在UWP文本框中垂直居中文本和光標

Question

如何在UWP文本框中垂直居中文本？

這是默認UWP的風格，但是這是什麼出來：

我只是希望它爲中心。

上文本框單擊右鍵，編輯模板=>創建副本：

Answer 1

它也可以通過修改TextBox風格如下進行。

在風格看看ScrollViewer x:Name="ContentElement"和ContentControl x:Name="PlaceholderTextContentPresenter"元素。添加VerticalAlignment="Center"他們兩個。

<Style x:Key="TextBoxStyle1" TargetType="TextBox"> 
    <Setter Property="MinWidth" Value="{ThemeResource TextControlThemeMinWidth}"/> 
    <Setter Property="MinHeight" Value="{ThemeResource TextControlThemeMinHeight}"/> 
    <Setter Property="Foreground" Value="{ThemeResource TextControlForeground}"/> 
    <Setter Property="Background" Value="{ThemeResource TextControlBackground}"/> 
    <Setter Property="BorderBrush" Value="{ThemeResource TextControlBorderBrush}"/> 
    <Setter Property="SelectionHighlightColor" Value="{ThemeResource TextControlSelectionHighlightColor}"/> 
    <Setter Property="BorderThickness" Value="{ThemeResource TextControlBorderThemeThickness}"/> 
    <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/> 
    <Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/> 
    <Setter Property="ScrollViewer.HorizontalScrollMode" Value="Auto"/> 
    <Setter Property="ScrollViewer.VerticalScrollMode" Value="Auto"/> 
    <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Hidden"/> 
    <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Hidden"/> 
    <Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False"/> 
    <Setter Property="Padding" Value="{ThemeResource TextControlThemePadding}"/> 
    <Setter Property="Template"> 
     <Setter.Value> 
      <ControlTemplate TargetType="TextBox"> 
       <Grid> 
        <Grid.Resources> 
         <Style x:Name="DeleteButtonStyle" TargetType="Button"> 
          <Setter Property="Template"> 
           <Setter.Value> 
            <ControlTemplate TargetType="Button"> 
             <Grid x:Name="ButtonLayoutGrid" Background="{ThemeResource TextControlButtonBackground}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{ThemeResource TextControlButtonBorderBrush}"> 
                <VisualStateManager.VisualStateGroups> 
                 <VisualStateGroup x:Name="CommonStates"> 
                  <VisualState x:Name="Normal"/> 
                  <VisualState x:Name="PointerOver"> 
                   <Storyboard> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ButtonLayoutGrid" Storyboard.TargetProperty="Background"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonBackgroundPointerOver}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ButtonLayoutGrid" Storyboard.TargetProperty="BorderBrush"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonBorderBrushPointerOver}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="GlyphElement" Storyboard.TargetProperty="Foreground"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonForegroundPointerOver}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                   </Storyboard> 
                  </VisualState> 
                  <VisualState x:Name="Pressed"> 
                   <Storyboard> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ButtonLayoutGrid" Storyboard.TargetProperty="Background"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonBackgroundPressed}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ButtonLayoutGrid" Storyboard.TargetProperty="BorderBrush"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonBorderBrushPressed}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="GlyphElement" Storyboard.TargetProperty="Foreground"> 
                     <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlButtonForegroundPressed}"/> 
                    </ObjectAnimationUsingKeyFrames> 
                   </Storyboard> 
                  </VisualState> 
                  <VisualState x:Name="Disabled"> 
                   <Storyboard> 
                    <DoubleAnimation Duration="0" Storyboard.TargetName="ButtonLayoutGrid" Storyboard.TargetProperty="Opacity" To="0"/> 
                   </Storyboard> 
                  </VisualState> 
                 </VisualStateGroup> 
                </VisualStateManager.VisualStateGroups> 
                <TextBlock x:Name="GlyphElement" AutomationProperties.AccessibilityView="Raw" FontStyle="Normal" FontFamily="{ThemeResource SymbolThemeFontFamily}" Foreground="{ThemeResource TextControlButtonForeground}" FontSize="12" HorizontalAlignment="Center" Text="&#xE10A;" VerticalAlignment="Center"/> 
               </Grid> 
            </ControlTemplate> 
           </Setter.Value> 
          </Setter> 
         </Style> 
        </Grid.Resources> 
        <Grid.ColumnDefinitions> 
           <ColumnDefinition Width="*"/> 
           <ColumnDefinition Width="Auto"/> 
          </Grid.ColumnDefinitions> 
        <Grid.RowDefinitions> 
           <RowDefinition Height="Auto"/> 
           <RowDefinition Height="*"/> 
          </Grid.RowDefinitions> 
        <VisualStateManager.VisualStateGroups> 
           <VisualStateGroup x:Name="CommonStates"> 
