How do I right-align the 'help' menu item in WPF?

Question

I have the following (simplifed) section in my XAML file:

<Menu Width="Auto" Height="20" Background="#FFA9D1F4" DockPanel.Dock="Top">     <MenuItem Header="File">         <MenuItem Header="Exit"/>     </MenuItem>     <MenuItem Header="Edit">         <MenuItem Header="Cut"/>     </MenuItem>     <MenuItem Header="Help">         <MenuItem Header="About"/>     </MenuItem> </Menu> 

and it results in:

+-------------------------------------------+ | File Edit Help                            | +-------------------------------------------+ |                                           | 

What do I need to do if I want the Help menu item on the right-hand side:

+-------------------------------------------+ | File Edit                            Help | +-------------------------------------------+ |                                           | 

Answer 1

Another possible answer, if you always know how many menu items there will be (and that makes this answer fragile), is to define the Menu.ItemsPanel as a grid, set the Menu to Stretch, set the Grid.ColumnDefinitions appropriately, set the MenuItems to the appropriate Grid.Column, and set the HorizontalAlignment of the last menu item as Right.

   <Menu  Height="20" Background="#FFA9D1F4" DockPanel.Dock="Top" HorizontalAlignment="Stretch">         <Menu.ItemsPanel>             <ItemsPanelTemplate>                 <Grid>                     <Grid.ColumnDefinitions>                         <ColumnDefinition Width="Auto" />                         <ColumnDefinition Width="Auto" />                         <ColumnDefinition Width="*" />                     </Grid.ColumnDefinitions>                 </Grid>             </ItemsPanelTemplate>         </Menu.ItemsPanel>         <MenuItem Header="File" Grid.Column="0">             <MenuItem Header="Exit"/>         </MenuItem>         <MenuItem Header="Edit" Grid.Column="1">             <MenuItem Header="Cut"/>         </MenuItem>         <MenuItem Header="Help" Grid.Column="2" HorizontalAlignment="Right">             <MenuItem Header="About"/>         </MenuItem>     </Menu> 

Answer 2

Alng the same principle and this time you dont need the grid and therefore dont need to know the number of items. Assign all items to the left except the help :)

<Menu Height="20" Background="#FFA9D1F4">     <Menu.ItemsPanel>         <ItemsPanelTemplate>             <DockPanel HorizontalAlignment="Stretch"/>         </ItemsPanelTemplate>     </Menu.ItemsPanel>     <MenuItem Header="File">         <MenuItem Header="Exit"/>     </MenuItem>     <MenuItem Header="Edit">         <MenuItem Header="Cut"/>     </MenuItem>     <MenuItem Header="Help" HorizontalAlignment="Right">         <MenuItem Header="About"/>     </MenuItem> </Menu>