Question

我一直试图读取给定菜单项的卡路里，但它无效。这是我的XML文件的样子。

<?xml version="1.0" encoding="utf-8" ?>
<menu>
 <!-- Burger -->
 <item>
   <name>Burger</name>
   <price>$5.99</price>
   <calories>500</calories>
   <description>A burger made with 100% Angus beef and grilled to your liking. Served with fries</description>
   <count>25</count>
  </item>
 </menu>

我尝试读取卡路里的功能看起来像这样

public string calorieCount(int choice)
    {
        string calCount="";
        string path = "XMLFile1.xml";
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.LoadXml(path);
        XmlElement root = xmlDoc.DocumentElement;
        switch (choice)
        {
        case '0':
            //read the calories of burger and fries and return
            var node = root.SelectSingleNode("//item/name/calories");
            calCount = node.Value;
            break;
        }
       return calCount;
     }

我认为问题出在var node = root.SelectSingleNode("//item/name/calories");，因为它不知道哪个项目。那么如何告诉它获取名为“Burger”的物品的卡路里？

Answer 1

//项[名= '汉堡'] /卡路里

在C＃中获取XML文件中节点的值？

1 个答案: