MVVM (Part 2) - Commanding

<UserControl x:Class="HomeGrownMVVM.WelcomePage"
						 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:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
						 mc:Ignorable="d"
						 d:DesignHeight="300" d:DesignWidth="400"
						 FontSize="14"
						 Loaded="WelcomePage_Loaded"
						 x:Name="WPage"
						 >

	<Grid Background="White" HorizontalAlignment="Stretch">
		<!--Grid definition-->
		<Grid.RowDefinitions>
			<RowDefinition Height="100"></RowDefinition>
			<RowDefinition></RowDefinition>
		</Grid.RowDefinitions>
		<Grid.ColumnDefinitions>
			<ColumnDefinition Width="260" MinWidth="60"></ColumnDefinition>
			<ColumnDefinition></ColumnDefinition>
		</Grid.ColumnDefinitions>
		<!--Grid Splitter-->
		<sdk:GridSplitter Name="gridSplitter1" Width="3"
											VerticalAlignment="Stretch"
											Grid.Column="1" Grid.Row="1"
											Background="Green"
											HorizontalAlignment="Left"/>
		<!--Border that wraps the 'Menu'-->
		<Border BorderBrush="Orange"
						BorderThickness="3"
						Margin="10"
						Grid.Column="0"
						Padding="20"
						Grid.Row="1"
						CornerRadius="15"
						VerticalAlignment="Top"
						>
			<!--The 'Menu' itself-->
			<ListBox BorderThickness="0"
							 ItemsSource="{Binding MenuItemsList}"
							 >
				<ListBox.ItemTemplate>
					<DataTemplate>
						<Border HorizontalAlignment="Stretch"
										Width="180"
										BorderBrush="Gray"
										BorderThickness="{Binding SeparatorThicknes}">
							<HyperlinkButton Content="{Binding DisplayName}"
															 Command="{Binding MenuItemSelectedCommand, ElementName=WPage}"
															 CommandParameter="{Binding}"
															 BorderThickness="0"
															 Foreground="Black"
															 Margin="0"
															 FontWeight="Normal"
															 />
						</Border>
					</DataTemplate>
				</ListBox.ItemTemplate>
			</ListBox>
		</Border>
		<!--Tab Control on the Right-->
		<StackPanel HorizontalAlignment="Stretch"
								VerticalAlignment="Stretch"
								Grid.Column="1"
								Grid.Row="1"
								Margin="5,2"
								Visibility="{Binding ShowViewingArea}"
								>
			<sdk:TabControl Grid.Column="1"
											Grid.Row="1"
											HorizontalContentAlignment="Stretch"
											VerticalContentAlignment="Stretch"
											HorizontalAlignment="Left"
											VerticalAlignment="Top"
											SelectedItem="{Binding TopTabPage, Mode=TwoWay}"
											Margin="4,2,2,2"
											ItemsSource="{Binding TabPagesCollection}"
											>
			</sdk:TabControl>
		</StackPanel>
		<!--Logo-->
		<Border BorderBrush="Pink" 
						BorderThickness="0,0,0,2" 
						Grid.Column="0"
						Grid.ColumnSpan="2"
						Grid.Row="0"
						CornerRadius="0" 
						Padding="1,0, 1,3">
			<StackPanel Orientation="Horizontal" 
									HorizontalAlignment="Stretch"
									Background="WhiteSmoke"
									Grid.Column="0"
									Grid.Row="0"
									Grid.ColumnSpan="2"
									VerticalAlignment="Top">
				<Image 
						Source="Images/mvvm.png"
						HorizontalAlignment="Left"
						VerticalAlignment="Top"
				></Image>
			</StackPanel>
		</Border>
	</Grid>
</UserControl>