Click here to Skip to main content
13,445,555 members (35,276 online)
Click here to Skip to main content
Add your own
alternative version


12 bookmarked
Posted 27 Jul 2009

LINQ to XML to retrieve an element value by its attribute

, 27 Jul 2009
Rate this:
Please Sign up or sign in to vote.
Using LINQ to XML to retrieve an element value by its attribute.


This article tells us how to retrieve a value of an element depending on the attribute value.

The Scenario

I have a web site where I need to read some data as static but I want to be able to update it any time, so I decided to read it from an XML file and use LINQ to XML. After some time and a lot of searching here and there, I had a better understanding of the idea and so I decided to share it with every one.

Using the Code

We will make an XML file and a class to get the data from it:

  1. The XML file "Actions.xml":
  2. <?xml version="1.0" encoding="utf-8" ?>
    <Action id="SignIn">1</Action>
    <Action id="SignOut">2</Action>
    <Action id="Open">3</Action>
  3. The class "Actions.cs":
  4. We will make the class constructor the one which gets the data to our variables in the class.

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Xml.Linq;
    public class Actions
        int signIn, signOut, open;
        public int SignIn
            get { return signIn; }
        public Actions()
            XElement xe = XElement.Load(@"C:\Users\ADELOooO\Documents\
            Visual Studio 10\WebSites\LinQReadXML\Actions.xml");
            var x = from a in xe.Elements("Action")
              Where a.Attribute("id").Value == "SignIn"
              select a.Value;
            signIn = int.Parse(x.First().ToString());

    We have used the signin variable as an example above, but you can use it with them all.

  5. The code behind the webpage to call the method is shown here:
  6. using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    public partial class _Default : System.Web.UI.Page 
        protected void Page_Load(object sender, EventArgs e)
        protected void Button1_Click(object sender, EventArgs e)
            Actions a = new Actions();
            TextBox1.Text = a.SignIn.ToString();

Points of Interest

I used VSTS 10 beta to create this project. I hope that you find it helpful.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Dev. Action
Software Developer (Senior)
Egypt Egypt
No Biography provided

You may also be interested in...

Comments and Discussions

GeneralMy vote of 5 Pin
heracles maroudas7-Jul-11 23:58
memberheracles maroudas7-Jul-11 23:58 
Generalhave a nested element f, seems Im wiriting the xmlDocument.Elements("StreetName") incorrect cant get a result Pin
69stephen29-Aug-10 4:13
member69stephen29-Aug-10 4:13 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web04-2016 | 2.8.180314.2 | Last Updated 27 Jul 2009
Article Copyright 2009 by Dev. Action
Everything else Copyright © CodeProject, 1999-2018
Layout: fixed | fluid