Visibilityを変更するボタン

しょっぱい小技です。
MVVMで作っていて、表示をON/OFFするボタンが面倒になったので作りました。
どうせ探せばあるのでしょう。はいはい車輪の再発明。

ChangeVisibilityButton.cs

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace MySilverlightLibrary.Control
{
    public class ChangeVisibilityButton:Button
    {
        public FrameworkElement TargetElement
        {
            get { return (FrameworkElement)GetValue(TargetElementProperty); }
            set { SetValue(TargetElementProperty, value); }
        }

        // Using a DependencyProperty as the backing store for TargetElement.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TargetElementProperty =
            DependencyProperty.Register("TargetElement", typeof(FrameworkElement), typeof(ChangeVisibilityButton), new PropertyMetadata(null));

        public ChangeVisibilityButton()
        {
            this.Click += ChangeVisibilityButton_Click;
        }

        void ChangeVisibilityButton_Click(object sender, RoutedEventArgs e)
        {
            if( TargetElement !=null)
            {
                if(TargetElement.Visibility == System.Windows.Visibility.Visible)
                {
                    TargetElement.Visibility = System.Windows.Visibility.Collapsed;
                }
                else
                {
                    TargetElement.Visibility = System.Windows.Visibility.Visible;
                }
            }
        }

    }
}

使い方
TargetElementに対象をBindingしてください。
xml
<Grid x:Name="LayoutRoot">
<StackPanel>
<my:ChangeVisibilityButton Width="100" Height="30" Content="test" TargetElement="{Binding ElementName=test}"></my:ChangeVisibilityButton>
<Button Name="test" Height="50" Background="Aqua" Foreground="AliceBlue"></Button>
</StackPanel>
</Grid>