SparkClient/Views/BaseWindow/HomeWindow.xaml

<Border x:Class="SparkClient.Views.BaseWindow.HomeWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:hc="https://handyorg.github.io/handycontrol"
        xmlns:local="clr-namespace:SparkClient.Views.BaseWindow"
        xmlns:baseWindow="clr-namespace:SparkClient.ViewModel.BaseWindow"
        mc:Ignorable="d" 
        >
    <!-- Height="450" Width="800" -->
    <Border.Background>
        <ImageBrush ImageSource="pack://application:,,,/Resource/Images/homebg.png" Stretch="UniformToFill" />
    </Border.Background>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

        <!-- 左侧占位 -->
        <Grid Grid.Column="0"></Grid>

        <!-- 右侧主内容 -->
        <Grid Grid.Column="1" VerticalAlignment="Center" Height="800" Width="500">
            <Grid.RowDefinitions>
                <!-- 第一排 -->
                <RowDefinition Height="8*" /> 
                <!-- 第二排 -->
                <RowDefinition Height="5*" /> 
            </Grid.RowDefinitions>

            <!-- 第一排按钮 -->
            <Button Grid.Row="0" HorizontalAlignment="Stretch" Height="500"
                    Background="Transparent" BorderBrush="Azure" >
                <Viewbox HorizontalAlignment="Stretch"  >
                    <Grid Margin="15 " >
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>
                        <Image Grid.Row="0" Source="pack://application:,,,/Resource/Images/diam_3x.png" Height="200"   />
                        <Image Grid.Row="1" Margin=" 0 -40 0 10" Source="pack://application:,,,/Resource/Images/hand_3x.png" Height="100"  />
                        <TextBlock Grid.Row="2" Text="1{DynamicResource StartTest}" FontSize="32" 
                                   TextAlignment="Center" Foreground="Azure"/>
                    </Grid>
                    
                </Viewbox>
                
            </Button>
            

            <!-- 第二排两个按钮 -->
            <Grid Grid.Row="1" Margin="0 10 0 0">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>

                <!-- 第二排第一个按钮 -->
                <Border Grid.Column="0"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Stretch"
                        Background="LightCoral">
                    <TextBlock Text="按钮 2" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="White" />
                </Border>
                
                <Border Grid.Column="1" Width="10" />
                        <!-- 第二排第二个按钮 -->
                <Border Grid.Column="2"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Stretch"
                        Background="LightGreen">
                    
                    <Button Content="帮助" VerticalAlignment="Center" HorizontalAlignment="Center" 
                            Command="{Binding ShowHelperPageCommand}" >
                        
                    </Button>
                </Border>
            </Grid>
        </Grid>
    </Grid>

</Border>