show selected row from comboobox in gridview

http://stackoverflow.com/questions/10683366/set-display-text-of-combobox-in-datagridview
http://stackoverflow.com/questions/6050924/c-sharp-datagridview-get-selected-item-in-combobox-columns
http://stackoverflow.com/questions/14050461/combo-box-in-datagridview