C# 使用 Linq 查询 XML 文档
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时间：2020-08-10 08:13:07 来源:igfitidea点击:
Querying XML document using Linq
提问by Ramesh Sivaraman
I am trying to Linq an xml document, I am unable to query the inner elements as you can see from below code what I am trying to do. I want to get all records which has a certain name... Please help.
我正在尝试 Linq 一个 xml 文档，我无法查询内部元素，正如您可以从下面的代码中看到的我正在尝试执行的操作。我想获取所有具有特定名称的记录...请帮忙。
<?xml version="1.0" encoding="utf-8" ?>
<Student>
<Person name="John" city="Auckland" country="NZ" />
<Person>
<Course>GDICT-CN</Course>
<Level>7</Level>
<Credit>120</Credit>
<Date>129971035565221298</Date>
</Person>
<Person>
<Course>GDICT-CN</Course>
<Level>7</Level>
<Credit>120</Credit>
<Date>129971036040828501</Date>
</Person>
</Student>
And now the source
现在来源
class Program
{
static void Main(string[] args)
{
string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
XDocument xDoc = XDocument.Load(path + "\Student Data\data.xml");
IEnumerable<XElement> rows =
from row in xDoc.Descendants("Person")
where (string)row.Attribute("Course") == "GDICT-CN"
select row;
foreach(XElement xEle in rows)
{
IEnumerable<XAttribute>attlist =
from att in xEle.DescendantsAndSelf().Attributes()
select att;
foreach(XAttribute xatt in attlist)
{
Console.WriteLine(xatt);
}
foreach (XElement elemnt in xEle.Descendants())
{
Console.WriteLine(elemnt.Value);
}
Console.WriteLine("-------------------------------------------");
}
Console.ReadLine();
}
}
采纳答案by Rohit Vats
Replace your LINQ wherequery with this one -
LINQ where用这个替换您的查询 -
IEnumerable<XElement> rows = xDoc.Descendants().Where(d => d.Name == "Person"
&& d.Descendants().Any(e => e.Name == "Course"
&& e.Value == "GDICT-CN"));
