如何讓唯一的 DockPanel 子元素停靠在頂部 (How to get sole DockPanel child element to dock on the top)

問題描述

如何讓唯一的 DockPanel 子元素停靠在頂部 (How to get sole DockPanel child element to dock on the top)

下面我在菜單上說“DockPanel.Top”，但它停靠在中間。(?)

如果我將 Height 屬性從 Menu 中取出，它會停靠在頂部，但高度約為 200 像素。(?)

我認為這就是 LastChildFill 的用途。

我怎樣才能讓這個 DockPanel 的子元素停靠在頂部而沒有其他停靠面板中的項目？

<Window x:Class="TestContainer1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="480" Width="600" Loaded="Window_Loaded">

    <DockPanel HorizontalAlignment="Stretch" 
               Margin="0,0,0,0" 
               Width="Auto" 
               LastChildFill="True">

        <Menu x:Name="panelMenuTop" 
              Width="Auto" 
              Height="25" 
              DockPanel.Dock="Top">

            <MenuItem Header="File">
                <MenuItem Header="Close" 
                          Click="CloseApplication_Click"/>
            </MenuItem>
        </Menu>

    </DockPanel>
</Window>

Your menu is filling up the entire area so it appears centered. You can just give the Menu a VerticalAlignment="Top" or give the DockPanel some more children as Henk said.

(by Edward Tanguay、Bryan Anderson)

參考文件

1. How to get sole DockPanel child element to dock on the top (CC BY‑SA 3.0/4.0)