Test_Ex/EX/MainWindow.xaml

<Window x:Class="EX.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:EX"
        mc:Ignorable="d"
        Title="Приятный шелест" Height="450" Width="800"
        Icon="Resources/Приятный шелест.ico">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <ListBox>
            
        </ListBox>
    </Grid>
</Window>