<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="200" Width="400">
    <Window.Resources>
        <!-- Style for ImageButton -->
        <Style x:Key="ImageButtonStyle" TargetType="Button">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="BorderBrush" Value="Transparent"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Grid>
                            <Image Source="your-image-path.png" Width="100" Height="100"/>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    
    <Grid>
        <!-- Applying the style to the button -->
        <Button Style="{StaticResource ImageButtonStyle}" Width="100" Height="100"/>
    </Grid>
</Window>