WPF中,如何从Toolbar中跳出Tab循环

                                        WPF中,如何从Toolbar中跳出Tab循环
                                                                                         周银辉

WPF中. 在Toolbar中连续使用Tab键时,其会循环与其中.你可以运行以下代码并发现该问题:

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:sys="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >

 <DockPanel>
   <ToolBar DockPanel.Dock="Top" >
           
    <Button Content="B" 
            Command="EditingCommands.ToggleBold" />
    <Button Content="U" 
            Command="EditingCommands.ToggleUnderline" />
    <Button Content="I" 
            Command="EditingCommands.ToggleItalic" />
   </ToolBar>
   <RichTextBox />
 </DockPanel> 

</Window>

如何跳出该循环呢, 很简单, 将TabBar的TabNavigation属性设置为Continue就可以了 : )
运行以下代码你会发现, Tab键焦点可以从按钮"I"跳转到RichTextBox

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:sys="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >

 <DockPanel>
   <ToolBar DockPanel.Dock="Top" 
           KeyboardNavigation.TabNavigation="Continue">
    <Button Content="B" 
            Command="EditingCommands.ToggleBold" />
    <Button Content="U" 
            Command="EditingCommands.ToggleUnderline" />
    <Button Content="I" 
            Command="EditingCommands.ToggleItalic" />
   </ToolBar>
   <RichTextBox />
 </DockPanel> 

</Window>