title: this.EdgesForExtendedLayout = UIRectEdge.None is giving compile time error on ios6
body: <p>I am using below code for adjusting frame for ios7</p>
  
  <pre><code>if(!AppDelegate.IsIOS6orBelow)
      this.EdgesForExtendedLayout = UIRectEdge.None;
  </code></pre>
  
  <p>but it is giving compile time error in ios6,I know it is new property in ios7 but what's the solution for ios6?(Other developer is working on old version of xcode)</p>