void TLogTranslateItem_OnBeforeRuleProcess(object sender, EventArgs e)
{
XmlDocument doc = (XmlDocument)sender;
System.Xml.XPath.XPathNavigator nav = doc.CreateNavigator();
Shipping = doc.SelectSingleNode("CustomerOrder/Customer/@Shipping_Price") == null ? 0 : Convert.ToDouble(doc.SelectSingleNode("CustomerOrder/Customer/@Shipping_Price").Value);
TaxableShipping = doc.SelectSingleNode("CustomerOrder/Customer/@Taxable_Shipping_Amount") == null ? 0 : Convert.ToDouble(doc.SelectSingleNode("CustomerOrder/Customer/@Taxable_Shipping_Amount").Value);
Handling = Convert.ToDouble(nav.Evaluate("sum(//*/@Handling_Charge)"));
}
public double eval_double(string expr)
{
try { return((double)_eval.Evaluate(string.Format("number({0})", expr))); } catch (Exception ex) { log.log_err(expr); throw ex; }
}