vb.net – Linq to XML for KML？

我是一个LINQ to XML新手,也是一个KML新手;所以忍受我.

我的目标是从KML文件中提取单个地标.我的KML如此开始：

<?xml version="1.0" encoding="utf-8"?>
<Document xmlns="http://earth.google.com/kml/2.0">
  <name>Concessions</name>
  <visibility>1</visibility>
  <Folder>
    <visibility>1</visibility>
    <Placemark>
      <name>IN920211</name>
      <Style>
        <polyStyle>
          <color>80000000</color>
        </polyStyle>
      </Style>
      <polygon>
        <altitudeMode>relativetoGround</altitudeMode>
        <outerBoundaryIs>
          <LinearRing>
            <coordinates>11.728374,1.976421,0 11.732967,1.965322,0 11.737225,1.953161,0 11.635858,1.940812,0 11.658102,1.976874,0 11.728374,0 </coordinates>
          </LinearRing>
        </outerBoundaryIs>
      </polygon>
    </Placemark>
    <Placemark>
    ...

这是我得到的：

Dim Kml As XDocument = XDocument.Load(Server.MapPath("../kmlimport/ga.kml"))
    Dim Placemarks = From Placemark In Kml.Descendants("Placemark") _
         Select Name = Placemark.Element("Name").Value

到目前为止没有好处 – Kml.Descendants(“Placemark”)给了我一个空的枚举.文档已正确加载 – 因为KML.Descendants包含每个节点.对于它的价值,这些查询也是空的：

Dim foo = Kml.Descendants("Document") 
Dim foo = Kml.Descendants("Folder")

有人能指出我正确的方向吗？从优秀的Linq到XML教程的链接的奖励点 – 我在网上找到的那些在非常简单的场景中停止.

这适用于C#：

XDocument doc = XDocument.Load(@"TheFile.kml");

var q = doc.Descendants().Where(x => x.Name.LocalName == "Placemark");