WPF_Button_Image.xaml

<Window x:Class="WPF_LayoutTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        Icon="BuildSolution_104.png"
        >
    <Window.Resources>
        <ControlTemplate x:Key="ButtonTemplate" TargetType="Button">
            <Border Name="ButtonTemplate_Border" Padding="2">
                <ContentPresenter />
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter TargetName="ButtonTemplate_Border" Property="Background" Value="#FFCCE8FF" />
                </Trigger>
                <Trigger Property="IsPressed" Value="True">
                    <Setter TargetName="ButtonTemplate_Border" Property="Background" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}" />
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </Window.Resources>

    <Grid x:Name="LayoutRoot" Background="White" >
        <StackPanel HorizontalAlignment="Center" >
            <Button Template="{StaticResource ButtonTemplate}" Width="18" Height="18">
                <Image Source="BuildSolution_104.png" />
            </Button>
            <Button Width="20">
                <Image Source="BuildSolution_104.png" />
            </Button>
        </StackPanel>
    </Grid>
</Window>