private void OnAddExecute()
{
SlopeCalculate();
var wrapper = new SlopeWrapper(new Slope());
wrapper.SlopeType = Slope.SlopeType;
wrapper.SlopeSquare = Slope.SlopeSquare;
wrapper.ModuleCost = Slope.ModuleCost;
wrapper.ModuleQuantity = Slope.ModuleQuantity;
wrapper.Summ = Slope.Summ;
wrapper.PropertyChanged += Wrapper_PropertyChanged;
Slopes.Add(wrapper);
CurrentRoof.RoofSquare += Slope.SlopeSquare;
CurrentRoof.TotalQuantity += Slope.ModuleQuantity;
CurrentRoof.TotalSum += Slope.Summ;
}