            <VisualState x:Name="Disabled"> 
             <Storyboard> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HeaderContentPresenter" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlHeaderForegroundDisabled}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="Background"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBackgroundDisabled}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="BorderBrush"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBorderBrushDisabled}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlForegroundDisabled}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextContentPresenter" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundDisabled}}"/> 
              </ObjectAnimationUsingKeyFrames> 
             </Storyboard> 
            </VisualState> 
            <VisualState x:Name="Normal"/> 
            <VisualState x:Name="PointerOver"> 
             <Storyboard> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="BorderBrush"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBorderBrushPointerOver}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="Background"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBackgroundPointerOver}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextContentPresenter" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundPointerOver}}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlForegroundPointerOver}"/> 
              </ObjectAnimationUsingKeyFrames> 
             </Storyboard> 
            </VisualState> 
            <VisualState x:Name="Focused"> 
             <Storyboard> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextContentPresenter" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundFocused}}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="Background"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBackgroundFocused}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderElement" Storyboard.TargetProperty="BorderBrush"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBorderBrushFocused}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement" Storyboard.TargetProperty="Foreground"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlForegroundFocused}"/> 
              </ObjectAnimationUsingKeyFrames> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentElement" Storyboard.TargetProperty="RequestedTheme"> 
               <DiscreteObjectKeyFrame KeyTime="0" Value="Light"/> 
              </ObjectAnimationUsingKeyFrames> 
             </Storyboard> 
            </VisualState> 
           </VisualStateGroup> 
           <VisualStateGroup x:Name="ButtonStates"> 
            <VisualState x:Name="ButtonVisible"> 
             <Storyboard> 
              <ObjectAnimationUsingKeyFrames Storyboard.TargetName="DeleteButton" Storyboard.TargetProperty="Visibility"> 
               <DiscreteObjectKeyFrame KeyTime="0"> 
                <DiscreteObjectKeyFrame.Value> 
                 <Visibility>Visible</Visibility> 
                </DiscreteObjectKeyFrame.Value> 
               </DiscreteObjectKeyFrame> 
              </ObjectAnimationUsingKeyFrames> 
             </Storyboard> 
            </VisualState> 
            <VisualState x:Name="ButtonCollapsed"/> 
           </VisualStateGroup> 
          </VisualStateManager.VisualStateGroups> 
        <Border x:Name="BorderElement" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Grid.ColumnSpan="2" Grid.RowSpan="1" Grid.Row="1"/> 
        <ContentPresenter x:Name="HeaderContentPresenter" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.ColumnSpan="2" FontWeight="Normal" Foreground="{ThemeResource TextControlHeaderForeground}" Margin="0,0,0,8" Grid.Row="0" TextWrapping="{TemplateBinding TextWrapping}" Visibility="Collapsed" x:DeferLoadStrategy="Lazy"/> 
        <ScrollViewer VerticalAlignment="Center" x:Name="ContentElement" AutomationProperties.AccessibilityView="Raw" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" IsTabStop="False" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" ZoomMode="Disabled"/> 
        <TextBlock VerticalAlignment="Center" x:Name="PlaceholderTextContentPresenter" Grid.ColumnSpan="2" Foreground="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForeground}}" IsHitTestVisible="False" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" Text="{TemplateBinding PlaceholderText}" TextWrapping="{TemplateBinding TextWrapping}" TextAlignment="{TemplateBinding TextAlignment}"/> 
        <Button x:Name="DeleteButton" AutomationProperties.AccessibilityView="Raw" BorderThickness="{TemplateBinding BorderThickness}" Grid.Column="1" FontSize="{TemplateBinding FontSize}" IsTabStop="False" MinWidth="34" Margin="{ThemeResource HelperButtonThemePadding}" Grid.Row="1" Style="{StaticResource DeleteButtonStyle}" VerticalAlignment="Stretch" Visibility="Collapsed"/> 
       </Grid> 
      </ControlTemplate> 
     </Setter.Value> 
    </Setter> 
</Style>