使用LINQ检查XML节点的名称和值

Question

I have a C# application where I need to parse XML using LINQ. This is my first LINQ experience that's why I am struggling with basic operations

My XML looks something similar to:

<Main>
  <Data>
     <NodeTypeA>
        <ElementA>23</ElementA>
        <ElementB>24</ElementB>
     </NodeTypeA>
  </Data>
</Main>

So first I want to check the name of the first child of “Data”. In this case it is “NodeTypeA”.

Second I want to read the value of ElementA value. In this example it is “23”

Answer 1

You can do the following:

var firstElement = xml.Descendants("Data").Elements().FirstOrDefault();
if (firstElement != null && firstElement.Name == "NodeTypeA")
{
    var elementAValue = (string)firstElement.Element("ElementA");
}