How to handle Master Page Button Click Events in the Content Page?

I have master page in ASP.NET.

I have added two asp controls to master page i.e. _EmpDROPDOWN and _findBUTTON.

I have one content page. FindEmployee.aspx which shows result list of employees 开发者_Python百科(Gridview) based on the selection made in _EmpDROPDOWN when _FindBUTTON is clicked on Master Page. I dont know how to read Master Page button click evenet in Content page.

How to read master page button click event (VB.NET syntax) in Content Page ?

Page.Master Property gets the master page that determines the overall look of the page.

MasterPageType masterPage = (MasterPageType) page.Master;