So what is your question? 
If you use the Set.Differnce node you can check which Elements
are not taken into account by the node All Elements In Active View.
All Elements In View(s) is a custom node and may work a little different than
the OOTB node.
both are same or not? if yes why its showing diff
7171 and 7208
No and yes. One is a OOTB node and ones is from a package.
Maybe the one from the package was made some day because the OOTB one
didn’t exist yet.
The one from the package might work slightly different.
maybe these ones is project browser, properties, as these are views as well, try get the names from these…
which one is new?
All Elements In Active View = Out of the Box Node (OOTB).
All Elements In View(s) = Data-Shapes package.
Can’t tell you which one is new(er) - if there is one.
Maybe it is best to work with the OOTB one for maintenance purposes.
i want all element in active view (1 which is active ) which node should i use All Elements In Active view?
All Elements In View(s) is for views right? not 1 view
View(S) suggest one or more. But you can always just try for yourself.
Unless you know that a custom node delivers something different to one with the same name/implied function out of the box, you should always use the node that comes with Dynamo. The community has limited ability to advise how custom nodes work, as this is designed by the package manager themselves.
There are likely additional elements that Mostafa has allowed to be picked up that the Dynamo team has not in their implementation behind the scenes, such as system elements that you would probably not want to interact with using Dynamo.
Thanks Gavin