what is the simplest way to parse the lat and long out of the following xml fragment. There is no namespace etc.
It is in a string variable. not a stream.
<poi>
<city>stockholm</city>
<country>sweden</country>
<gpoint>
<lat>51.1</lat>
<lng>67.98</lng>
</gpoint>
</poi>
everything I have read so far is waaaaay too complex for what should be a simple task e.g. Link
I've been looking at the above link
Surely there is a simpler way to do this in .net?
Using Linq for XML:
XDocument doc= XDocument.Parse("<poi><city>stockholm</city><country>sweden</country><gpoint><lat>51.1</lat><lng>67.98</lng></gpoint></poi>");
var points=doc.Descendants("gpoint");
foreach (XElement current in points)
{
Console.WriteLine(current.Element("lat").Value);
Console.WriteLine(current.Element("lng").Value);
}
Console.ReadKey();
using System.IO;
using System.Xml;
using System.Xml.XPath;
. . .
string xml = @"<poi>
<city>stockholm</city>
<country>sweden</countr>
<gpoint>
<lat>51.1</lat>
<lng>67.98</lng>
</gpoint>
</poi>";
XmlReaderSettings set = new XmlReaderSettings();
set.ConformanceLevel = ConformanceLevel.Fragment;
XPathDocument doc =
new XPathDocument(XmlReader.Create(new StringReader(xml), set));
XPathNavigator nav = doc.CreateNavigator();
Console.WriteLine(nav.SelectSingleNode("/poi/gpoint/lat"));
Console.WriteLine(nav.SelectSingleNode("/poi/gpoint/lng"));
You could of course use xpath SelectSingleNode to select the <gpoint> element into a variable.
Even simpler than Mitch Wheat's answer, since the fragment in question is a well-formed XML document:
using System.Xml;
using System.IO;
...
string xml = @"<poi>
<city>stockholm</city>
<country>sweden</country>
<gpoint>
<lat>51.1</lat>
<lng>67.98</lng>
</gpoint>
</poi>";
XmlDocument d = new XmlDocument();
d.Load(new StringReader(xml));
Console.WriteLine(d.SelectSingleNode("/poi/gpoint/lat").InnerText);
Console.WriteLine(d.SelectSingleNode("/poi/gpoint/lng").InnerText);
new StringReader and just use d.LoadXml(xml)If you can use LINQ for XML you can read those two values straight forward like this:
var doc = XDocument.Parse("...");
var point = doc.Element("poi").Element("gpoint");
Console.WriteLine("Lat: {0}, Lng: {1}",
point.Element("lat").Value,
point.Element("lng").Value);
If you need them as double you have to convert them:
double lat = Convert.ToDouble(point.Element("lat").Value,
CultureInfo.InvariantCulture);
Don't forget to specify a culture that uses a dot for fractions. Otherwise this would yield 511.0 as latitude.
Use XElement.Parse(string text) method to do this.
Example:
string xmlString = @"<poi>
<city>stockholm</city>
<country>sweden</country>
<gpoint>
<lat>51.1</lat>
<lng>67.98</lng>
</gpoint>
</poi>";
try
{
XElement x = XElement.Parse(xmlString);
var latLng = x.Element("gpoint");
Console.WriteLine(latLng.Element("lat").Value);
Console.WriteLine(latLng.Element("lng").Value);
}
catch
{
}
Hope this helps!
