Friends
cud u tell me the best practice to achieve my requirement..
my Req. is..
I have a list with a my custom drop down control that having some users name (i get them by some custom logic),
when Item is being created I want this item to be accessed by only users
1) who is Created by
2) and those are being selected by this Dropdown.
You could use a workflow with an impersonation step. First remove unwanted permissions and then grant permissions based on your dropdown column. I have done this before on a task list to only grant access to the person/people in the assigned to column.