如何在ASP.NET MVC的客户端中触发自定义验证器

Question

This is my custom validator class:

public class PriceAttribute : ValidationAttribute {

    public double MinPrice { get; set; }

    public override bool IsValid(object value) {
        if (value == null) {
            return true;
        }
        var price = (double)value;
        if (price < MinPrice) {
            return false;
        }
        double cents = price - Math.Truncate(price);
        if (cents < 0.99 || cents >= 0.995) {
            return false;
        }

        return true;
    }
}

And my Model:

public class MyModel {

    public long Id { get; set; }

    [Price(MinPrice = 1.2, ErrorMessage = "hmm not good value")]
    public double Price { get; set; }
}

But this validator fires with postback. How can I implement it to fire client side like the [Required] validator. Is there any jQuery reference to add in the view page? Or do I need a custom script to handle it?

Answer 1

This article describes in detail, which steps you have to do in order to also get client side validation.

but this validator fire with postback

Please note there is no postback, just plain HTTP POSTs in MVC.

Answer 2

您最好使用jQuery验证引擎。