Refreshing UIelements using Tab

Hi Experts,

I am having four tabs in one page . And each tab is having some uielements placed in ViewContainerUielement.I want to refresh those uielements while clicking different tabs in the same page.

Example:

Tab1 having label and dropdown.

Tab2 having label and dropdown.

After selecting dropdown in Tab1 and clicking to tab2.If i want to return to Tab1 the values are not refreshing.

Please help...

Regards

Nutan