WP7 如何使用上下文菜单

在Android开发中，上下文菜单被大量使用到，而WP7中则更重视Application Bar的使用。在Sliver light toolkit的提供的ContextMenu，简单来说，当用户Tap并Hold住一个对象时候，Context菜单就会出现，例如在Application List中，按下/holde某个应用的图标，会提示Unpin或者Uninstall等。

在使用方面，应用DLL. C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v7.0\Toolkit\Nov10\Bin\Microsoft.Phone.Controls.Toolkit.dll.在XAML页面中，添加Namesapce,   xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"

将ContextMenu的xAML内容嵌套在具体的Item申明内：

<ITEM....>

< toolkit:ContextMenuService.ContextMenu >
   < toolkit:ContextMenu >
       < toolkit:MenuItem Header = "Item1" />
       < toolkit:MenuItem Header = "Item2" />
       < toolkit:MenuItem Header = "Item3" />
       < toolkit:MenuItem Header = "Item4" />
       < toolkit:MenuItem Header = "Item5" />
   </ toolkit:ContextMenu >
</ toolkit:ContextMenuService.ContextMenu ></ITEM...>

<toolkit:ContextMenu   x:Name="databoundMenu">  
                        <toolkit:ContextMenu.ItemContainerStyle>  
                            <Style TargetType="toolkit:MenuItem">  
                              <Setter Property="Background" Value="YellowGreen" />  
                              <Setter Property="Margin" Value="5" />  
                            </Style>  
                        </toolkit:ContextMenu.ItemContainerStyle>  
                    </toolkit:ContextMenu>

通过Style 控制ContextMenu item的布局：

<toolkit:ContextMenu.ItemContainerStyle>

               < Style TargetType = "toolkit:MenuItem" >
                 < Setter Property = "Background" Value = "YellowGreen" />
                 < Setter Property = "Margin" Value = "5" />
               </ Style >
           </ toolkit:ContextMenu.ItemContainerStyle >
也可以动态绑定Item内容：

List< string > menuItems = new List< string >() { "Menu item 1" , "Menu item 2" , "Menu item 3" };
this .databoundMenu.ItemsSource = menuItems;

 

原文参考以及Sample下载： http://www.windowsphonegeek.com/articles/WP7-ContextMenu-in-depth--Part1-key-concepts-and-API