MainWindow.xaml

<Window x:Class="ChristmasClockController.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:ChristmasClockController"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid DataContext="{StaticResource MockViewModel}">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <StackPanel Grid.Column="0" Grid.Row="1">
            <Button Content="Scan" Command="{Binding GetAvailableComPorts}" />
            <ListBox ItemsSource="{Binding ComPorts}" SelectedItem="{Binding ComPort}"></ListBox>
            <Button Visibility="{Binding Disconnected}" Content="Connect" Command="{Binding Connect}" />
            <Button Visibility="{Binding Connected}" Content="Disconnect" Command="{Binding Disconnect}" />
            <Button Visibility="{Binding ComPortSelected}" Content="BootMode" Command="{Binding BootMode}" />
        </StackPanel>
        <Grid Grid.Column="1" Grid.Row="1">
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="auto" />
            </Grid.RowDefinitions>
            <ListBox Grid.Column="0" Grid.Row="0" ItemsSource="{Binding Console}" SelectedItem="{Binding SelectedLine}">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <local:ConsoleEntry Height="auto" DataContext="{Binding}"/>
                    </DataTemplate>
                </ListBox.ItemTemplate>
            </ListBox>
            <Grid Grid.Column="0" Grid.Row="1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="auto"/>
                    <ColumnDefinition Width="auto"/>
                </Grid.ColumnDefinitions>
                <TextBox Grid.Column="0" Grid.Row="0" Text="{Binding ConsoleInput}" />
                <Button Grid.Column="1" Grid.Row="0" Content="Send" Command="{Binding Send}"></Button>
                <Button Grid.Column="2" Grid.Row="0" Content="Clear" Command="{Binding Clear}"></Button>
            </Grid>
        </Grid>
    </Grid>
</Window>