ProbnikDemoEkz/ProbnikDemo/MainWindow.xaml

<Window x:Class="ProbnikDemo.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:ProbnikDemo"
        mc:Ignorable="d"
        Title="Приятный шелест" Height="1000" Width="1300"
        Icon="res/Приятный шелест.ico">
    
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="100*"/>
            <RowDefinition Height="319*"/>
        </Grid.RowDefinitions>
        <Image Source="res/Приятный шелест.png" HorizontalAlignment="Left"></Image>
        <TextBlock Text="Приятный шелест" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="40"></TextBlock>
        <Frame x:Name="MainFrame" NavigationUIVisibility="Hidden" Grid.Row="1"></Frame>
    </Grid>
</Window>