How connect to LSEG Workspace using .NET API?

eugen_p

Hi,

We support our internal .NET application written in VB.NET which currently uses Refinitiv Eikon version 4.0. Because of migration to LSEG Workspace from Eikon we try to modify our application which is using just a few functions from Eikon API:

EikonDesktopDataAPI.Initialize() + EikonDesktopDataAPI.Status
EikonDesktopDataAPI.CreateAdxForexModule().FxCalcPeriod
EikonDesktopDataAPI.CreateAdxForexModule().AdFxSwpTpSwp

EikonDesktopDataAPI is automatically available in the installation folder after installation of Refinitiv Eikon. But installation folder of LSEG Workspace doesn’t contain any prepared library with APIs and I think we should download it separately.

We have checked the samples from LSEG Data Library for .NET Examples from the link https://developers.lseg.com/en/article-catalog/article/migrating-eikon-dotnet-api-calls-to-workspace-dotnet but we cannot understand all points in comparing to EikonDesktopDataAPI.

For example, with Eikon we simply use the function EikonDesktopDataAPI.Initialize() in Visual Basic .NET for connection to Eikon:

Public Function ConnectToEikon(Optional ByRef sErrorInfo As String = "") As String
        Try
            ' Create the Eikon Desktop object
            If Me.edDataAPI Is Nothing Then
                Me.edDataAPI = New EikonDesktopDataAPI.EikonDesktopDataAPI
            End If

            ' Initialize the Eikon Desktop object to connect to Eikon
            Dim eResult As EEikonDataAPIInitializeResult
            eResult = Me.edDataAPI.Initialize()

            If (eResult <> EEikonDataAPIInitializeResult.Succeed) Then
                Me.DisconnectFromEikon()
                If (eResult = EEikonDataAPIInitializeResult.Error_Reinitialize) Then
                    ConnectToEikon = "Error_Reinitialize"
                ElseIf eResult = EEikonDataAPIInitializeResult.Error_InitializeFail Then
                    ConnectToEikon = "Error_InitializeFail"
                Else
                    ConnectToEikon = eResult.ToString
                End If
            Else
                ConnectToEikon = "Succeed"
            End If
        Catch ex As Exception
            ConnectToEikon = "Exception_ConnectToEikon"
            sErrorInfo = ex.Message.ToString
        End Try
    End Function

After running the function, the GUI of Eikon application starts and we enter the login credentials of our Eikon user for access.

We have compiled the LSEG API Sample “1.2 – DesktopSession” from the source at the begin of this question, using LSEG.Data.dll, but we have the following error:

State: Pending. DesktopSession is Pending

Event: SessionAuthenticationFailed. {

     “Message”: “No connection could be made because the target machine actively refused it. (localhols:9001)”,

     “StatusUrl”: https://localhost:9001/api/status”

}

State: Closed. DesktopSession is Closed

Session failed to open

Could somebody help or give some recommendations how we can correctly organize connection to the Workspace using .NET API?

Thank you in advance!

Jirapongse

@eugen_p

Thank you for reaching out to us.

I assume that you are using the LSEG Data Library for .NET.

Before running the application, you need to run the LSEG Workspace application. The LSEG Data Library for .NET will not start the LSEG Workspace application when running the code.

You may refer to the Eikon Data API and Refinitiv Data Library - Troubleshooting aticle. to make sure that the Data API Proxy is running properly.

wasin.w

Hello @eugen_p

There is a step-by-step guide on this LSEG Data Library for .NET - Quick Start page that might help you too.

If you need more in dept tutorials, please check the https://developers.lseg.com/en/api-catalog/lseg-data-platform/lseg-data-library-for-net/tutorials page.