Question

我有一个简单的xml，其中包含多个InterimConditionEvent ID。我想获得具有最高价值的InterimConditionEvent ID。

对于我的xml，我想获得<InterimConditionEvent ID="160850209">因为它具有最高价值。

我如何在VB.Net中做到这一点？

我的xml

<Integration xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:tsg="http://tsgweb.com" xmlns:IXML="http://tsgweb.com" xmlns:CMCodeQueryHelper="urn:CMCodeQueryHelper">
<Case InternalID="1617095448" ID="12131576" xmlns:user="http://tylertechnologies.com">
    <InterimConditionEvent ID="160850198">
        <OrderDate>08/14/2015</OrderDate>
        <ExpirationDate>08/14/2015</ExpirationDate>
        <TimestampCreate>08/14/2015 11:01:57:700</TimestampCreate>
        <TimestampChange>08/14/2015 11:21:51:623</TimestampChange>
        <Deleted>true</Deleted>
        <InterimCondition>
            <ConditionType Word="DOMNC">Domestic No Contact</ConditionType>
            <EffectiveDate>8/14/2015</EffectiveDate>
            <EndDate>8/21/2015</EndDate>
        </InterimCondition>
    </InterimConditionEvent>
    <InterimConditionEvent ID="160850209">
        <OrderDate>08/14/2015</OrderDate>
        <ExpirationDate>08/14/2015</ExpirationDate>
        <TimestampCreate>08/14/2015 11:22:28:900</TimestampCreate>
        <TimestampChange>08/14/2015 11:31:15:890</TimestampChange>
        <Deleted>true</Deleted>
        <InterimCondition>
            <ConditionType Word="DOMNC">Domestic No Contact</ConditionType>
            <EffectiveDate>8/14/2015</EffectiveDate>
            <EndDate>8/14/2015</EndDate>
        </InterimCondition>
    </InterimConditionEvent>
</Case>

在我的vb.net代码中，我使用的是最后一个位置，但我意识到这可能会返回没有最新日期或时间的最后位置。这是我的vb.net最后一个位置代码，我想更改为使用具有最高值的ID。

strOrderEndDate = objXmlCaseDoc
    .DocumentElement
    .SelectSingleNode("Case/InterimConditionEvent[position()=last()]/InterimCondition[ConditionType/@Word='DOMNC']/EndDate").InnerText

Answer 1

Please try Linq to XML:

Dim xDoc As XElement = XElement.Load("file.xml")

Dim conditionEvents = xDoc.Element("Case").Elements("InterimConditionEvent")

Dim maxId As String = conditionEvents.Attributes("ID").Max(Function(attr) attr.Value)

Dim eventNode As XElement = (From elem In conditionEvents
                             Where elem.Attribute("ID").Value = maxId
                             Select elem).Single()

如何从XML获取具有最高值的ID？

1 个答案: