Whats the main difference between Add-Type and [Reflection.Assembly]::LoadFrom($DLL.FullName) for example

Question

Hello
I have a query please, if someone can help answer it
I am just not clear on when to use which method and if they need to be used together some of the time or all of the time.
Is it true to say the answer to the above is you use Add-Type when the DLL containing the type has already been loaded into memory but not yet scope of the script (e.g. like the 'using' statement
in C#)
if the DLL or its manifest is not in memory then you need to firs to load into memory via
 [Reflection.Assembly]::LoadFrom($DLL.FullName) 
for example?
But if that is the case do you not then need to use Add-Type once LoadFrom has loaded into memory to get the members of the type?
Thank you
AAnotherUser__
AAnotherUser__

Answer 1

This is a recent thread with some discussion of the differences - between using and Load/Add-Type.
http://social.technet.microsoft.com/Forums/windowsserver/en-US/9fe4c708-c98e-432e-a4e1-4a8e80250c18/how-do-i-loadreference-assemblies-in-powershell?forum=ITCG
 Load and Add-Type are basically the same thing, and once the
assembly's been loaded in memory it's available, so there's no using equivalent.
I hope this post has helped!