public void SaveDetail()
{
if (SODetail.ProductId != 0)
{
SalesOrderDetail pod = SODetails.Where(x => x.ProductId == SODetail.ProductId).FirstOrDefault();
if (pod == null)
{
pod = new SalesOrderDetail();
SODetails.Add(pod);
}
else
{
SODetail.Quantity += pod.Quantity;
}
SODetail.toCopy<SalesOrderDetail>(pod);
ClearDetail();
ItemAmount = SODetails.Sum(x => x.Amount);
}
}
