Loading an arrayList into a datagrid

[Twyce]

How can i load data from a comboBox into a datagrid.Basically the comboBox has a list of venues.When you select a venue the datagrid is supposed to display timeslots that are booked and those that are not booked for that particular venue.the data for the grid is taken from three different tables.(TimeSlot[with all the different timeslots]),(Venue[with all the different venues ])and (Timetable[with all the venues that are booked and the timeslots that they are booked for]). Any code that will hep me with this problem will be greatly appreciated.