ClearTest/WpfApp1/pgHotels.xaml

<Page x:Class="WpfApp1.pgHotels"
      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:WpfApp1"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="pgHotels">

    <Grid>
        <ScrollViewer HorizontalScrollBarVisibility="Auto">
            <StackPanel>
                <DataGrid Name="dgHotels" AutoGenerateColumns="False">
                    <DataGrid.Columns>
                        <DataGridTextColumn Binding="{Binding Name}"></DataGridTextColumn>
                        <DataGridTextColumn Binding="{Binding CountOfStars}"></DataGridTextColumn>
                        <DataGridTextColumn Binding="{Binding Country.Name}"></DataGridTextColumn>
                    </DataGrid.Columns>
                </DataGrid>
            </StackPanel>
        </ScrollViewer>
        
       
    </Grid>
</Page>