aivfo-tl-3.0/ivf_tl_operate_2.0/ivf_tl_Operate/Windows/GetDateWindow.xaml

<Window x:Class="ivf_tl_Operate.Windows.GetDateWindow"
        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.Windows"
          xmlns:customUserControl="clr-namespace:ivf_tl_Operate.CustomUserControls"
        mc:Ignorable="d"
         WindowStyle="None"
        ShowInTaskbar="False"
        AllowsTransparency="True" 
        WindowStartupLocation="CenterOwner" Width="1400" Height="1100">
    <Grid>
        <customUserControl:CustomerDateControl x:Name="_dateControl" />
    </Grid>
</Window>