How to change the ErrorMessage for int model validation in ASP.NET MVC?

Question

I have a model with a property defined like this:

    [Required(ErrorMessage="Please enter how many Stream Entries are displayed per page.")]     [Range(0,250, ErrorMessage="Please enter a number between 0 and 250.")]     [Column]     public int StreamEntriesPerPage { get; set; } 

This works unless the user enters something like "100q". Then a rather ugly error is displayed that says "The value '100q' is not valid for StreamEntriesPerPage."

Is there an attribute I can use to override the default error message when input is not an int?

Answer 1

Yes, you can use Data annotations extensions, mark your property as the following:

[Required(ErrorMessage = "Please enter how many Stream Entries are displayed per page.")] [Range(0, 250, ErrorMessage = "Please enter a number between 0 and 250.")] [Column] [DataAnnotationsExtensions.Integer(ErrorMessage = "Please enter a valid number.")] public int StreamEntriesPerPage { get; set; } 

Answer 2

Try adding

[RegularExpression("\\d+", ErrorMessage = "some message here")] 

Reference blog post