問題與同時創建XPathNodeIterator

Question

環

我想while循環創建XPathNodeIterator對象

 XPathNodeIterator xpCategories = GetCategories().Current.Select("/root/category/id");  

現在xpCategories持有這樣

<root> 
    <category numberofproducts="0"> 
    <id>format</id> 
    <name>Kopi/Print</name> 
    </category> 
    <category numberofproducts="1"> 
    <id>frankering</id> 
    <name>Kopi/Print</name> 
    </category> 
    <category numberofproducts="0"> 
    <id>gardbøjler</id> 
    <name>Møbler</name> 
    </category> 
    <category numberofproducts="0"> 
    <id>gardknager</id> 
    <name>Møbler</name> 
    </category> 
    <category numberofproducts="0"> 
    <id>gardspejle</id> 
    <name>Møbler</name> 
    </category> 

</root> 

一個XML的，我需要得到每個類別的節點「id」在loop.tried這樣的一些事情是這樣的

XPathNodeIterator xpCategories = GetCategories().Current.Select("/root/category/id");  
while (xpCategories.MoveNext()) 
Console.WriteLine(xpCategories.Current.Value); 

但是這個循環只工作一次之後它退出了。我不明白髮生了什麼問題？

Answer 1

應該

while (xpCategories.MoveNext()) 
{ 
    XPathNavigator n = xpCategories.Current; 
    Console.WriteLine(n.Value); 
} 

OR

foreach (XPathNavigator n in xpCategories)Console.WriteLine(n.Value); 

---

雖然我會建議LINQ2XML

XDocument doc=XDocument.Load(xmlPath); 
List<string> ids=doc.Elements("category") 
        .Select(x=>x.Element("id").Value) 
        .ToList();