.But problem is,the code of the button is fired.It can not be prevented.