Change the size of an image inside border on click in c#

Question

How can I make an image inside button to make it bigger when I click it using Width and Height .

My Button XAML code is this:

<Button x:Name="Input2" Grid.Row="0" MouseEnter="Input2_MouseEnter" MouseLeave="Input2_MouseLeave" Click="Input2_Click" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="{x:Null}">
            <Button.Template>
                <ControlTemplate>
                    <Border HorizontalAlignment="Center" VerticalAlignment="Center" >
                        <Image Source= "C:\input.png"
                           Width="40" 
                           Height="40"/>
                    </Border>
                </ControlTemplate>
            </Button.Template>
</Button>

Input2.Height - Change the size of the button, not the image inside it.

My C# code:

private void Input2_Click(object sender, RoutedEventArgs e)
{
    // What to do here?
}

Answer 1

Instead of attaching a Click event handler, better use a Trigger on the Button's IsPressed property:

<Button>
    <Button.Template>
        <ControlTemplate TargetType="Button">
            <Border>
                <Image x:Name="image" Width="40" Height="40" Source="C:\input.png"/>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsPressed" Value="True">
                    <Setter TargetName="image" Property="Width" Value="50"/>
                    <Setter TargetName="image" Property="Height" Value="50"/>
                </Trigger> 
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </Button.Template>
</Button>

Answer 2

The simplest solution will be to add x:Name="input2Image" to the Image element, and enlarge the image using that name, like that:

<Button x:Name="Input2" Grid.Row="0" MouseEnter="Input2_MouseEnter" MouseLeave="Input2_MouseLeave" Click="Input2_Click" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="{x:Null}">
        <Button.Template>
            <ControlTemplate>
                <Border HorizontalAlignment="Center" VerticalAlignment="Center" >
                    <Image x:Name="Input2Image" Source= "C:\input.png"
                       Width="40" 
                       Height="40"/>
                </Border>
            </ControlTemplate>
        </Button.Template>

And:

private void Input2_Click(object sender, RoutedEventArgs e)
{
    this.Input2Image.Height = 80;
    this.Input2Image.Width = 80;
}

This should work, but you might consider start using Bindings and the MVVM pattern, to maximize the power of WPF.