ASP.NET MVC控制器里捕获视图的错误验证信息（ErrorMessage）

/// <summary>
/// 评论用验证视图
/// </summary>
public partial class VCreateShopComment
{
[Required(AllowEmptyStrings = false, ErrorMessage = "旺旺是必须的")]
public string WW { get; set; }

[Required(AllowEmptyStrings = false, ErrorMessage = "必须评论")]
[StringLength(200, ErrorMessage = "评论内容不能超过{0}字")]
public string CommentText { get; set; }

[Range(1, 5, ErrorMessage = "评分要在{1}到{2}之间")]
public short Score { get; set; }

//[Range(0, int.MaxValue, ErrorMessage = "您的账户无效")]
public int ID{ get; set; }

}

[HttpPost]
public ActionResult Add(VCreateShopComment v)
{

if (ModelState.IsValid)
{
//做爱做的事
}
StringBuilder sb = new StringBuilder();
var errors = ModelState.Values;
foreach (var item in errors)
{
foreach (var item2 in item.Errors)
{

　　　　　　　　　　if (!item2.ErrorMessage.IsNullOrWhiteSpace())
{
sb.AppendLine(item2.ErrorMessage + "<br />");
}

} } return Content(sb.ToString()); }