假设我有以下 xml,我想获取 id 为 Pkg1
的单个节点的版本属性值,预计为 1.2.3
.
<project>
<nugets id='test'> </nugets>
<packages>
<package id='test1' version='1'/>
<package id='Pkg1' version='1.2.3'/>
<package id='Pkg1Test' version='4.5.6'/>
</packages>
</project>
下面是我的尝试,但是目标节点在 OuterXml
的字段中作为目标节点的字符串:
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlStr);
string path = "project/packages/package[@id='Pkg1']"; // target node has id=Pkg1
var targetNode = xmlDoc.SelectSingleNode(path);
Console.WriteLine($"{targetNode.OuterXml}"); // prints out the target node as string.
这似乎可行:string version = targetN.Attributes["version"].Value
,这是获取属性值的正确方法吗,为什么节点在 targetNode 中.OuterXml
?
最佳答案
这是一个工作代码来获得你所需要的:
private const string str = @"
<project>
<nugets id='test'> </nugets>
<packages>
<package id='test1' version='1'/>
<package id='Pkg1' version='1.2.3'/>
<package id='Pkg1Test' version='4.5.6'/>
</packages>
</project>";
private static void Test()
{
var el = XElement.Parse(str);
var packages = el.Element("packages")?
.Elements("package")
.ToList();
var package = packages?
.FirstOrDefault(x => x.Attribute("id")?.Value == "Pkg1");
var id = package?.Attribute("version")?.Value;
Console.Write(id);
}
关于c# - 使用 C# 查找具有路径和 id 属性值的单个节点,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57258064/