public string Update(int itemId, int quantity)
{
int availablequantity = stockInGateway.GetStockInById(itemId);
availablequantity -= quantity;
StockIn stockIn = new StockIn();
stockIn.ItemId = itemId;
stockIn.AvailableQuantity = availablequantity;
int rowAffect = stockInGateway.Update(stockIn);
if (rowAffect > 0)
{
return("Update Successful");
}
else
{
return("Update Failed");
}
}