一个IMAGE BUTTON

<ControlTemplate x:Key="UserButton" TargetType="{x:Type Button}">
          <Grid>
               <Image x:Name="defaultimage" HorizontalAlignment="Stretch" Width="210" Height="55" Stretch="None" Source="b4.png"/>
               <Image x:Name="forcusimage" HorizontalAlignment="Stretch" Width="210" Height="55" Stretch="None" Panel.ZIndex="10" Source="b5.png" Visibility="Hidden"/>
               <TextBlock x:Name="text" Margin="0" TextWrapping="Wrap" Text="click button"  HorizontalAlignment="Center" Panel.ZIndex="100"/>
           </Grid>
           <ControlTemplate.Triggers>
               <Trigger Property="IsEnabled" Value="False">

               </Trigger>
           </ControlTemplate.Triggers>
       </ControlTemplate>
       <ControlTemplate x:Key="UserButton1" TargetType="{x:Type Button}">
           <Grid>
               <Image Name="img" Source="/b4.png"/>
               <!--TextBlock Name="text" Text="文字" HorizontalAlignment="Center" VerticalAlignment="Center"/-->
               <ContentPresenter  HorizontalAlignment="Center" VerticalAlignment="Center"/>
           </Grid>
           <ControlTemplate.Triggers>
               <Trigger Property="IsEnabled" Value="False">
                   <Setter TargetName="img" Property="Source" Value="/b5.png">
                   </Setter>
               </Trigger>
               <Trigger Property="IsMouseOver" Value="True">
                   <Setter TargetName="img" Property="Source" Value="/b6.png">
                   </Setter>
                   <Trigger.EnterActions>
                       <BeginStoryboard>
                           <Storyboard>
                               <DoubleAnimation Storyboard.TargetName="img" Storyboard.TargetProperty="Width" From="150" To="200" Duration="0:0:0.1" />
                           </Storyboard>
                       </BeginStoryboard>
                   </Trigger.EnterActions>
                   <Trigger.ExitActions>
                       <BeginStoryboard>
                           <Storyboard>
                               <DoubleAnimation Storyboard.TargetName="img" Storyboard.TargetProperty="Width" From="200" To="150" Duration="0:0:0.1" />
                           </Storyboard>
                       </BeginStoryboard>
                   </Trigger.ExitActions>
               </Trigger>
           </ControlTemplate.Triggers>
       </ControlTemplate>

//调用

<Button  Content="文字" Width="150" Tag="zoomout" ToolTip="放大" Template="{StaticResource  UserButton1}" />