Giving a DLL reference written in VB into my web API project

I am developing a API. I have DLL ready but in VB code. i want to fetch the properties n fucntions of that DLL. Can i use the DLL which is in VB into my Web API project which is in C#? It will really easy my task. Please anyone? I tried giving the reference of that DLL in my API but i get an error on run time.