title: How do I make XAML DataGridColumns fill the entire DataGrid?
body: <p>I am using DataGrids in XAML (not Silverlight) with resizable columns, the DataGrid will expand if the user resizes the screen.</p>
  
  <p>Currently if the widths of all the DataGrid columns are less than the width of the DataGrid I get an extra "column" appearing which is unclickable and serves no purpose.</p>
  
  <p>Does anyone know how to make one column always resize to fill all the remaining space?</p>