<Window x:Class="WPF_2_CodeBehind.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"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <TextBlock Name="TbHellBlock" Text="HelloWorld" FontSize="50" HorizontalAlignment="Center"
                   VerticalAlignment="Center" />

        <Button Name="ButtonToggleRun" Width="100" Height="50" VerticalAlignment="Center" HorizontalAlignment="Center"
                Content="Run" Click="ButtonToggleRun_OnClick" />
    </Grid>
</Window>