title: ICommand method execute parameter value
body: <p>I try to understand the ICommand from wpf.</p>
  
  <p>In my Event class I implement the ICommand and their methods.</p>
  
  <p>one method is the Execute:</p>
  
  <pre><code>public void Execute(object parameter)
  {
      //Do something
  }
  </code></pre>
  
  <p>now is my question: what value contains the  parameter <code>parameter</code> from <code>Execute</code>?</p>