private NumericTextBoxProperty AddHeightControl(float?height)
        {
            var heightControl = new NumericTextBoxProperty();

            heightControl.PropertyName = "Height";
            panel.Controls.Add(heightControl);

            if (height.HasValue)
            {
                heightControl.PropertyValue = height.Value.ToString();
            }

            return(heightControl);
        }
        private NumericTextBoxProperty AddRadiusControl(float?radius)
        {
            var radiusControl = new NumericTextBoxProperty();

            radiusControl.PropertyName = "Radius";
            panel.Controls.Add(radiusControl);

            if (radius.HasValue)
            {
                radiusControl.PropertyValue = radius.Value.ToString();
            }

            return(radiusControl);
        }