Question

i am new guy with XML. this is my XML file content:

<Root>
  <COMPANIES>
    <id>1</id>
    <CompanyName>apple</CompanyName>
    <CompanyInCome>450</CompanyInCome>
  </COMPANIES>
  <COMPANIES>
    <id>2</id>
    <CompanyName>MS</CompanyName>
    <CompanyInCome>458</CompanyInCome>
  </COMPANIES>
  <COMPANIES>
    <id>3</id>
    <CompanyName>Evga</CompanyName>
    <CompanyInCome>770</CompanyInCome>
  </COMPANIES>
  <COMPANIES>
    <id>4</id>
    <CompanyName>GF</CompanyName>
    <CompanyInCome>150</CompanyInCome>
  </COMPANIES>
</Root>

here i want to find biggest CompanyInCome node and to show on my webpage. How can i make it?

Answer 1

Using Linq-to-XML, you could write something like:

string input = "....(your XML here).....";

XDocument xmltest = XDocument.Parse(input);

var result = xmltest
                .Descendants("COMPANIES")
                .OrderByDescending(x => Convert.ToInt32(x.Element("CompanyInCome").Value))
                .FirstOrDefault();

This will return the <COMPANIES> node which has the highest numerical value in <CompanyInCome>.

Update: if you want to read your XML from an external file, use this line of code:

XDocument xmltest = XDocument.Load(@"E:\MyXML.xml");

The .Parse() method is used to parse an existing string of XML defined in your code – it does NOT read from disk.