java - show a view part from another using a button -

i want open viewpart button in viewpart of button.. using eclipse rcp , rcp viewparts.

my code:

button btnpush = new button(container, swt.none); btnpush.addselectionlistener(new selectionadapter() {     @override     public void widgetselected(selectionevent e) {         // want display view here      } }); 

get workbench page. in view part can use

iworkbenchpage page = getsite().getpage(); 

elsewhere use:

iworkbenchpage page = platformui.getworkbench().getactiveworkbenchwindow().getactivepage(); 

show , activate view:

page.showview("view id");