Read xml from URL

Question

This is what I have so far. I am trying to just read the XML from the URL and just get for example temperature, humidity....etc.... But every time I try something else it gives me an error. I want to retrieve the information and put it in a label.

namespace WindowsFormsApplication1 {
    public partial class Form1: Form {
        public Form1() {
            InitializeComponent();
        }
        private void btnSubmit_Click(object sender, EventArgs e) {
            String zip = txtZip.Text;
            XmlDocument weatherURL = new XmlDocument();
            weatherURL.Load("http://api.wunderground.com/api/"
            your_key "/conditions/q/" + zip + ".xml");
            foreach(XmlNode nodeselect in weatherURL.SelectNodes("response/current_observation"));
        }
    }
}

Show an example of how the XML looks like and what precise information you are trying to parse from it. — Darin Dimitrov, Feb 15 '13 at 22:09
"it gives me an error" is never enough information - see http://tinyurl.com/so-list — Jon Skeet, Feb 15 '13 at 22:14
0.1http://www.wunderground.com/weather/api/d/terms.htmlPSTAmerica/Los_Angeles-0800Mostly Cloudy72 F (22.2 C) — locoss, Feb 16 '13 at 00:28

score 16 · Accepted Answer · edited Feb 18 '13 at 00:53

It took me a bit of trial and error but I've got it. In C# make sure you are using - using System.Xml;

Here is the code using wunderground API. In order for this to work make sure you sign up for a key other wise it will not work. Where is say this your_key that is where you put in your key. It should look like something like this. I used a button and three labels to display the information.

namespace wfats2

{

  public partial class Form1 : Form

{

 public Form1()

        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            XmlDocument doc1 = new XmlDocument();
            doc1.Load("http://api.wunderground.com/api/your_key/conditions/q/92135.xml");
            XmlElement root = doc1.DocumentElement;
            XmlNodeList nodes = root.SelectNodes("/response/current_observation");

            foreach (XmlNode node in nodes)
            {
                string tempf = node["temp_f"].InnerText;
                string tempc = node["temp_c"].InnerText;
                string feels = node["feelslike_f"].InnerText;

                label2.Text = tempf;
                label4.Text = tempc;
                label6.Text = feels;
            }



        }
    }
}

When you press the button you will get the information displayed in the labels assign. I am still experimenting and you are able to have some sort of refresh every so often instead of pressing the button every time to get an update.

score 0 · Answer 2 · answered Feb 15 '13 at 22:35

0

First off yeah you need to give more information in your question but off hand I can see that you have "your_key" inside of your URL. You are probably needing to replace that with your API key for this to work.

answered Feb 15 '13 at 22:35

Buddy Wagner

13
5

1

I have a key but do not know which parameter to use to get certain elements. (did not want to put my key out for everybody to use) – locoss Feb 15 '13 at 23:39
foreach (XmlNode nodeselect in weatherURL.SelectNodes("response/current_observation")); doesn't do anything else. What error are you getting, and what are you trying to do? Supply a sample of the xml that you are getting and what fields you want. – Buddy Wagner Feb 15 '13 at 23:44

Read xml from URL

2 Answers2

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