Parse XML with dot notation

Parse-XML.ps1

$log = @"
<Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'>
	<System>
		<Provider Name='Service Control Manager' Guid='{555908d1-a6d7-4695-8e1e-26931d2012f4}' EventSourceName='Service Control Manager'/>
		<EventID Qualifiers='16384'>7036</EventID>
		<Version>0</Version>
		<Level>4</Level>
		<Task>0</Task>
		<Opcode>0</Opcode>
		<Keywords>0x8080000000000000</Keywords>
		<TimeCreated SystemTime='2019-01-12T16:00:11.920020600Z'/>
		<EventRecordID>41452</EventRecordID>
		<Correlation/>
		<Execution ProcessID='692' ThreadID='828'/>
		<Channel>System</Channel>
		<Computer>EC2AMAZ-D6OFVS8</Computer>
		<Security/>
	</System>
	<EventData>
		<Data Name='param1'>Device Install Service</Data>
		<Data Name='param2'>running</Data>
		<Binary>44006500760069006300650049006E007300740061006C006C002F0034000000</Binary>
	</EventData>
	<RenderingInfo Culture='en-US'>
		<Message>The Device Install Service service entered the running state.</Message>
		<Level>Information</Level>
		<Task></Task>
		<Opcode></Opcode>
		<Channel></Channel>
		<Provider>Microsoft-Windows-Service Control Manager</Provider>
		<Keywords>
			<Keyword>Classic</Keyword>
		</Keywords>
	</RenderingInfo>
</Event>
"@

[xml]$xml = $log

$xml.Event.RenderingInfo.Message