在asp.net剃须刀中为下拉列表选择验证所需的设置

Question

如何在不使用模型的情况下在asp.net剃须刀的dropdownlist上应用所需的验证选择。下面 是我的DropDownList

<td>@Html.DropDownList("Units", new SelectList(@ViewBag.Settings.CdcPortalRentInfo 
     , "CdcPortalRentInfoId" , "Description") 
     , new { style = "width:250px" }) 
</td> 

Answer 1

在模型中只需添加数据注释：

[Required(ErrorMessage = "You must select a RentInfo")] 
    public int CdcPortalRentInfoId{ get; set; } 
    public int Description{ get; set; } //I think this is you property 

Answer 2

尝试这样的事情有要求的属性在MVC

public class CdcPortalRentInfo 
{ 
     [Required(ErrorMessage="Your Error Message")] 
     public int CdcPortalRentInfoId{ get; set; } 

     public string Description {get;set;} 
}