ElipseControl.xaml.cs

using System.Windows.Controls;
using System.Windows.Media;

namespace R722ControlWPFEnWinForms
{
    /// <summary>
    /// Interaction logic for ElipseControl.xaml
    /// </summary>
    public partial class ElipseControl : UserControl
    {
        public ElipseControl()
        {
            InitializeComponent();
        }

        public string Color
        {
            get
            {
                if (Elipse.Fill == (Brush)grdPrincipal.Resources["Rojo"])
                {
                    return "Red";
                }
                else
                {
                    return "Blue";
                }
            }
        }

        public void CambiarColor()
        {
            if (Elipse.Fill == (Brush)grdPrincipal.Resources["Rojo"])
            {
                Elipse.Fill = (Brush)grdPrincipal.Resources["Azul"];
            }
            else
            {
                Elipse.Fill = (Brush)grdPrincipal.Resources["Rojo"];
            }
        }
    }
}