xhwkclient/XHWK.WKTool/CountdownWindow.xaml

<Window x:Class="XHWK.WKTool.CountdownWindow"
        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:XHWK.WKTool"
        xmlns:gifLib="http://wpfanimatedgif.codeplex.com"
        mc:Ignorable="d"
        Title="CountdownWindow" Height="450" Width="800"  AllowsTransparency="True"
    ShowInTaskbar="False"
    WindowStartupLocation="CenterOwner" WindowState="Maximized"
    WindowStyle="None">
    <Window.Background>
        <SolidColorBrush Opacity="0.10" Color="#292C2E" />
    </Window.Background>
    <Grid>
        <!--<Image x:Name="ImgGif"
                    Width="600"
                    Height="600"
                    gifLib:ImageBehavior.AnimatedSource=".\Images\countdown.gif" MediaElement.MediaEnded="Image_MediaEnded"/>-->
        <Image x:Name="imgLoding"
                    Width="600"
                    Height="600"
                    Source=".\Images\countdown_3.png" />
    </Grid>
</Window>