A using namespace directive can only be applied to namespaces

.net, c#, datetime

Solution

using System; 

DateTime returnedDate = DateTime.Now();

Problem

``` using System.Text.RegularExpressions; using System.DateTime; DateTime returnedDate = DateTime.Now(); ``` it give me error : ``` A using namespace directive can only be applied to namespaces; 'System.DateTime' is a type not a namespace (line 1, pos 1) ``` where is my mistake?

Original source