2.2.1.56.8 PidLidNetShowUrl Property
Type: PtypString ([MS-OXCDATA] section 2.11.1.2)
The PidLidNetShowUrl property ([MS-OXPROPS] section 2.175) specifies the URL to be launched when the user joins the meeting. This property is valid only when the PidLidConferencingType property (section 2.2.1.56.3) has the value 0x00000001 or 0x00000002.
For meetings that have 0x00000001 as the value of the PidLidConferencingType property, the URL is supplied by a user. For meetings that have 0x00000002 as the value of the PidLidConferencingType property, the URL is generated as follows:
For each blind carbon copy (Bcc) recipient of a Meeting Request object, open the associated folder of the Calendar folder in the recipient's (1) mailbox.
Find the message for which the PidTagMessageClass property ([MS-OXCMSG] section 2.2.1.3) has a value of EXCH_CONFERENCE. If the message is not found, move on to the next Bcc recipient. If the message is found, open it and get its PidTagLocation property ([MS-OXOCNTC] section 2.2.1.10.5).
Append the value of the PidLidGlobalObjectId property (section 2.2.1.27) of the Meeting object encoded with base64 encoding.
Append the string "&p=" followed by the value of the PidLidOnlinePassword property (section 2.2.1.56.9).
Finally, convert the string to Unicode.
If there are multiple Exchange Conferencing mailboxes in the Bcc field, the value that is calculated by using the last mailbox is used.