I have a very simple form with a single datagrid on it.  The datagrid is a basic drag and drop auto datagrid based on a table in a sql express database.  The table has 3 fields, ID,  List, and value.  ID is a standard autonumber, List and Value are strings.  I also placed an unbound combo box setup and a DrowDownList.  I set the list of items in the combo box as design time.  The datagrid I hide the ID and List columns.  The basic idea is I want the user to be able to select the list from the combo box and enter the values for the selected list.  I set up the datagrid to use a parameritised query that uses the selecteditem from my combo box.  That works fine the problem I have is adding new rows.  I want the list field to be set to the selected item in the combo box but have no idea on how to do it.  I'm guessing I should be able to bind one of the properties in the combo box to the datasource field but don't know which one.