Question

我有一个具有此结构的xml文件。节点“设置”仅重复一次。节点“提醒”可以出现+ 1次。

<?xml version="1.0" encoding="utf-8"?>
<!--Name App-->
<AllSettings>
  <Settings>
    <tax1>21</tax1>
    <tax2>0</tax2>    
  </Settings>
  <Reminders>
    <Name>s8</Name>
    <Title>xxxxx</Title>
    <Content>xxxxxxxxx</Content>
    <BeginTime>09/11/2012 10:00:00</BeginTime>
  </Reminders>
  <Reminders>
    <Name>s2</Name>
    <Title>zzzzzzzzz</Title>
    <Content>zzzzzzzzzzz</Content>
    <BeginTime>07/11/2012 13:00:00</BeginTime>    
  </Reminders>  
</AllSettings>

我可以使用底部代码在“settings”节点中读取数据。但我怎样才能从每个节点“提醒”中读取数据？

IsolatedStorageFileStream isoFileStream = myIsolatedStorage.OpenFile(myXmlFile, FileMode.Open);
isoFileStream.Position = 0;
XmlReader xmlReader;
xmlReader = XmlReader.Create(isoFileStream);                                           
xmlReader.MoveToContent(); 

while (xmlReader.Read())
{    

  if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.LocalName == "Settings"
  {
     while (xmlReader.NodeType != XmlNodeType.EndElement)
     {
          xmlReader.Read();

          if (xmlReader.Name == "tax1")
          {
                _tax1 = xmlReader.ReadElementContentAsString();
          }
          else if (xmlReader.Name == "tax2")
          {
                _tax2 = xmlReader.ReadElementContentAsString();
          }

      } // end while
  } 
  else if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.LocalName == "Reminders")
  {
       // ????            
  }

} // end while

Answer 1

使用Linq2Xml更容易

var xDoc = XDocument.Load(filename);
var reminders = xDoc.Descendants("Reminders")
                    .Select(r => new
                    {
                        Name = (string)r.Element("Name"),
                        Title = (string)r.Element("Title"),
                        Content = (string)r.Element("Content"),
                        BeginTime = (DateTime)r.Element("BeginTime"),
                    })
                    .ToList();

var firstTitle = reminders[0].Title;

或

var remDicts = xDoc.Descendants("Reminders")
       .Select(r => r.Elements().ToDictionary(e => e.Name.LocalName, e => e.Value))
       .ToList();

var firstTitle = remDicts[0]["Title"];

Answer 2

将其加载到XDocument并使用LINQ to XML进行查询。

var isoFileStream = myIsolatedStorage.OpenFile(myXmlFile, FileMode.Open);
isoFileStream.Position = 0;

var xdoc = XDocument.Load(isoFileStream);
var reminderNodes = from n in xdoc.Descendants("Reminders") select n;

foreach (var n in reminderNodes)
{
    ProcessReminder(n);
}

void ProcessReminder(XElement node)
{
    // do something... for now I'll just output to console.
    Console.WriteLine("Name: {0}", n.Element("Name").Value); 
    Console.WriteLine("Title: {0}", n.Element("Title").Value);
    Console.WriteLine("BeginTime: {0}", n.Element("BeginTime").Value);
    Console.WriteLine();
}

Answer 3

我建议使用XmlNode.Value而不是从XmlReader获取数据。

Answer 4

我建议使用xsd.exe工具从XM生成.XSD，从.XSD生成C＃类，之后，只需使用LINQ语法进行查询。

This might help或this search

Answer 5

您可以使用XmlDocument而不是XmlReader

使用C＃从文件中读取XML文件

5 个答案: