如果样式中的文本框的AcceptsReturn为True，则AutoSuggestBox的行为会有所不同

Question

我有一个简单的AutoSuggestBox，其样式通过更改其中的TextBox的几个属性进行了修改。我修改了AcceptsReturn和MinHeight

的属性

这是样式的修改部分

<Style TargetType="AutoSuggestBox">
  <!-- -->
    <TextBox x:Name="TextBox" Style="{TemplateBinding TextBoxStyle}" PlaceholderText="{TemplateBinding PlaceholderText}" Header="{TemplateBinding Header}" Width="{TemplateBinding Width}" AcceptsReturn="True" ScrollViewer.BringIntoViewOnFocusChange="False" Canvas.ZIndex="0" MinHeight="20" Margin="0" DesiredCandidateWindowAlignment="BottomEdge" UseSystemFocusVisuals="{TemplateBinding UseSystemFocusVisuals}" />

  <!-- -->
</Style>

这里是完整的示例代码

<Page
    x:Class="TestApplication.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <Page.Resources>
        <Style TargetType="AutoSuggestBox">
            <Setter Property="VerticalAlignment" Value="Top" />
            <Setter Property="IsTabStop" Value="False" />
            <Setter Property="TextBoxStyle" Value="{StaticResource AutoSuggestBoxTextBoxStyle}" />
            <Setter Property="UseSystemFocusVisuals" Value="{ThemeResource IsApplicationFocusVisualKindReveal}" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="AutoSuggestBox">
                        <Grid x:Name="LayoutRoot">
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="Orientation">
                                    <VisualState x:Name="Landscape" />
                                    <VisualState x:Name="Portrait" />
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="*" />
                            </Grid.RowDefinitions>
                            <TextBox x:Name="TextBox" Style="{TemplateBinding TextBoxStyle}" PlaceholderText="{TemplateBinding PlaceholderText}" Header="{TemplateBinding Header}" Width="{TemplateBinding Width}" AcceptsReturn="True" ScrollViewer.BringIntoViewOnFocusChange="False" Canvas.ZIndex="0" MinHeight="20" Margin="0" DesiredCandidateWindowAlignment="BottomEdge" UseSystemFocusVisuals="{TemplateBinding UseSystemFocusVisuals}" />
                            <Popup x:Name="SuggestionsPopup">
                                <Border x:Name="SuggestionsContainer">
                                    <ListView x:Name="SuggestionsList" Background="{ThemeResource AutoSuggestBoxSuggestionsListBackground}" BorderThickness="{ThemeResource AutoSuggestListBorderThemeThickness}" BorderBrush="{ThemeResource AutoSuggestBoxSuggestionsListBorderBrush}" DisplayMemberPath="{TemplateBinding DisplayMemberPath}" IsItemClickEnabled="True" ItemTemplate="{TemplateBinding ItemTemplate}" ItemTemplateSelector="{TemplateBinding ItemTemplateSelector}" ItemContainerStyle="{TemplateBinding ItemContainerStyle}" MaxHeight="{ThemeResource AutoSuggestListMaxHeight}" Margin="{ThemeResource AutoSuggestListMargin}" Padding="{ThemeResource AutoSuggestListPadding}" />
                                </Border>
                            </Popup>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Page.Resources>   
    <StackPanel>
        <AutoSuggestBox x:Name="MyAutoSuggestBox"  Margin="100" Text="{x:Bind Text, Mode=OneWay}" Width="200"/>
    </StackPanel>
</Page>

Here's Sample GiF of What happens

Answer 1

从此document开始，它提到我们通常将AcceptsReturn和TextWrapping属性设置为一个多行文本框。因此，您可以添加TextWrapping属性，如下所示。

并且如果您不想添加TextWrapping属性，则可以在Page.Loaded事件中将值设置为Text。当AutoSuggestBox加载并分配给Text属性后，它将很好地工作。

<Style TargetType="AutoSuggestBox">
  <!-- -->
    <TextBox x:Name="TextBox" TextWrapping="Wrap" Style="{TemplateBinding TextBoxStyle}" PlaceholderText="{TemplateBinding PlaceholderText}" Header="{TemplateBinding Header}" Width="{TemplateBinding Width}" AcceptsReturn="True" MinHeight="20" ScrollViewer.BringIntoViewOnFocusChange="False" Canvas.ZIndex="0" Margin="0" DesiredCandidateWindowAlignment="BottomEdge" UseSystemFocusVisuals="{TemplateBinding UseSystemFocusVisuals}" />

  <!-- -->
</Style>