copy data from combobox to textbox

Question

Hi , I have a simple Combobox with an array of vehicles and I also have a textbox on the form When i click onto the textboc the combobox appears I then would like to select a value from the drop down choices to the combobox and that works fine but when i try to copy the data across to the textbox for insertion into the Database but there is no data copied? any clues thanks kamean