private void buttonCreate_Click(object sender, EventArgs e)
{
double doubleValue1 = Convert.ToDouble(textBoxSide1.Text.Replace(".", ","));
double doubleValue2 = Convert.ToDouble(textBoxSide2.Text.Replace(".", ","));
AreaCalc.Rectangle rectangle = new AreaCalc.Rectangle(doubleValue1, doubleValue2);
FigureList.Add(rectangle);
Close();
}
public void PositiveRectangleSide2(double side2)
{
double side1 = 3;
var rectangle = new Rectangle(side1, side2);
}