Hello @mikez,

To help you to pinpoint the issue, have created an empty 2013 console project and added reference to my local redi.tlb to it.

I attach it here:

consoletest1.zip

You may be able to open it, and if no errors, remove the included reference to .redi.tlb and try adding back reference to .tlb in the local installation of your REDI Plus. The error may give further insight.

Hello @mikez,

Have you had a chance to see C# tutorials on monitoring L1 data

Getting Started in C#

and next

Monitoring L1 in C#

I am waiting for my request to be a family member to be approved. I was given some word documents for installing Redi and using the API in C#.

As part of using the API in C#, I am stuck at one of the initial steps of adding the Redi Type Library reference.

In addition to trying to add it from the COM section shown in the screenshot above, I have tried directly adding the Redi.tlb file in Redi installation folder and also the Redi.tlb that had been given to me in one of the emails. The message I get for those is that it is not a valid assembly or COM component.

@zoya.farberov I now have access to the link you posted - https://developers.refinitiv.com/transactions/redi-api/learning?content=55939&type=learning_material_item. But I am stuck on the first step where I am not able add the Redi 1.0 Type Library reference in Visual studio.

Adding the Redi.tlb directly fails with following message:

Hello @mikez,

If you see .tlb in your folder and are permissioned for it, you should be able to add .tlb as reference.

I would try removing RediLib from references, and next, adding back in by pointing to .tlb:

"Add Reference", browse to it, add it in. Please note, in properties it should appear as Interop.RediLib.dll, copied into your build.

Failing this, please contact your Refinitiv account team, to try to arrange to give you a hand.

Hi @zoya.farberov

As mentioned in my previous replies, I did try adding the TLB file multiple times using "Add reference -> COM-> browse to .tlb file". The error is shown in the image from May 3.

I am using .NET framework 4.5.2. I have also tried changing it to .NET framework 4.5 and .NET framework 4.4 with no luck.

PS: For some reason was not able to reply to your message, hence reply to the main question thread.

@Alex Putkov.@zoya.farberov

As seen in the screenshot redilib-reference.png, I have added a reference to RediLib.dll and the "DisplayRediL1Quotes" code from https://github.com/TR-API-Samples/Example.REDI.CSharp.Examples/blob/master/REDIConsoleL1/RediConsoleL1.cs compiles fine.

When I try to run the code, I get a class not registered exception while trying to create an instance of CacheControl(). Attached is a txt file with the exception. redi-exception.txt

RediPlus is running on the same PC and I have logged in to it.

Any help would be appreciated as this is a critical issue for us now.

Hello @mikez,

Apologies for the delay, and thanks @Alex Putkov. for pointing this out, I did not look at the attachment closely.

Is your REDIPlus running?

The last error that you include, means that your REDIPlus is not running or the valid user is not logged in. To interact with REDIPlus via API it is required that REDIPlus be running or and a valid user be logged in.

This exact error I can reproduce.

Hello @mikez,

Glad to hear it runs as expected in the production environment, suggest removing .dll reference, adding .tlb, rebuilding, and it should run too.

Absolutely agree with you. As the issue is specific to your environment, uninstalling and reinstalling REDIPlus (follow Quickstart to install addon and register DDE) is the right approach to fix this. Hopefully this will be it, if not, thinking, may be something missing or corrupted on the MSFT side, VS.

Hello @mikez,

Like to share some additional information on the error that you are seeing:

https://stackoverflow.com/questions/44019317/visual-studio-cant-reference-tlb-dll-anymore

Can you try registering as described, from an administrator command shell?

Let us know how it works for you.

Thanks