asp.net mvc 3验证问题

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.DataAnnotations;
namespace Entities.EntityExtensions
{
    [MetadataType(typeof(IncomeDeclaration_Validation))]
    public partial class IncomeDeclaration
    {
    }

    [Bind(Exclude="Id")]
    public class IncomeDeclaration_Validation
    {
        [Required]
        [StringLength(100)]
        public string Name;
    }
}

“我得到的类型或命名空间Bind未定义”错误......我迷失了。

请帮助

Answer 1

您尚未在其中包含System.Web.Mvc命名空间...