Thank you for replying.
I registered my class extension .dll.s with ESRIRegasm and got an .xml-file with categories and clsid-s in it. This file had extension .ecfg. I renamed it to .xml and packed it with zip. Then I renamed this file to .ecfg. If I look inside the zip arcive the filename extension is .xml. Then I placed it in
C:\Program Files\Common Files\ArcGIS\Server10.1\Configuration\CATID
I can open and look at properties for featureclasses with classextensions In Arccatalog. But when I publish the service with a those featureclass then I get warning
�??Layer is being published with custom class extension�?� and when I publish get other message.
�??Service started with errors�?�, �??The base table definition string [table name] is invalid�?�
I can�??t build project with �??Platform target�?� x64 when there are references in class extensions to 32-bit dll-s such as
Interfaces that class extensions have to implement (IClassExtension).
Regards
Robert