XML/C#:仅当属性正确时才读取内容
我有一个XML文件,如下所示,我试图读取Name标记的内容,只有当Record标记的属性是我想要的时。(以下代码续) XML文件是:XML/C#:仅当属性正确时才读取内容,c#,xml,xmlreader,C#,Xml,Xmlreader,我有一个XML文件,如下所示,我试图读取Name标记的内容,只有当Record标记的属性是我想要的时。(以下代码续) XML文件是: <?xml version="1.0" encoding="utf-8" ?> <Database> <Record Number="1"> <Name>John Doe</Name> <Position>1</Position> <HoursWo
<?xml version="1.0" encoding="utf-8" ?>
<Database>
<Record Number="1">
<Name>John Doe</Name>
<Position>1</Position>
<HoursWorked>290</HoursWorked>
<LastMonthChecked>0310</LastMonthChecked>
</Record>
<Record Number="2">
<Name>Jane Doe</Name>
<Position>1</Position>
<HoursWorked>251</HoursWorked>
<LastMonthChecked>0310</LastMonthChecked>
</Record>
</Database>
例如,如果将2
传递给函数,我希望它返回字符串“Jane Doe”
。我不熟悉XML解析,因此希望您能提供帮助
谢谢。为此使用XPath
检查此文章:。它有一个与您的情况非常相似的示例。如果您的XML不是很大,您可以使用XPath:
using System;
using System.Xml.Linq;
using System.Xml.XPath;
public class Program
{
static void Main(string[] args)
{
var elements = XDocument.Load("Database.xml")
.XPathSelectElements("//Record[@Number='2']/Name");
foreach (var item in elements)
{
Console.WriteLine(item.Value);
}
}
}
这是一个LINQ语句,它将根据变量searchTerm为您提供名称。数据是否太大,以至于将整个文档加载到
XmlDocument
(然后使用SelectSingleNode()
等)是不切实际的?
using System;
using System.Xml.Linq;
using System.Xml.XPath;
public class Program
{
static void Main(string[] args)
{
var elements = XDocument.Load("Database.xml")
.XPathSelectElements("//Record[@Number='2']/Name");
foreach (var item in elements)
{
Console.WriteLine(item.Value);
}
}
}
Could you try something like this:-
public static string GetName(int EmployeeNumber)
{
XmlDocument doc = new XmlDocument();
doc.Load("Database.xml");
XmlElement rootNode = doc.DocumentElement;
String query ="Record[@Number='"+EmployeeNumber.ToString()+"']/Name";
XmlNode data= rootNode.SelectSingleNode(query);
return data.InnerText;
}
string searchTerm = "2";
var list = from XElement segment in workingXmlDocument.Descendants(wix + "File")
where segment.Attribute("Id").Value.ToString() == searchTerm
select segment.Descendant("Name").Value;