is it possible to build a topology and add rules to it in ArcGIS Pro SDK? I want to create a button that will create a topology from a selected layer in the Content Pane.
No its not possible at this time, the topology API within the Pro SDK hasn't been completed yet.
As a workaround you can call existing GP tools, through the Pro SDK, to create a topology, add feature classes and rules etc.
These can be called through the Geoprocessing.ExecuteToolAsync method.
Thanks Jean, that is what I ended up doing
Retrieving data ...