Hi all,
I am developing OPC Client in VB.net. I have developed the code and reading OPC Items on Sampling as well as event based (OnDataChange). When I am working with local machine then my code works fine with both Sampling as well as OnDataChange, but when I am trying to read data from Remote OPC Server then Sampling works fine but I am not able fetch data on event based process. I am able to connect to the OPC Server but when i am adding subscription to it then i am getting error.

HRESULT : 0x80040202.
Public NetCredentials As New System.Net.NetworkCredential
Dim connectdt As Opc.ConnectData
Public WithEvents Subscription As ISubscription = Nothing
Public State As New Opc.Da.SubscriptionState

State = New Opc.Da.SubscriptionState

State.Active = True
State.UpdateRate = 500
Subscription = OpcServer.CreateSubscription(State)
results = Subscription.AddItems(Items)
AddHandler Subscription.DataChanged, New DataChangedEventHandler(AddressOf OnDataChange) ' Here is the error.

I appreciate if anybody suggests some solution.

Thanks in advance.