Hello,

the question is more about EasyXXClient object lifetime practices, and not (as titled) about "connections", because the connections are handled commonly for multiple EasyXXClient objects (shared), and thus not directly related to the lifetime of EasyXXClient objects.

I suggest the following rule:

If you can prevent it, do not create very high numbers of EasyXXClient objects in total (I mean hundreds or thousands ) or create them with very high frequency (let's say 10 per second or more). But having a handful of EasyXXClient objects, or maybe 50 or 100 or so, or having just one, is all OK.

As a less important note, if you create an EasyXXClient object and no longer need it, you do not have necessarily call the IDisposable.Dispose (which is what the 'using' block does at the end), even though the documented contract to IDisposable tells you that it is mandatory.

Best regards