jellyfin/MediaBrowser.UI/ImageViewerWindow.xaml

<controls:BaseModalWindow x:Class="MediaBrowser.UI.ImageViewerWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                          xmlns:controls="clr-namespace:MediaBrowser.UI.Controls;assembly=MediaBrowser.UI.Controls"
                          Title="ImageViewerWindow" Height="300" Width="300">
    <Grid>
        <Image x:Name="Image" Stretch="Uniform"></Image>
    </Grid>
</controls:BaseModalWindow>