title: WPF Trigger when Property and Data value are true
body: <p>I need to be able to change the <code>Style</code> of a control when a property and data value are true. For example, my bound data has an <code>IsDirty</code> property. I would like to change the background color of my control when <code>IsDirty</code> is true AND the control is selected. I found the <code>MultiTrigger</code> and <code>MultiDataTrigger</code> classes...but in this case I need to somehow trigger on data and property. How can I do this?</p>
  
  <p>Another note: I need to be able to do this in code behind not XAML.</p>