System.Runtime.InteropServices.ComTypes.ADVF public enum ADVF Documentation ADVF_DATAONSTOP = 64 ADVF_NODATA = 1 ADVF_ONLYONCE = 4 ADVF_PRIMEFIRST = 2 ADVFCACHE_FORCEBUILTIN = 16 ADVFCACHE_NOHANDLER = 8 ADVFCACHE_ONSAVE = 32