Technical Support | Suprema

public void listUserFromDevice(IntPtr sdkContext, UInt32 deviceID, bool isMasterDevice)        {            IntPtr outUidObjs = IntPtr.Zero;            UInt32 numUserIds = 0;            API.IsAcceptableUserID cbIsAcceptableUserID = null; // we don't need to user id filtering
            Console.WriteLine("Trying to get user list.");            BS2ErrorCode result = (BS2ErrorCode)API.BS2_GetUserList(sdkContext, deviceID, out outUidObjs, out numUserIds, cbIsAcceptableUserID);            if (result == BS2ErrorCode.BS_SDK_SUCCESS)            {                if (numUserIds > 0)                {                    IntPtr curUidObjs = outUidObjs;                    BS2UserBlob[] userBlobs = new BS2UserBlob[USER_PAGE_SIZE];
                    Console.WriteLine("Number of users : ({0}).", numUserIds);                    for (UInt32 idx = 0; idx < numUserIds;)                    {                        UInt32 available = numUserIds - idx;                        if (available > USER_PAGE_SIZE)                        {                            available = USER_PAGE_SIZE;                        }
                        result = (BS2ErrorCode)API.BS2_GetUserDatas(sdkContext, deviceID, curUidObjs, available, userBlobs, (UInt32)BS2UserMaskEnum.ALL);                        if (result == BS2ErrorCode.BS_SDK_SUCCESS)                        {                            for (UInt32 loop = 0; loop < available; ++loop)                            {                                print(sdkContext, userBlobs[loop].user);                                // don't need to release cardObj, FingerObj, FaceObj because we get only BS2User                                if (userBlobs[loop].cardObjs != IntPtr.Zero)                                    API.BS2_ReleaseObject(userBlobs[loop].cardObjs);                                if (userBlobs[loop].fingerObjs != IntPtr.Zero)                                    API.BS2_ReleaseObject(userBlobs[loop].fingerObjs);                                if (userBlobs[loop].faceObjs != IntPtr.Zero)                                    API.BS2_ReleaseObject(userBlobs[loop].faceObjs);                            }
                            idx += available;                            curUidObjs += (int)available * BS2Environment.BS2_USER_ID_SIZE;                        }                        else                        {                            Console.WriteLine("Got error({0}).", result);                            break;                        }                    }
                    API.BS2_ReleaseObject(outUidObjs);                }            }            else            {                Console.WriteLine("Got error({0}).", result);                return;            }        }