aivfo-tl-3.0/ivf_tl_operate_2.0/ivf_tl_Operate/MainWindow.xaml

<Window x:Class="ivf_tl_Operate.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:ivf_tl_Operate"
         mc:Ignorable="d"
        WindowStyle="None"
        WindowState="Maximized"
        WindowStartupLocation="CenterScreen"
        Title="IndexWindow">
    <Grid x:Name="MainGrid">
        <ContentControl x:Name="_container"/>
        <Grid x:Name="_mask" Opacity="0.8" Background="Black" Visibility="Hidden"/>
    </Grid>
</Window>