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"
             mc:Ignorable="d" >
    <Grid >
        <scanviewcontrol:CustomPanel/>
    </Grid>
</UserControl>