How do you span columns in C#? In silverlight, suppose you have a grid, and this grid is in 3 columns. and you want to add a UserControl to this grid but you want it to span all three columns. How would that C# code look like? Grid1.Children.Add(UserControl01); But then what? Grid1.Children.ElementAt(1).SetValue(Grid.SetRowSpan, 2); ??