title: WPF Property Data binding to negate the property
body: <p>Is there any way to change the value of property at runtime in WPF data binding. Let's say my TextBox is bind to a IsAdmin property. Is there anyway I can change that property value in XAML to be !IsAdmin.</p>
  
  <p>I just want to negate the property so Valueconverter might be an overkill!</p>
  
  <p>NOTE: Without using ValueConverter</p>