MV485_v125/MV485/Dlg/DlgImage.xaml

<Window x:Class="MV485.Dlg.DlgImage"
        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:MV485.Dlg"
        mc:Ignorable="d"
        SizeChanged="Window_SizeChanged"
        Closed="Window_Closed"
        Title="图片查看[滑动鼠标滚轴进行缩放]" Height="550" Width="660"
        WindowStartupLocation="CenterOwner"
        PreviewMouseWheel="Window_PreviewMouseWheel"
        ShowInTaskbar="False"
        Loaded="Window_Loaded">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
            <!-- Image row -->
            <RowDefinition Height="Auto" />
            <!-- Toolbar row -->
        </Grid.RowDefinitions>

        <TextBox IsReadOnly="True" BorderThickness="0" Text="{Binding ImageSourcePath,Mode=OneWay}" Grid.Row="0"  Margin="10 5 10 5" VerticalAlignment="Center" FontSize="14px" TextWrapping="Wrap"/>
        <ScrollViewer x:Name="scrollViewer" Grid.Row="1"
                      HorizontalScrollBarVisibility="Auto" 
                      VerticalScrollBarVisibility="Auto" 
                      PanningMode="Both" 
                      PanningRatio="1">
            <Image x:Name="imgViewer" Stretch="None" RenderTransformOrigin="0.5, 0.5"
                   PreviewMouseLeftButtonDown="Image_PreviewMouseLeftButtonDown"
                   PreviewMouseMove="Image_PreviewMouseMove"
                   PreviewMouseLeftButtonUp="Image_PreviewMouseLeftButtonUp">
            </Image>
        </ScrollViewer>

        <StackPanel Grid.Row="2" Orientation="Horizontal" Background="#666666" Margin="5" HorizontalAlignment="Center">
            <Button Content="+" FontSize="20px" Width="30" Height="30" Click="ZoomIn_Click" Margin="10 5 10 5" Padding="0" Foreground="White" Background="#333333" />
            <Button Content="-" FontSize="20px" Width="30" Height="30" Click="ZoomOut_Click" Margin="0 5 10 5" Padding="0" Foreground="White" Background="#333333" />
            <Button Content="↔️" FontSize="20px" Width="30" Height="30" Click="ZoomFit_Click" Margin="0 5 10 5" Padding="0" Foreground="White" Background="#333333" />
            <Button Content="↺" FontSize="20px" Width="30" Height="30" Click="RotateLeft_Click" Margin="0 5 10 5" Padding="0" Foreground="White" Background="#333333" />
            <Button Content="↻" FontSize="20px" Width="30" Height="30" Click="RotateRight_Click" Margin="0 5 10 5" Padding="0" Foreground="White" Background="#333333" />

            <Button Content="📥" FontSize="20px" Width="30" Height="30" Click="ImageSave_Click" Margin="0 5 10 5" Padding="0" Foreground="White" Background="#333333" />
        </StackPanel>

    </Grid>
</Window>