ASP.NET , OPC, DataSocket

[MadSeb]

Hi,

I'm doing an ASP.NET web site which reads some variables from a local OPC  server and displays the value on a gauge ....

First Question:

One interesting thing is that when developing web sites, the Visual Studio Toolbox does not have a "Data Socket" control..........why ????

Second Question:

Bellow is my code ..... Is this the general accepted way of writing such an application ?????

I just want to check and make sure ...

Partial

Class MyForm Inherits System.Web.UI.Page Dim T_DS As NationalInstruments.Net.DataSocket = New NationalInstruments.Net.DataSocket() Protected Sub AutoRefresh1_Refresh(ByVal sender As Object, ByVal e As NationalInstruments.UI.RefreshEventArgs) Handles AutoRefresh1.Refresh

TG.Value = T1_WS_DS.Data.Value

REM TG Is a gauge control

REM TG is registered in the update items of the autorefresh control

End Sub Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

T_DS.Url =

"opc://localhost/National Instruments.OPCLookoutDrivers/DL1.T"

T_DS.Connect()

End Sub

End

Class

[Doiron]

Hello Sebastian,

It looks like the answer to your first question can be found in this previous discussion.

For your second question, as with all programming languages there are a number of ways to perform most functions.

Specifically in regards to Measurement Studio and Datasockets, I would recommend looking at the Datasocket examples for reader and write that we have provided, this will provide you with one successful implementation of datasockets.

Thanks for posting!