public void CalculateDiscount(double customer, double vatPercent)
{
_discountPercent = 0;
_total = 0;
_totalVat = 0;
_totalDiscount = 0;
_grandTotal = 0;
SaleFlow sFlow = new SaleFlow();
DataTable dt = (DataTable)System.Web.HttpContext.Current.Session[sessionName];
if (dt != null)
{
foreach (DataRow dRow in dt.Rows)
{
_totalDiscount += Convert.ToDouble(dRow["NORMALDISCOUNT"])*Convert.ToDouble(dRow["QTY"]);
_grandTotal += Convert.ToDouble(dRow["NETPRICE"]) - (Convert.ToDouble(dRow["NORMALDISCOUNT"]) * Convert.ToDouble(dRow["QTY"]));
}
_totalVat = sFlow.CalculateTotalVat(_grandTotal + _totalDiscount, vatPercent);
_total = _grandTotal + _totalDiscount - _totalVat;
if (sFlow.GetCustomerDiscount(customer, _total + _totalVat))
_discountPercent = sFlow.DISCOUNT;
if (_discountPercent > 0)
{
if (_totalDiscount < sFlow.CalcucateDiscount(_total + _totalVat, _discountPercent))
{
_total = 0;
_totalVat = 0;
_totalDiscount = 0;
_grandTotal = 0;
foreach (DataRow dRow in dt.Rows)
{
dRow["DISCOUNT"] = sFlow.CalcucateDiscount(Convert.ToDouble(dRow["PRICE"]), _discountPercent);
dRow["NETPRICE"] = sFlow.CalcucateProductTotalItem(Convert.ToDouble(dRow["PRICE"]), Convert.ToDouble(dRow["QTY"]), 0);
_totalDiscount += Convert.ToDouble(dRow["DISCOUNT"]) * Convert.ToDouble(dRow["QTY"]);
_grandTotal += Convert.ToDouble(dRow["NETPRICE"]) - (Convert.ToDouble(dRow["DISCOUNT"]) * Convert.ToDouble(dRow["QTY"]));
}
System.Web.HttpContext.Current.Session[sessionName] = dt;
_totalVat = sFlow.CalculateTotalVat(_grandTotal + _totalDiscount, vatPercent);
_total = _grandTotal + _totalDiscount - _totalVat;
}
}
}
}
private bool IsDuplicate(RequisitionItemData data)
{
bool ret = false;
DataTable dt = (DataTable)System.Web.HttpContext.Current.Session[sessionName];
if (dt != null)
{
SaleFlow sFlow = new SaleFlow();
foreach (DataRow dRow in dt.Rows)
{
if (Convert.ToDouble(dRow["PRODUCT"]) == data.PRODUCT && Convert.ToDouble(dRow["LOID"]) != data.LOID)
{
dRow["QTY"] = Convert.ToDouble(dRow["QTY"]) + data.QTY;
dRow["NETPRICE"] = sFlow.CalcucateProductTotalItem(Convert.ToDouble(dRow["PRICE"]), Convert.ToDouble(dRow["QTY"]), 0);
ret = true;
break;
}
}
if (ret)
{
DataRow[] dRow = dt.Select("LOID = " + data.LOID.ToString());
if (dRow != null)
{
if (dRow.Length > 0)
{
dt.Rows.Remove(dRow[0]);
ReOrder(dt);
}
}
System.Web.HttpContext.Current.Session[sessionName] = dt;
}
}
return ret;
}