Exam_Irina_V3/Exam19/MainWindow.xaml

<Window x:Class="Exam19.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:Exam19"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="75"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="30"/>
        </Grid.RowDefinitions>
        <Grid Grid.Row="0" Background="#fde2e4"></Grid>
        <Grid Grid.Row="2" Background="#fde2e4"></Grid>
        <TextBlock Text="{Binding ElementName=FrameMain, Path=Content.Title}"></TextBlock>
        <TextBlock Height="50" HorizontalAlignment="Center" FontSize="30" Text="Зарплата"></TextBlock>
        <Frame x:Name="FrameMain" NavigationUIVisibility="Hidden" Grid.Row="1"></Frame>
        <Button Content="Назад" HorizontalAlignment="Right" Name="BtnBack" Click="BtnBack_Click" Margin="643,22,0,21" 
                Width="147" Height="NaN" Background="#b8c0ff" FontSize="20"></Button>
    </Grid>
</Window>