void UpdateEllipse(EllipseShape ellipse) { var selectedItem = (PropertyInfo)borderColor.SelectedItem; Color color = (Color)selectedItem.GetValue(null, null); SolidColorBrush border = new SolidColorBrush(color); selectedItem = (PropertyInfo)fillColor.SelectedItem; color = (Color)selectedItem.GetValue(null, null); SolidColorBrush fill = new SolidColorBrush(color); int Thickness = Int32.Parse(textBoxThickness.Text); ellipse.UpdateShape(fill, border, Thickness); }