ok i have a record grid with different records
plus i have a dropdown as column as well (which ought to go and just save the value i have selected and come back on
I would use jquery to bind to the dropdown's change event, and then post the value to your controller action. You can assign a class to the dropdown to make it easy to select with jquery.
<%= Html.DropDownList("SelectedItem", JobHelper.GetSelectStatus(item.int_JobFormMain) as IEnumerable, new { @class = "SelectedItemDropDown" })%>