Kepler-Release/Venus/Venus_UI/Views/ShellView.xaml

<wnd:CustomWnd x:Class="Venus_UI.Views.ShellView"
        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:wnd="http://OpenSEMI.Ctrlib.com/presentation"
        WindowState="Maximized"
        WindowStartupLocation="CenterScreen"
        xmlns:prism="http://prismlibrary.com/"
        mc:Ignorable="d"
        Title="JetPlasma" Height="450" Width="800" Loaded="CustomWnd_Loaded">
    <Grid>
        
        <Grid.RowDefinitions>
            <RowDefinition Height="100"/>
            <RowDefinition/>
            <RowDefinition Height="60"/>
        </Grid.RowDefinitions>

        <ContentControl x:Name="Top_Frame" Grid.Row="0"  prism:RegionManager.RegionName="TopRegion"/>

        <ContentControl x:Name="Main_Frame" Grid.Row="1" prism:RegionManager.RegionName="MainRegion" />

        <StackPanel x:Name="Bottom_Frame" Grid.Row="2" Background="{DynamicResource BottomFrame_BG}" Orientation="Horizontal"/>
    </Grid>
</wnd:CustomWnd>