Trying to get all shapes from a slide with C#

[S.Creek]

Hi,

i am writing a C# automation program that needs to identify all shapes
on a specific slide,
The shapes can be identified by a tag .? or by setting a type.?
(Possible?)
I appreciate if someone can refer me or to put some C# code examples
that demonstrate that.

The main issues I face are:

1. How to add a tag to a picture i put in the presentation.
2. How to loop all shapes on the slide and identify who are the
pictures carries the tag i assigned earlier.

Thank you

S.Creek