使用XElement的XML数据访问不知何故没有显示值-Schema

Question

请帮我提供任何建议，因为我还不知道XDocument XElement是如何与Schemas一起工作的。。。

实际上，我只想解析内容，而不想验证XML——只想读取数据：

这是XML:

<?xml version="1.0" encoding="utf-8"?><gpx creator="Garmin Desktop App" version="1.1" 
xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd 
http://www.garmin.com/xmlschemas/WaypointExtension/v1 http://www8.garmin.com/xmlschemas/WaypointExtensionv1.xsd 
http://www.garmin.com/xmlschemas/TrackPointExtension/v1 http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd 
http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd 
http://www.garmin.com/xmlschemas/ActivityExtension/v1 http://www8.garmin.com/xmlschemas/ActivityExtensionv1.xsd 
http://www.garmin.com/xmlschemas/AdventuresExtensions/v1 http://www8.garmin.com/xmlschemas/AdventuresExtensionv1.xsd 
http://www.garmin.com/xmlschemas/PressureExtension/v1 http://www.garmin.com/xmlschemas/PressureExtensionv1.xsd 
http://www.garmin.com/xmlschemas/TripExtensions/v1 http://www.garmin.com/xmlschemas/TripExtensionsv1.xsd 
http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1 http://www.garmin.com/xmlschemas/TripMetaDataExtensionsv1.xsd 
http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1 http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensionsv1.xsd 
http://www.garmin.com/xmlschemas/CreationTimeExtension/v1 http://www.garmin.com/xmlschemas/CreationTimeExtensionsv1.xsd 
http://www.garmin.com/xmlschemas/AccelerationExtension/v1 http://www.garmin.com/xmlschemas/AccelerationExtensionv1.xsd 
http://www.garmin.com/xmlschemas/PowerExtension/v1 http://www.garmin.com/xmlschemas/PowerExtensionv1.xsd 
http://www.garmin.com/xmlschemas/VideoExtension/v1 http://www.garmin.com/xmlschemas/VideoExtensionv1.xsd" 
xmlns="http://www.topografix.com/GPX/1/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:wptx1="http://www.garmin.com/xmlschemas/WaypointExtension/v1" xmlns:gpxtrx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" 
xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" 
xmlns:trp="http://www.garmin.com/xmlschemas/TripExtensions/v1" xmlns:adv="http://www.garmin.com/xmlschemas/AdventuresExtensions/v1" 
xmlns:prs="http://www.garmin.com/xmlschemas/PressureExtension/v1" xmlns:tmd="http://www.garmin.com/xmlschemas/TripMetaDataExtensions/v1" 
xmlns:vptm="http://www.garmin.com/xmlschemas/ViaPointTransportationModeExtensions/v1" xmlns:ctx="http://www.garmin.com/xmlschemas/CreationTimeExtension/v1" 
xmlns:gpxacc="http://www.garmin.com/xmlschemas/AccelerationExtension/v1" xmlns:gpxpx="http://www.garmin.com/xmlschemas/PowerExtension/v1" 
xmlns:vidx1="http://www.garmin.com/xmlschemas/VideoExtension/v1">

<metadata>
<link href="http://www.garmin.com">
<text>Garmin International</text>
</link>
<time>2018-03-14T18:43:36Z</time>
<bounds maxlat="45.255227560139" maxlon="28.8452932373" minlat="43.22223" minlon="14.26041412592" />
</metadata>

<trk>
<name>TEST</name>
<extensions>
<gpxx:TrackExtension>
<gpxx:DisplayColor>Red</gpxx:DisplayColor>
</gpxx:TrackExtension>
</extensions>
<trkseg>
<trkpt lat="44.177107578143477" lon="16.26372094">
<ele>0</ele>
<time>2016-12-27T04:59:20Z</time>
</trkpt>
<trkpt lat="44.177290974184871" lon="16.2639852379">
<ele>0</ele>
<time>2016-12-28T04:59:40Z</time>
</trkpt>
<trkpt lat="44.178708018735051" lon="16.261576104">
<ele>0</ele>
<time>2016-12-29T05:00:00Z</time>
</trkpt>
<trkpt lat="44.179137004539371" lon="16.26883971">
<ele>0</ele>
<time>2016-12-30T05:00:20Z</time>
</trkpt>
</trkseg>
</trk>

</gpx>

---

但是：我可以加载XElement，但foreach没有显示任何内容。我做错了什么？

var xelem = XElement.Load(whateverxml);
foreach (XElement ele in xelem.Descendants("time"))
Debug.Log(ele.Value);

Answer 1

而不是

foreach (XElement ele in xelem.Descendants("time"))

请使用以下代码。

XName xName = XName.Get("time", "http://www.topografix.com/GPX/1/1");
foreach (XElement ele in xelem.Descendants(xName))

或

foreach (XElement ele in xelem.Descendants().Where(a => a.Name.LocalName == "time"))

然后，它就会起作用。