get xelement attribute value

Question

I have an XElement that looks like this:

<User ID="11" Name="Juan Diaz" LoginName="DN1\jdiaz" xmlns="http://schemas.microsoft.com/sharepoint/soap/directory/" /> 

How can I use XML to extract the value of the LoginName attribute? I tried the following, but the q2 "Enumeration yielded no results".

var q2 = from node in el.Descendants("User")     let loginName = node.Attribute(ns + "LoginName")     select new { LoginName = (loginName != null) }; foreach (var node in q2) {     Console.WriteLine("LoginName={0}", node.LoginName); } 

Answer 1

var xml = @"<User ID=""11""                    Name=""Juan Diaz""                    LoginName=""DN1\jdiaz""                    xmlns=""http://schemas.microsoft.com/sharepoint/soap/directory/"" />";  var user = XElement.Parse(xml); var login = user.Attribute("LoginName").Value; // "DN1\jdiaz" 

Answer 2

XmlDocument doc = new XmlDocument(); doc.Load("myFile.xml"); //load your xml file XmlNode user = doc.getElementByTagName("User"); //find node by tag name   string login = user.Attributes["LoginName"] != null ? user.Attributes["LoginName"].Value : "unknown login"; 

The last line of code, where it's setting the string login, the format looks like this...

var variable = condition ? A : B; 

It's basically saying that if condition is true, variable equals A, otherwise variable equals B.