MainWindow.xaml

<Window
	x:Class="WPFTodo.MainWindow"
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:controls="clr-namespace:WPFTodo.UserControls"
	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
	xmlns:local="clr-namespace:WPFTodo"
	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
	xmlns:views="clr-namespace:WPFTodo.Views"
	xmlns:vms="clr-namespace:WPFTodo.ViewModels"
	Title="MainWindow"
	Width="900"
	Height="1185"
	mc:Ignorable="d">
	<Grid d:DataContext="{d:DesignInstance vms:MainViewModel}">
		<Grid.Resources>
			<DataTemplate DataType="{x:Type vms:HomeViewModel}">
				<views:HomeView />
			</DataTemplate>
		</Grid.Resources>

		<ContentControl>
			<ContentControl.Content>
				<Binding Path="CurrentViewModel">
					<Binding.TargetNullValue>
						<Grid Background="{StaticResource BrushBgDefault}">
							<controls:LoadingSpinner />
						</Grid>
					</Binding.TargetNullValue>
				</Binding>
			</ContentControl.Content>
		</ContentControl>
	</Grid>
</Window>