PDFOffice_Windows_exe/PDF Office/Views/Dialog/CompressWindow.xaml

<UserControl x:Class="PDF_Office.Views.Dialog.CompressDialog"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:prism="http://prismlibrary.com/"             
             prism:ViewModelLocator.AutoWireViewModel="True">
    <Grid>
        <TextBlock Text="Hello"></TextBlock>
    </Grid>
</UserControl>