Hi Michal,

I have added those lines to my code but I think I am not sure under which class am I suppose to add it.

Below is the error message that I am getting afteer adding those lines:

CS1061: 'CustomShoppingCartInfoProvider' does not contain a definition for 'ShoppingCartInfoObj' and no extension method 'ShoppingCartInfoObj' accepting a first argument of type 'CustomShoppingCartInfoProvider' could be found (are you missing a using directive or an assembly reference?)

Error Line: 	 if (this.ShoppingCartInfoObj.ShoppingCartDiscountCouponID > 0)

Below is my complete code for CustomShoppingCartInfoProvider.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using CMS.Ecommerce;

using CMS.GlobalHelper;
using CMS.EcommerceProvider;


public class CustomShoppingCartInfoProvider : ShoppingCartInfoProvider
{
	
    protected override double CalculateOrderDiscountInternal(ShoppingCartInfo cart)
    {
	    double result = base.CalculateOrderDiscountInternal(cart);
	
		double UnitPrice = 24.90; 
		double CartAmount = cart.TotalItemsPriceInMainCurrency;		
		double CartQuantity = CartAmount/UnitPrice;
		double DiscountAmount =0;//Discount should be declared in if Condition
		double NewPricePerUnit = 0;//UnitPrice - DiscountAmount				
		double NewCartAmountAfterDiscount = 0;//CartQuantity * NewPricePerUnit
		
		
		
		 if (this.ShoppingCartInfoObj.ShoppingCartDiscountCouponID > 0)
			{                    
				 DiscountCouponInfo dci = DiscountCouponInfoProvider.GetDiscountCouponInfo(ShoppingCartInfoObj.ShoppingCartDiscountCouponID);                
			}
			
		if(CMS.CMSHelper.CMSContext.CurrentSiteName == "EcommerceSite")
		{
	
            if (CartQuantity == 1)
				{
				}
						
		  	else if (CartQuantity == 2)
				{
					DiscountAmount = 1;				
					NewPricePerUnit = UnitPrice - DiscountAmount;
					NewCartAmountAfterDiscount = CartQuantity * NewPricePerUnit;
					result = CartAmount - NewCartAmountAfterDiscount;
				}
			
			else if (CartQuantity == 4)
				{
					DiscountAmount = 3;				
					NewPricePerUnit = UnitPrice - DiscountAmount;
					NewCartAmountAfterDiscount = CartQuantity * NewPricePerUnit;
					result = CartAmount - NewCartAmountAfterDiscount;	
				}

			else if ((CartQuantity >= 5) && (CartQuantity < 10))
				{
					DiscountAmount = 4;				
					NewPricePerUnit = UnitPrice - DiscountAmount;
					NewCartAmountAfterDiscount = CartQuantity * NewPricePerUnit;
					result = CartAmount - NewCartAmountAfterDiscount;	
				}

			else if (CartQuantity >= 10)
				{
					DiscountAmount = 5.40;				
					NewPricePerUnit = UnitPrice - DiscountAmount;
					NewCartAmountAfterDiscount = CartQuantity * NewPricePerUnit;
					result = CartAmount - NewCartAmountAfterDiscount;	
				}	
			else
				{
				
				result = 6;
				}
				
		}
		
        return result;
    }
}

Am I missing a assembly?

Your help is much appreciated.

Thanks
Gitesh Shah