DockPanel 根据停靠属性（在控件中放置的顺序）对齐控件。
注意：DockPanel是WPF框架的一部分，但不随Silverlight / WinRT / UWP一起提供。开源实现很容易找到。
<DockPanel LastChildFill="False"> <!-- This will strech along the top of the panel --> <Button DockPanel.Dock="Top" Content="Top"/> <!-- This will strech along the bottom of the panel --> <Button DockPanel.Dock="Bottom" Content="Bottom"/> <!-- This will strech along the remaining space in the left of the panel --> <Button DockPanel.Dock="Left" Content="Left"/> <!-- This will strech along the remaining space in the right of the panel --> <Button DockPanel.Dock="Right" Content="Right"/> <!-- Since LastChildFill is false, this will be placed at the panel's right, to the left of the last button--> <Button DockPanel.Dock="Right" Content="Right"/> </DockPanel>
<!-- When lastChildFill is true, the last control in the panel will fill the remaining space, no matter what Dock was set to it --> <DockPanel LastChildFill="True"> <!-- This will strech along the top of the panel --> <Button DockPanel.Dock="Top" Content="Top"/> <!-- This will strech along the bottom of the panel --> <Button DockPanel.Dock="Bottom" Content="Bottom"/> <!-- This will strech along the remaining space in the left of the panel --> <Button DockPanel.Dock="Left" Content="Left"/> <!-- This will strech along the remaining space in the right of the panel --> <Button DockPanel.Dock="Right" Content="Right"/> <!-- Since LastChildFill is true, this will fill the remaining space--> <Button DockPanel.Dock="Right" Content="Fill"/> </DockPanel>