Public Function Refresh2( _
   ByVal sourceMode As OPCDATASOURCE, _
   ByVal transactionID As Integer, _
   ByRef cancelID As Integer _
) As Integer

public int Refresh2( 
   OPCDATASOURCE sourceMode,
   int transactionID,
   out int cancelID
)

Parameters

sourceMode

IN: Data source CACHE or DEVICE. If the DEVICE, then all active items in the CACHE are refreshed from the device BEFORE the callback

transactionID

IN: The Client generated transaction ID. This is included in the 'completion' information provided to the OnDataChange.

cancelID

Place to return a Server generated ID to be used in case the operation needs to be canceled.

Return Value

Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2016, .NET 4.x

See Also