App.xaml

<Application x:Class="SistemaLibreriaImagina.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:viewModel="clr-namespace:SistemaLibreriaImagina.ViewModels"
             xmlns:view="clr-namespace:SistemaLibreriaImagina.View"
             StartupUri="View/LoginView.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/Light.Cobalt.xaml" />
                <ResourceDictionary Source="Themes/MenuButtonTheme.xaml" />
                <ResourceDictionary Source="Themes/TextboxTheme.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <Style TargetType="{x:Type Window}">
                <Setter Property="FontFamily" Value="Montserrat"/>
            </Style>
            <DataTemplate DataType="{x:Type viewModel:InicioViewModel}">
                <view:InicioView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:LoginViewModel}">
                <view:LoginView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:InventarioViewModel}">
                <view:InventarioView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:RestockViewModel}">
                <view:RestockView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:ModificarLibroViewModel}">
                <view:ModificarLibroView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:PedidosViewModel}">
                <view:PedidosView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:UsersViewModel}">
                <view:UsersView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:ModificarPedidoViewModel}">
                <view:ModificarLibroView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:POSViewModel}">
                <view:POSView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:CrearUsuarioViewModel}">
                <view:CrearUsuarioView />
            </DataTemplate>
            <DataTemplate DataType="{x:Type viewModel:CrearLibroViewModel}">
                <view:CrearLibroView />
            </DataTemplate>
        </ResourceDictionary>
    </Application.Resources>
</Application>