PDFOffice_Windows_exe/PDF Office/Views/PropertyPanel/PropertyPanelContent.xaml

<UserControl x:Class="PDF_Office.Views.PropertyPanel.PropertyPanelContent"
             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:PDF_Office.Views.PropertyPanel"
             xmlns:AnnotPanel="clr-namespace:PDF_Office.Views.PropertyPanel.AnnotPanel"
              xmlns:Convert="clr-namespace:PDF_Office.DataConvert"
             xmlns:prism="http://prismlibrary.com/"             
             prism:ViewModelLocator.AutoWireViewModel="True"
             xmlns:PropertyPanel="clr-namespace:PDF_Office.ViewModels.PropertyPanel"
             d:DataContext="{d:DesignInstance Type=PropertyPanel:PropertyPanelContentViewModel}"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <UserControl.Resources>
        <Convert:PropertyPanelVisible x:Key="PropertyPanelVisible"/>
    </UserControl.Resources>
    <Grid  VerticalAlignment="Stretch">
 
        <Grid>
            <TextBlock Text="空" FontSize="30" HorizontalAlignment="Center" VerticalAlignment="Center"/>
        </Grid>
     
    </Grid>
</UserControl>