Question

使用VB.net轴运算符（... /。/ @）如何选择/迭代具有特定子字符串的节点。

E.g。

采用这样的XML代码段：

<Route name="Fly from London Heathrow" distance="1192.88" duration="355">
 <IndicativePrice price="163" currency="USD" isFreeTransfer="0"/>
 <Stop name="Surbiton" pos="51.39301,-0.30677" kind="town"/>
 <Stop name="Kingston Upon Thames, Kingston" pos="51.41182,-0.3006" kind="station"/>
 <Stop name="London Heathrow" pos="51.47034,-0.45342" kind="airport" code="LHR"/>
 <Stop name="Barcelona" pos="41.30373,2.07315" kind="airport" code="BCN"/>
 <Stop name="Barcelona" pos="41.38702,2.17004" kind="city"/>
 [SO-point 1]
 <TransitSegment kind="bus" subkind="bus" vehicle="bus" isMajor="0" isImperial="1" ..."></TransitSegment>
 <TransitSegment kind="bus" subkind="bus" vehicle="bus" isMajor="0" isImperial="1" distance="18.4 ..."></TransitSegment>
 <FlightSegment kind="flight" isMajor="1" distance="1146.72" duration="120" sCode="LHR" tCode="BCN"></FlightSegment>
 <TransitSegment kind="train" subkind="train" vehicle="train" isMajor="0" isImperial="0" distance="25.07" duration="25" sName="Aeropuerto de Prat" sPos="41.30426,2.07352" sCode="7172400" tName="Barcelona P.Gracia" tPos="41.38725,2.16866" tCode="7100063" path=".."></TransitSegment>
 [SO-point 2]
</Route>

我可以像这样迭代Stops：

For Each routeStop In route.<ns:Stop>
                Dim nextStop As New r2rSearchResponseRoutes.r2rSearchResponseStops
                nextStop.kind = routeStop.@kind
                nextStop.name = routeStop.@name
                nextStop.code = routeStop.@code
                nextStop.pos = routeStop.@pos

                nextRoute.listOfStops.Add(nextStop)
            Next

如何针对具有子字符串的任何节点进行选择，例如节点名称中的“Segment”如上例所示？如上所示[SO-point 1]至[SO-point 2]

Answer 1

您需要使用LINQ方法来过滤XML节点，例如：

For Each s As XElement In route.Elements().Where(Function(x) x.Name.LocalName.Contains("Segment"))
    Console.WriteLine(s.ToString())
Next

选择包含VB.net轴表示法中的子字符串的XML节点

1 个答案: