c# DateTime, Trim without converting to string

Example1 
var dt = DateTime.Now;    // 10/1/2010 10:44:24 AM
var dateOnly = dt.Date;   // 10/1/2010 12:00:00 AM

Example2
DateTime now = DateTime.Now;
DateTime today = now.Date;

Example3
DateTime now = DateTime.Now;
DateTime today = new DateTime(now.Year, now.Month, now.Day);