update.xaml

<Window x:Class="update"
        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:SeewoStart"
        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes" xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
        mc:Ignorable="d"
        Title="正在检查更新~" Height="385" Width="674" WindowStartupLocation="CenterScreen" ResizeMode="NoResize" FontFamily="HarmonyOS Sans SC Black">
    <Window.Resources>
        <Storyboard x:Key="ColorAnimation">
            <ColorAnimation
                Storyboard.TargetProperty="(Control.Foreground).(SolidColorBrush.Color)"
                From="Red" To="Blue" Duration="0:0:1"
                AutoReverse="True" RepeatBehavior="Forever" />
        </Storyboard>
    </Window.Resources>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <TextBlock x:Name="_114514in" HorizontalAlignment="Left" Height="26" Margin="20,11,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="642" FontFamily="/SeewoStart;component/Font/#HarmonyOS Sans SC Black" FontSize="18"><Run Language="zh-cn" Text="无可用更新..."/></TextBlock>
        <TextBlock x:Name="ver666" HorizontalAlignment="Left" Height="34" Margin="47,52,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="576" FontFamily="HarmonyOS Sans SC Black" FontSize="14"><Run Language="zh-cn" Text="当前版本已是最新 Version4.0"/></TextBlock>
        <TextBlock x:Name="gxnr114" HorizontalAlignment="Left" Height="217" Margin="47,91,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="590" FontFamily="HarmonyOS Sans SC Light"><Run Language="zh-cn" Text="更新内容:"/></TextBlock>
        <Button x:Name="checkupdate" Content="检查更新" HorizontalAlignment="Left" Height="31" Margin="426,310,0,0" VerticalAlignment="Top" Width="96" FontFamily="HarmonyOS Sans SC Black"/>
        <Button x:Name="dlgx" Content="下载更新" HorizontalAlignment="Left" Height="31" Margin="549,311,0,0" VerticalAlignment="Top" Width="97" IsEnabled="False" Click="dlgx_Click"/>
        <materialDesign:Snackbar
x:Name="SnackbarOne"
IsActive="False"
Message="无可用更新 " HorizontalAlignment="Center" VerticalAlignment="Bottom" />
        <materialDesign:DialogHost x:Name="errorbox1145" Identifier="errorbox114"
DialogContentUniformCornerRadius="18"
DialogTheme="Inherit" Visibility="Visible" Margin="-10,10,10,-10">
            <materialDesign:DialogHost.DialogContent>
                <StackPanel x:Name="HelperGrid" Background="White">
                    <TextBlock x:Name="singleTitle" Margin="16,16,16,0" FontFamily="HarmonyOS Sans SC Medium" FontSize="24" ></TextBlock>
                    <ScrollViewer x:Name="HelperContent">
                        <TextBlock x:Name="singleText" Margin="16,5,16,16" FontFamily="HarmonyOS Sans SC Medium" FontSize="16" TextWrapping="Wrap" Text="首先，API Key 的申请和使用是完全免费的，无需任何费用，申请前后也无需观看任何广告。" ></TextBlock>
                    </ScrollViewer>
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="16">
                        <Button Content="好" Command="{x:Static materialDesign:DialogHost.CloseDialogCommand}" IsDefault="True" CommandParameter="True" Style="{StaticResource MaterialDesignFlatButton}" Foreground="{DynamicResource MaterialDesign.Brush.Primary}"/>
                    </StackPanel>
                </StackPanel>
            </materialDesign:DialogHost.DialogContent>
        </materialDesign:DialogHost>
    </Grid>
</Window>