I am working with WFFM File upload and was asked to restrict File Size and File types. So I created a custom field that inherits the OOTB Upload File of WFFM in order to accommodate the restrictions.
I have tried the ideas in below links..
However, both references seem not working in my machine. I have tried debugging it but not debugging on point. I am not sure if the references stated above work in WFFM 8.1 160523 as it requires an MVC Field.
Please advice me on this.