Specifies the position of a child element that is inside a DockPanel.
Assembly: PresentationFramework (in PresentationFramework.dll)
If you set the LastChildFill property to true, which is the default setting, the last child element of a DockPanel always fills the remaining space, regardless of any other dock value that you set on the last child element. To dock a child in another direction, you must set the LastChildFill property to false and must also set an explicit dock direction on the last child element.
The following example creates and uses an instance of DockPanel by using code. The example shows you how to partition space by creating five Rectangle elements and positioning (docking) them inside a parent DockPanel. If you retain the default setting, the final rectangle fills all the remaining unallocated space.
WindowTitle = "DockPanel Sample" 'Create a DockPanel as the root Panel Dim myDP As New DockPanel() ' Add the first Rectangle to the DockPanel Dim rect1 As New Rectangle rect1.Stroke = Brushes.Black rect1.Fill = Brushes.SkyBlue rect1.Height = 25 DockPanel.SetDock(rect1, Dock.Top) myDP.Children.Add(rect1) ' Add the second Rectangle to the DockPanel Dim rect2 As New Rectangle rect2.Stroke = Brushes.Black rect2.Fill = Brushes.SkyBlue rect2.Height = 25 DockPanel.SetDock(rect2, Dock.Top) myDP.Children.Add(rect2) ' Add the third Rectangle to the DockPanel Dim rect3 As New Rectangle rect3.Stroke = Brushes.Black rect3.Fill = Brushes.Khaki rect3.Height = 25 DockPanel.SetDock(rect3, Dock.Bottom) myDP.Children.Add(rect3) ' Add the fourth Rectangle to the DockPanel Dim rect4 As New Rectangle rect4.Stroke = Brushes.Black rect4.Fill = Brushes.PaleGreen rect4.Width = 200 rect4.VerticalAlignment = VerticalAlignment.Stretch DockPanel.SetDock(rect4, Dock.Left) myDP.Children.Add(rect4) ' Add the fourth Rectangle to the DockPanel Dim rect5 As New Rectangle rect5.Stroke = Brushes.Black rect5.Fill = Brushes.White myDP.Children.Add(rect5) Me.Content = myDP