LINQ to XML: Find an Element with a Specific Attribute

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VB

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LINQ

I am trying to query a large xml file for a specific element based on an attribute of that element but I have been unsuccessful. I have searched google and all examples I have found don't work. Here is the xml:

<?xml version="1.0" encoding="utf-8"?>
    <OfflineSyncPackage MinimumClientVersion="5.8.0.2678" ProtocolVersion="1.0" PackageId="7e79700f-c2b3-413d-8748-cff81e1f35ee" SourceId="9c3290b2-1be0-4631-9064-bfc27bedfca0" CreationDate="2013-02-12T02:12:25Z" PackageVersion="1.1" xmlns="http://schemas.microsoft.com/msus/2004/02/OfflineSync">
        <Updates>
            <Update CreationDate="2013-02-12T18:00:00Z" DefaultLanguage="en" UpdateId="6e03d226-b005-4be7-8254-7c1760886bfd" RevisionNumber="202" RevisionId="7066195" IsLeaf="true" IsBundle="true">
                <Categories>
                    <Category Type="Company" Id="56309036-4c77-4dd9-951a-99ee9c246a94" />
                    <Category Type="Product" Id="2ee2ad83-828c-4405-9479-544d767993fc" />
                    <Category Type="ProductFamily" Id="6964aab4-c5b5-43bd-a17d-ffb4346a8e1d" />
                    <Category Type="UpdateClassification" Id="0fa1201d-4330-4fa8-8ae9-b877473b6441" />
                </Categories>
                <Prerequisites>
                    <UpdateId Id="f8c1d184-7116-498a-903e-25b17eb66bac" />
                    <UpdateId Id="59653007-e2e9-4f71-8525-2ff588527978" />
                    <UpdateId Id="0fa1201d-4330-4fa8-8ae9-b877473b6441" />
                    <UpdateId Id="2ee2ad83-828c-4405-9479-544d767993fc" />
                </Prerequisites>
            </Update>		<FileLocations>
			<FileLocation Id="ic+1hdm66VRYaIx8YMt4g7LOLQI=" Url="http://download.windowsupdate.com/msdownload/update/software/secu/2012/06/windowsxp-kb2719985-x86-deu_89cfb585d9bae95458688c7c60cb7883b2ce2d02.exe" />
			<FileLocation Id="qfvhxK9IA0F0B9yDv4iGZiO0+gE=" Url="http://download.windowsupdate.com/msdownload/update/software/secu/2012/06/msxml6-kb2721693-deu-amd64_a9fbe1c4af4803417407dc83bf88866623b4fa01.exe" />
			<FileLocation Id="IFHmvpPr8+bE3nqI1X36KXpRu+Y=" Url="http://www.download.windowsupdate.com/msdownload/update/v3-19990518/cabpool/windows2000-kb890175-x86-nor_2051e6be93ebf3e6c4de7a88d57dfa297a51bbe6.exe" />
			<FileLocation Id="oEiOLerAhNoywsOu9DFwVBsYFo0=" Url="http://www.download.windowsupdate.com/msdownload/update/v3-19990518/cabpool/q318138_x86_d7b7e449a8d9dc6bb707d52ce0bfcdd70d854624.exe" />
		</FileLocations>
	</OfflineSyncPackage>

Here is my code block that doesn't work:

Dim root As XElement = XElement.Load(sPackageFile)
        Dim address As IEnumerable(Of XElement) = From el In root...<Update>
                                                  Where el.@UpdateId = pID
                                                  Select el

        For Each el As XElement In address
            sPatchId = el.Attribute("UpdateId")
        Next

Any help is appreciated.