<ItemsControl x:Class="HDSProject.Control.CustomFont" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:HDSProject.Control" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800" x:Name="itemCtrl" ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}" FontSize="20" Foreground="Teal" > <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal"/> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}"> <TextBlock Text="{Binding}" /> <Border.Style> <Style TargetType="Border"> <Setter Property="BorderThickness" Value="0"/> <Style.Triggers> <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True"> <Setter Property="BorderThickness" Value="0 0 0 1"/> </DataTrigger> </Style.Triggers> </Style> </Border.Style> <Border.BorderBrush> <SolidColorBrush Color="{Binding Foreground.Color, ElementName=itemCtrl}" /> </Border.BorderBrush> </Border> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl>我希望Title2中如果带回车，显示的文字可以跟着分成多行展示，且行与行之间的间距可以设置

要实现Title2中带回车的多行展示，可以使用TextBlock来代替Border，并将TextBlock的Text属性设置为绑定的值，并将其TextWrapping属性设置为Wrap，如下所示：

<TextBlock Text="{Binding}" TextWrapping="Wrap" />

此外，要设置行与行之间的间距，可以将TextBlock的Margin属性设置为一个带有Top或Bottom值的Thickness，例如：

<TextBlock Text="{Binding}" TextWrapping="Wrap" Margin="0 5 0 5" />

这会在每一行的顶部和底部添加5个像素的间距。最终修改后的代码如下所示：

<ItemsControl x:Class="HDSProject.Control.CustomFont"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:local="clr-namespace:HDSProject.Control"
              mc:Ignorable="d"
              d:DesignHeight="450" d:DesignWidth="800"
              x:Name="itemCtrl"
              ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}"
              FontSize="20"
              Foreground="Teal"
              >
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel Orientation="Horizontal"/>
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}">
                <TextBlock Text="{Binding}" TextWrapping="Wrap" Margin="0 5 0 5" />
                <Border.Style>
                    <Style TargetType="Border">
                        <Setter Property="BorderThickness" Value="0"/>
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True">
                                <Setter Property="BorderThickness" Value="0 0 0 1"/>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </Border.Style>
                <Border.BorderBrush>
                    <SolidColorBrush Color="{Binding Foreground.Color, ElementName=itemCtrl}" />
                </Border.BorderBrush>
            </Border>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>