title: Date as folder name
body: <p>Fast one, why this code isnt working for me:</p>
  
  <pre><code>Directory.CreateDirectory(DateTime.ToString("dd-MM-yyyy"));
  </code></pre>
  
  <p>Erorr:</p>
  
  <pre><code>Error   1   An object reference is required for the non-static field, method, or property 'System.DateTime.ToString(string)'    Documents\Visual Studio 2008\Projects\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs    83  39  WindowsFormsApplication1
  </code></pre>
  
  <p>What is wrong? And if I would like to have folders name as "This is folder of" and then add todays date, how should it look?</p>