ASP.NET MVC How to convert ModelState errors to json

Question

How do you get a list of all ModelState error messages? I found this code to get all the keys: ( Returning a list of keys with ModelState errors)

var errorK         


        

Answer 1

I made and extension that returns string with seperator " " (you can use your own):

   public static string GetFullErrorMessage(this ModelStateDictionary modelState) {
        var messages = new List();

        foreach (var entry in modelState) {
            foreach (var error in entry.Value.Errors)
                messages.Add(error.ErrorMessage);
        }

        return String.Join(" ", messages);
    }