XML 태그가 존재하지 않습니까?

Question

C#에서 xml 태그가 존재하는지 확인하는 방법은 무엇입니까? 내 XML을

<name> 
    <firstname>John</firstname> 
    <lastname>cena</lastname> 
    <job>Administrator</job> 
    <location>sunnyvale</location> 
    <age>19</age> 
</name> 

<name> 
    <firstname>mark</firstname> 
    <job>Agent</job> 
    <location>Bangalore</location> 
    <age>22</age> 
</name> 

LASTNAME 태그가 C#으로 확인하는 방법을 표시 존재하지 않습니다?

Answer 1

string xml = @" 
    <name> 
     <firstname>mark</firstname> 
     <job>Agent</job> 
     <location>Bangalore</location> 
     <age>22</age> 
    </name>"; 

var doc = XDocument.Parse(xml); 
bool isLastNameExists = doc.Descendants("name").Elements("lastname").Any();