Try using the [StringLength] attribute: [Required(ErrorMessage = “Name is required.”)] [StringLength(40, ErrorMessage = “Name cannot be longer than 40 characters.”)] public string Name { get; set; } That’s for validation purposes. If you want to set for example the maxlength attribute on the input you could write a custom data annotations metadata provider as shown … Read more
If you are using Data Annotations to perform validation you might need a custom attribute: public class EnsureOneElementAttribute : ValidationAttribute { public override bool IsValid(object value) { var list = value as IList; if (list != null) { return list.Count > 0; } return false; } } and then: [EnsureOneElement(ErrorMessage = “At least a person … Read more
There is no need to disable jQuery date validation (and that is likely to cause other issues). You just need to override the range method of the $.validator. By default, it works with numeric values (and then falls back to a string comparison), so you can add the following script (after jquery.validate.js and jquery.validate.unobtrusive.js, but … Read more