public virtual decimal CalculateDiscount( 
   int lineItemQuantity,
   int totalQuantity,
   decimal lineItemValue,
   decimal totalValue
)

Parameters

lineItemQuantity

Quantity of line item to be discounted.

totalQuantity

Total quantity of all line items used to determine eligibility for discount.

lineItemValue

Extended Price of product (or line item) to be discounted.

totalValue

If grouping discount mode is enabled, this is the total Extended Price of all products from the same category; if line item discount mode is enabled, this should be the same value as lineItemValue.

Return Value

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

VolumeDiscount Class
VolumeDiscount Members