How to add or append multiple entries in the list control?

Hi all,

Scenario

i have an split app control.when i enter any order no in the input field in the master page the get_entity method needs to be called and the details fetched should be be displayed in the list below

After entering the first order no i will be entering another order no in the input field and get_entity for the respective new order has to be fetched again and displayed along with previous order details . the new details fetched should be appended in the list along with previous entry and this should have as many times as possible .

Question:

• How to add or insert the new data fetched to the master list control as many times as possible.
• Once all the orders are displayed in the list control is it possible to access all the consolidated data of the list control ? does any object of list control hold the consolidated values..Later with the consolidated values i want to perform an deep entity create.

Thanks

Ignaatious