Could you please kindly enclose the structure of your page as attachment so that we can use it to observe the scenario.
Look forward for your reply.

I havee a main page (desktop.aspx) has the webdesktop control

this page has children icons

every icon open a page

one page (Users.aspx) has a button

I need when I click in a button (search) on the user page to set content (redirect) to a another page 

Hi Hamdy,

I have attached a simple sample of your wanted scenario.

Please kindly check it, hope it can help you.

I'm using a client side on my sample.

Best regards,

Niven Prasetya

Thanx it  is working great

but how can i make it in server side 

like response. redirect

Hi Hamdy,

I'm very sorry.

I'm afraid the best possible way to do is only from client side.

On server side, once you click to other page there will be a fullpostback for the desktop manager, so you will not get the state where you wanted to be instead it will load to the default display of your first run desktop manager.

Hope this can clear your issue.

Best regards,

Niven Prasetya