How to set the coloumn width in wpf usercontrol using C1 flexgrid

·                 public MainWindow()

·                 {

·                     InitializeComponent();

·          

·                     // create grid, add to page

·                     var flex = new C1.WPF.FlexGrid.C1FlexGrid();

·                     this.LayoutRoot.Children.Add(flex); 

·          

·                     // bind to some data 

·                     flex.AutoGenerateColumns = false;

·                     flex.ItemsSource = Product.GetProducts(200);

·          

·                     // create the columns

·                     foreach (string property in "Line,Color,Name,Price,Weight".Split(','))

·                     {

·                         var col = new C1.WPF.FlexGrid.Column();

·                         col.Header = property;

·                         col.Binding = new Binding(property);

·                         flex.Columns.Add(col);

·                     }

·                 }

·