PDFOffice_Windows_exe/PDF Office/Views/Scan/ScanViwer.xaml

<UserControl x:Class="PDF_Office.Views.Scan.ScanViwer"
             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.Scan" xmlns:scanviewcontrol="clr-namespace:PDF_Office.CustomControl.ScanViewControl" xmlns:scan="clr-namespace:PDF_Office.ViewModels.Scan" d:DataContext="{d:DesignInstance Type=scan:ScanViwerViewModel}"
             mc:Ignorable="d"
             >

    <Grid PreviewMouseWheel="Grid_MouseWheel" HorizontalAlignment="Stretch"  VerticalAlignment="Stretch" Background="LightGray">
        <ScrollViewer HorizontalScrollBarVisibility="Auto" HorizontalAlignment="Stretch"  VerticalAlignment="Stretch" VerticalScrollBarVisibility="Auto" HorizontalContentAlignment="Center" VerticalContentAlignment="Center">
            <Grid x:Name="ImageGrid" HorizontalAlignment="Center"  VerticalAlignment="Center" Width="500" Height="500">
                <scanviewcontrol:CustomPanel BGImage="{Binding BgImage}" OCRTextRectList="{Binding TextRectList}"/>
            </Grid>
        </ScrollViewer>
    </Grid>
</UserControl>