Question

I need to merge XMLnodes elements based on the value of attribute(id) and generate the result to a list using C#

This is the original XML file:

   <profiles>
    <profile id="1" >
          <name>John</name>
          <age>23</age>
          <sex>male</sex>
    </profile >

    <profile id="2" >
          <name>Mark</name>
          <age>60</age>
    </profile >
    <profile id="2" >
          <sex>male</sex>
    </profile >
 </profiles>

and I need to work on it as it was:

       <profiles>
    <profile id="1" >
          <name>John</name>
          <age>23</age>
          <sex>male</sex>
    </profile >

    <profile id="2" >
          <name>Mark</name>
          <age>60</age>        
          <sex>male</sex>
    </profile >
 </profiles>

here is my trial but it returns no thing

var employee = from emp in fileDoc.Descendants("profile")
               group emp by (string) emp.Attribute("id")
               into emps 
               select new Data
               {
                    ID =emps.Last().Attribute("id") != null ? emps.Last().Attribute("id").Value: "",
                    ProfileName =emps.Elements("name") != null? emps.Elements("name").Last().Value: "",
                    Sex=emps.Elements("sex") != null? emps.Elements("sex").Last().Value: ""
               };

Answer 1

var xDoc = XDocument.Parse(xml); //or XDocument.Load(fileName)

var newXDoc = new XElement("profiles",
                                xDoc.Descendants("profile")
                                .GroupBy(p => p.Attribute("id").Value)
                                .Select(p => new XElement("profile", 
                                                    new XAttribute(p.First().Attribute("id")), 
                                                    p.Elements())));

string newxml = newXDoc.ToString();