List Box Widget WITH MULTI SELECT

List Box Widget WITH MULTI SELECT

  
I have created a web page with  list box with multi select and a button.
I have bind list box with a stucture with 3 fields: id,name,is_active.
At the prepration i have assinged source to widget.
But I am unable to get selected or any item on button click event. Listbox.list showing null values in list records.

I am stuck here..Please any one help me for the same.


Thanks in advance