XmlDocument xml = new XmlDocument();
xml.Load(path);//0827
XmlNode widthnode = xml.SelectSingleNode("/ThermalLabel/Width");
XmlElement widthxe = (XmlElement)widthnode;
XmlNode heightnode = xml.SelectSingleNode("/ThermalLabel/Height");
XmlElement heightxe = (XmlElement)heightnode;
XmlNodeList nodelist = xml.SelectNodes("/ThermalLabel/Items"); 可以获取 items 的节点
为啥 heightnode widthnode 返回都是空呢