Hi, Thank You for your reply.
We are using application for people who aren't GIS experts, they will just use available layers for their job. That's why I think it would be best solution to use ArcGIS Mobile because of that. Field workers in a field, will make use of GIS in way of adding objects into maps, filtering suitable layers (e.g. for electrical engineers map of electrical network, cables above and under the ground, locations of convertors and so on, they will be able to make revisions, repairs and report them via our app and graphically via ArcGIS). ArcGIS Mobile should be a part of an several menu, but in this time it is still in development vision, so I can't say anything more about this. I have read ArcGIS SDK development manual, and I have read from that, that ArcGIS is a .NET Component, which our application is not able to host. So I think, question about incorporating ArcGIS in our application is solved 😞 there is no way...