Best method to find Exchange Server version for use with Exchange Web Services Managed API?

Hello,

I am attempting to write a method to find the Exchange Server version an Exchange Server I'm connecting to with EWS.

It is clear that reading the contents of a response XML to an EWS request contains this info, as described here.

I'm curious if I must test and error handle or if there's another "less invasive" method to find the Exchange version.

How do I find the version of an Exchange Server I am attempting to access with EWS so that I can set it for EWS managed API activity?

I am currently using the following, but I can't imagine this is the most efficient way?

foreach (ExchangeVersion exchver in Enum.GetValues(typeof(ExchangeVersion)))
{
	//Console.WriteLine(exchver.ToString());
	try
	{
		ExchangeService service = new ExchangeService(exchver);
		//Do stuff here
	}
	catch (Exception e)
	{
		Console.WriteLine("Server is not " + exchver +". Trying next ExchangeVersion.");
	}
}

Any assistance is appreciated.

Thanks,

Matt