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Web Based Applications using the OPC Web Client Web Service Objective Display the values of a Tag Array in a web-page. This example assumes that you have the Software Toolbox TOPServer installed, and the default project "simdemo.opf" is loaded within the TOPServer. Source Code ASP.NET      Try          'create an opc web client web-service object          Dim objOWC As New OPCLabs.EasyOPCDANet.EasyDAWS          'create a vtq object to receive the tag read          'and also make the call to read the tag        Dim objVTQ As OPCLabs.EasyOPCDANet.IVTQNet = objOWC.ReadItem( _            "", _            "SWToolbox.TOPServer", _            "Channel_1.Device_1.TagArray_1")          'check if any errors          If Err.Number = 0 Then            'no errors, so check if the tag read is of type array            If IsArray(objVTQ.Value) Then                'tag is an array, iterate thru that array                For Each value As Object In objVTQ.Value                  'output to the browser                  Response.Write(value.ToString & "<br>")                Next            Else                'not an array                Response.Write("Tag not an array! Value=" & objVTQ.Value)            End If          Else            'error reading the tag            Response.Write("Error reading tag: " & Err.Number)          End If      Catch ex As Exception          'send exception messages to the browser          Response.Write("Error: " & ex.Message)      End Try

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