You can do:
date = date.Date;
but if you display it, it will still give you a DateTime with the timestamp reset 12:00 AM.
If you want to just display the date part of a DateTime in a grid for example, you can use the use ToString() formatting.
date.ToString("d")
date.ToString("D")
Which will return:
7/18/2013
Thursday, July 18, 2013
Note: Doing ToShortDateString() and ToLongDateString() will give you the same thing respectively