如何从powershell中的多个xml节点项（具有名称空间）列表中仅获取第一个xml节点项

我的xml文件内容（testdata.xml）如下所示

<wd:Report_Data xmlns:wd="urn:com.mycomp.report/Get-Integration-Events">
    <wd:Report_Entry>
        <wd:Integration_Event>SomeInfo - 04/17/2017 11:29:14.061 (Completed)</wd:Integration_Event>
        <wd:Integration_ID>123456789a123</wd:Integration_ID>
        <wd:Integration_Event_Status>Completed</wd:Integration_Event_Status>
        <wd:Actual_Start_Date_and_Time>2017-04-17T11:29:00-07:00</wd:Actual_Start_Date_and_Time>
        <wd:Actual_Completed_Date_and_Time>2017-04-17T11:29:23.085-07:00</wd:Actual_Completed_Date_and_Time>
        <wd:Request_Name>
            SomeInfo - 04/17/2017 11:29:14.061 (Completed)
        </wd:Request_Name>
        <wd:Response_Message>Integration Completed.</wd:Response_Message>
        <wd:referenceID>SomeRefId</wd:referenceID>
    </wd:Report_Entry>
    <wd:Report_Entry>
        <wd:Integration_Event>SomeInfo - 04/17/2017 11:29:14.061 (Completed)</wd:Integration_Event>
        <wd:Integration_ID>234567890b234</wd:Integration_ID>
        <wd:Integration_Event_Status>Completed</wd:Integration_Event_Status>
        <wd:Actual_Start_Date_and_Time>2017-04-17T11:29:00-07:00</wd:Actual_Start_Date_and_Time>
        <wd:Actual_Completed_Date_and_Time>2017-04-17T11:29:23.085-07:00</wd:Actual_Completed_Date_and_Time>
        <wd:Request_Name>
            SomeInfo - 04/17/2017 11:29:14.061 (Completed)
        </wd:Request_Name>
        <wd:Response_Message>Integration Completed.</wd:Response_Message>
        <wd:referenceID>SomeRefId</wd:referenceID>
    </wd:Report_Entry>
    <wd:Report_Entry>
        ............. around 50+ similar entries
    </wd:Report_Entry>
</wd:Report_Data>

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如何使用powershell实现此功能？

$confXml.GetElementsByTagName（“wd:Integration\u Event\u Status”）[0]。#text'

Thank@MathiasR.Jessen还有如何提取第一次出现的标记的所有子元素？

$baseDir = "C:\myfolder"
$configFile = "$baseDir\testdata.xml"
[xml]$confXml = Get-Content $configFile
$eventStatus = $confXml.GetElementsByTagName("wd:Integration_Event_Status").'#text'
Write-Host $eventStatus