如何在不覆盖ASP.NET MVC中的模型类的情况下更新（通过合并）edmx

我正在asp.net mvc中开发一个应用程序。我使用实体框架作为ORM。我有个问题。要使用javascript非侵入式验证，我需要向模型对象添加注释。例如; [必填]，[EMailAddress]。但是，当我们向数据库中添加某些内容并对其进行更新时，所有模型类都将被覆盖，并且所有注释都将消失。或者，一旦您打开edmx，就会自动覆盖自动模型类。我怎么解决这个问题。屏幕和类有几十个，edmx中的最小变化都会擦除所有类中的注释，从而浪费大量时间。

// <auto-generated>

using System.ComponentModel.DataAnnotations;

namespace MerinosSurvey.Models
{
using System;
using System.Collections.Generic;

public partial class Surveys
{
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
    public Surveys()
    {
        this.SurveyQuestions = new HashSet<SurveyQuestions>();
        this.SurveyCustomers = new HashSet<SurveyCustomers>();
    }

    public int SurveyId { get; set; }
    [Required(ErrorMessage = "Plase enter survey name.")]
    public string SurveyName { get; set; }
    [Required(ErrorMessage = "Please enter survey description.")]
    public string SurveyDescription { get; set; }

    // [DataType(DataType.Date)]
    public System.DateTime? CreatedDate { get; set; }
    //[DataType(DataType.Date)]

    public System.DateTime? UpdatedDate { get; set; }
    public int CreatedUserId { get; set; }
    public bool IsActive { get; set; }
    public bool Status { get; set; }

    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<SurveyQuestions> SurveyQuestions { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<SurveyCustomers> SurveyCustomers { get; set; }

    public string Token { get; set; }
}
}

编辑元数据

调查部分和元数据

 //PartialClass
 [MetadataType(typeof(SurveyMetadata))]
 public partial class Surveys
{
}
//Metadata
 public partial class SurveyMetadata
{
    public int SurveyId { get; set; }
    [Required(ErrorMessage = "Lütfen anket adını giriniz.")]
    public string SurveyName { get; set; }
    [Required(ErrorMessage = "Lütfen anket açıklamasını giriniz.")]
    public string SurveyDescription { get; set; }

    // [DataType(DataType.Date)]
    public System.DateTime? CreatedDate { get; set; }
    //[DataType(DataType.Date)]

    public System.DateTime? UpdatedDate { get; set; }
    public int CreatedUserId { get; set; }
    public bool IsActive { get; set; }
    public bool Status { get; set; }

    public virtual ICollection<SurveyQuestionMetadata> SurveyQuestionMetadatas { get; set; }
    public virtual ICollection<SurveyCustomerMetadata> SurveyCustomerMetadatas { get; set; }

    public string Token { get; set; }
}

GetData Ajax事件

  // GET: Survey
    public ActionResult GetData()
    {
        using (MerinosSurveyEntities entity = new MerinosSurveyEntities())
        {
            List<Surveys> surveys = entity.Surveys.Where(x => x.IsActive && x.Status)
                .OrderBy(x => x.SurveyId).ToList();
            return Json(new { data = surveys }, JsonRequestBehavior.AllowGet);
        }
    }

我应该如何更改我的GetData事件。什么列表应该转到客户端？