Int or Number DataType for DataAnnotation validation attribute

Question

On my MVC3 project, I store score prediction for football/soccer/hockey/... sport game. So one of properties of my prediction class looks like this:

[Range(0         


        

Answer 1

Use regex in data annotation

[RegularExpression("([0-9]+)", ErrorMessage = "Please enter valid Number")]
public int MaxJsonLength { get; set; }

Answer 2

Try this attribute :

public class NumericAttribute : ValidationAttribute, IClientValidatable {

    public override bool IsValid(object value) {
        return value.ToString().All(c => (c >= '0' && c <= '9') || c == '-' || c == ' ');
    }


    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) {
        var rule = new ModelClientValidationRule
        {
            ErrorMessage = FormatErrorMessage(metadata.DisplayName),
            ValidationType = "numeric"
        };
        yield return rule;
    }
}

And also you must register the attribute in the validator plugin:

if($.validator){
     $.validator.unobtrusive.adapters.add(
        'numeric', [], function (options) {
            options.rules['numeric'] = options.params;
            options.messages['numeric'] = options.message;
        }
    );
}