jQuery Unobtrusive client-side validation of custom attribute

Question

I have created a custom validation attribute which works server-side (after form is posted) but I cannot get the validation to work client-side.

The custom attribut

Answer 1

Since I landed here when looking into my issue, I'd like to share that if you're using any 3rd party libraries for controls, such as DevExpress with option embed client libraries, then they may actually re-include the validation scripts, which could lead to your adapter being properly added only to be later lost again. In my case, I had to move my .js file creating the client side unobtrusive validator adapter down below these other offending scripts. I'd also want to either consider dropping my own inclusion of said files, or configuring my 3rd party library not to include them, to prevent such confusion.