This sample shows how you can use XAML-style star sizing to implement flexible layouts with the FlexGrid. Star sizing is specified in the width property of the Column object. Star sizing is similar to percentage sizing, except that the values do not have to add up to one hundred. A width of '3' means 'three times wider than 1.' The total size used to calculate the layout is the current width of the control minus the width of any non-star columns divided by the number of stars specified.