JQuery自定义验证属性MVC核心

我尝试添加一个自定义属性来验证所需字段,并修剪空白值。

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false)]
public class CustomRequired : ValidationAttribute, IClientModelValidator
{
    public CustomRequired()
    {
        ErrorMessage = new ResourceManager(typeof(ErrorResource)).GetString("All_Required");
    }

    public void AddValidation(ClientModelValidationContext context)
    {
        if (context == null)
            throw new ArgumentNullException(nameof(context));

        MergeAttribute(context.Attributes, "data-val", "true");
        MergeAttribute(context.Attributes, "data-val-customrequired", ErrorMessage);
    }

    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        return value.ToString().Trim().Length > 0 ? ValidationResult.Success : new ValidationResult(ErrorMessage);
    }

    private static bool MergeAttribute(IDictionary<string, string> attributes, string key, string value)
    {
        if (attributes.ContainsKey(key))
        {
            return false;
        }
        attributes.Add(key, value);
        return true;
    }
}

下面是我如何添加(或尝试):

$(document).ready(function () {
    $.validator.addMethod("customrequired", function (value, element, parameters) {
        return $.trim(value).length > 0;
    });
    $.validator.unobtrusive.adapters.addBool('customrequired');
});

[CustomRequired]
public string Code { get; set; }

编辑:

我忘了说我在使用剑道…请看下面我自己的答案。