Jesi523 0 Junior Poster in Training

I have a detailsview where some items are bound to a database and other items are not. I have two textboxes with a calendar on each. One lets the user pick the start date and the other lets the user pick the end date. I also have to dropdown boxes, one that allows the user to select a start time and one that lets the user select an end time. I need to know how to combine the start date textbox and start date time dropdown list into one field to insert it into the database and do the same with the end date and end time fields. I am having a very difficult time figuring this out. I know I need to get the the information from the text box and the dropdown, combine them, change them to datetime format and then insert into the database but how???

Thank you,
Jess