namespace ExampleCodeSnippets
{
 public class ReadXmlExample
 {
 /// <summary>
 /// Creates an enumeration of <see cref="GeoAPI.Geometries.Coordinate"/>s from an xml string
 /// </summary>
 /// <param name="factory"></param>
 /// <param name="xml">the xml string</param>
 /// <returns>Coordinates</returns>
 public static System.Collections.Generic.IEnumerable<GeoAPI.Geometries.IGeometry> PointsFromXml(
 GeoAPI.Geometries.IGeometryFactory factory,
 System.IO.Stream xml)
 {
 foreach (var coordinate in CoordinatesFromXml(xml))
 yield return factory.CreatePoint(coordinate);
 }

 /// <summary>
 /// Creates an enumeration of <see cref="GeoAPI.Geometries.Coordinate"/>s from an xml string
 /// </summary>
 /// <param name="xml">the xml string</param>
 /// <returns>Coordinates</returns>
 public static System.Collections.Generic.IEnumerable<GeoAPI.Geometries.Coordinate> CoordinatesFromXml(System.IO.Stream xml)
 {
 var reader = System.Xml.XmlReader.Create(xml);
 var doc = System.Xml.Linq.XDocument.Load(reader);
 if (doc.Root == null) yield break;

 var ptsName = System.Xml.Linq.XName.Get("Points");
 var ptName = System.Xml.Linq.XName.Get("Point");
 var xName = System.Xml.Linq.XName.Get("X");
 var yName = System.Xml.Linq.XName.Get("Y");

 foreach (var ptsElement in doc.Root.Elements(ptsName))
 {
 foreach (var ptElement in ptsElement.Elements(ptName))
 {

 var element = ptElement.Element(xName);
 if (element == null || element.IsEmpty) continue;
 var x = double.Parse(element.Value,
 System.Globalization.NumberFormatInfo.InvariantInfo);

 element = ptElement.Element(yName);
 if (element == null || element.IsEmpty) continue;
 var y = double.Parse(element.Value,
 System.Globalization.NumberFormatInfo.InvariantInfo);

 yield return new GeoAPI.Geometries.Coordinate(x, y);
 }
 }
 }
 
 [NUnit.Framework.Test]
 public void TestXml1()
 {
 var xml = @"<?xml version=""1.0"" encoding=""utf-8"" ?>
<root>
 <Points>
 <Point>
 <X>13457786.5961983</X>
 <Y>1629064.58490612</Y>
 </Point>
 </Points>
</root>";
 var xmlFileName = System.IO.Path.ChangeExtension(System.IO.Path.GetTempFileName(), "xml");
 
 using (var sw = new System.IO.StreamWriter(System.IO.File.OpenWrite(xmlFileName)))
 sw.Write(xml);

 var factory = new NetTopologySuite.Geometries.GeometryFactory();

 SharpMap.Data.Providers.GeometryProvider p = null;
 using (var fs = System.IO.File.OpenRead(xmlFileName))
 {
 p = new SharpMap.Data.Providers.GeometryProvider(PointsFromXml(factory, fs));
 NUnit.Framework.Assert.IsNotNull(p);
 NUnit.Framework.Assert.AreEqual(1, p.Geometries.Count);
 }

 System.IO.File.Delete(xmlFileName);
 }
 }
}