eg.1...string sql="select * from A where time>=:begin_time and time<=:end_time";
DateTime bt = new DateTime(2013, 04, 19);
DateTime et = new DateTime(2013, 04, 20, 15, 0, 0);
conn.Query<Object>(sql,new {begin_time=bt,end_time=et}).ToList()
...the query i...