我在 Silverlight 应用程序中使用 NumericUpDown 控件。我在使用选项卡浏览 Silverlight 页面中的控件时遇到问题。
案例 1：当我的控件焦点位于 NumericUpDown 并且我使用向上向下键时，我在 NumericUpDown 控件中的值递增和递减。并且当按 tab 焦点移动到下一个控件时，谁的 tabindex 是 +1
案例 2：当我单击 NumericUpDown 控件时，我的 NumericUpDownControl 自从我单击它后获得焦点，当我通过键盘在其中输入值并按下选项卡 id 时不会移动到下一个控件。（因为它在第一种情况下移动）
我发现当我单击 NumericUpDown 控件，然后在案例 2 中按 Tab 键时：在控件的按键按下事件中，我将原始源作为 TextBox。
** private void Control_KeyDown(object sender, KeyEventArgs e)
{
if (e.OriginalSource as Control != null
&& e.Key == Key.Tab)
{
Int32 index = (e.OriginalSource as Control).TabIndex;
if (index == Int32.MaxValue) index = index1; //??//
if (Keyboard.Modifiers == ModifierKeys.None)
{
}
else if (Keyboard.Modifiers == ModifierKeys.Shift)
{
}
}
}
**
案例 1：我将 NumericUpDown 控件作为原始源 在案例 2：我将 TextBox 控件作为原始源
我在哪里设置了 NumericUpDown 控件的 TabIndex，并且由于我没有获得 TextBox 的 TabIndex 属性，所以我遇到了上述问题。
那么如何在 NumericUpDown 控件的 TextBox 上设置 TabIndex。？？
控制模板
`
<VisualStateGroup x:Name="ValidationStates">
<VisualState x:Name="Valid"/>
<VisualState x:Name="InvalidUnfocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ValidationErrorElement" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="InvalidFocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ValidationErrorElement" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="validationTooltip" Storyboard.TargetProperty="IsOpen">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<sys:Boolean>True</sys:Boolean>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<inputToolkit:ButtonSpinner x:Name="Spinner" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" MinWidth="35">
<StackPanel Background="White" Orientation="Horizontal" HorizontalAlignment="Right" Width="Auto">
<TextBox x:Name="Text" Style="{StaticResource TextBoxStyle}"
BorderThickness="0" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="{TemplateBinding Foreground}" MinWidth="50" Width="Auto" AcceptsReturn="False" Text="{TemplateBinding Value}" TextAlignment="Left" TextWrapping="NoWrap"/>
</StackPanel>
</inputToolkit:ButtonSpinner>
<Border x:Name="DisabledVisualElement" IsHitTestVisible="false" Opacity="0" Background="#A5FFFFFF" CornerRadius="2.5,2.5,2.5,2.5"/>
<Border x:Name="FocusVisualElement" IsHitTestVisible="False" Opacity="0" BorderBrush="#FF45D6FA" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1,1,1,1"/>
<Border x:Name="ValidationErrorElement" Visibility="Collapsed" BorderBrush="#FFDB000C" BorderThickness="1" CornerRadius="1">
<ToolTipService.ToolTip>
<ToolTip x:Name="validationTooltip" Height="Auto" Width="Auto" Template="{StaticResource ValidationToolTipTemplate}" DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}" Placement="Right" PlacementTarget="{Binding RelativeSource={RelativeSource TemplatedParent}}">
<ToolTip.Triggers>
<EventTrigger RoutedEvent="Canvas.Loaded">
<BeginStoryboard>
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="validationTooltip" Storyboard.TargetProperty="IsHitTestVisible">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<sys:Boolean>true</sys:Boolean>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ToolTip.Triggers>
</ToolTip>
</ToolTipService.ToolTip>
<Grid Height="12" HorizontalAlignment="Right" Margin="1,-4,-4,0" VerticalAlignment="Top" Width="12" Background="Transparent">
<Path Fill="#FFDC000C" Margin="1,3,0,0" Data="M 1,0 L6,0 A 2,2 90 0 1 8,2 L8,7 z"/>
<Path Fill="#ffffff" Margin="1,3,0,0" Data="M 0,0 L2,0 L 8,6 L8,8"/>
</Grid>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>`
**我想<inputToolkit:ButtonSpinner></inputToolkit:ButtonSpinner>在运行时从 Text 的 TabIndex 属性设置 TextBox。
我该怎么做呢。？**