I am trying to create a subscription for the modify, add and delete Estimate using .net core but when I try to run my code I get this error
Error Message - The callback application cannot be found from the CLSID or ProgID provided in the subscription request.
I read about this and with all the answers I have I must create IQBEventCallback for Define the CLSID but I don't know how I can do that using .net any help, please.