When a SFtpSession object is initialized, a negotiation between the client and the server is made to agree on a version of the SFtp protocol to use by both parties. The value of this property shows the result.
Most servers implement version 3 of the protocol. The client implements version 3 and version 6 of the protocol. Versions 4 and 5 are not supported.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2