C# Html.ValidationMessageFor 在表单发布时不起作用

如何解决C# Html.ValidationMessageFor 在表单发布时不起作用

我对验证消息有疑问。
控制器：

[HttpGet]
    [Authorize]
    public ActionResult Others(string bid)
    {
              return View(ret);
    }

    [HttpPost]
    public ActionResult OthersUser(Others info)
    {
             return RedirectToAction("Others","User",new { bid = "1" });
    }

    [HttpPost]
    public ActionResult OthersPass(Others info)
    {
        if (ModelState.IsValid)
        {
          
        }
        return RedirectToAction("Others",new { bid = "2" }); ;
    }

密码确认类：

public class PassConfirm
{
    [Key]
    public int ID { get; set; }
    public User User { get; set; }
    public virtual int UserID { get; set; }
    public string Key { get; set; }

    [required]
    public string Password { get; set; }

    [NotMapped]
    [Compare("Password",ErrorMessage = "Passwords not matching!")]
    public string ConfirmPassword { get; set; }
}

其他类：

public class Others
{
    public int BID { get; set; }

    public PassConfirm PassChg { get; set; }
    public String OldPsw { get; set; }

    public User User { get; set; }
    public string UserCheck { get; set; }


}

查看：

<div style="display: flex; align-items: center;">
            @using (Html.BeginForm("OthersPass",FormMethod.Post))
            {
                <table>
                    <tr>
                        <td><label for="oldpsw">Eski Şifre:</label></td>
                        <td>@Html.TextBoxFor(x => x.OldPsw,new { @id = "oldpsw",@type = "password" })</td>
                    </tr>
                    <tr>
                        <td><label for="newpsw">Yeni Şifre:</label></td>
                        <td>@Html.TextBoxFor(x => x.PassChg.Password,new { @id = "newpsw",@type = "password" })</td>
                        <td>@Html.ValidationMessageFor(x => x.PassChg.Password)</td>
                    </tr>
                    <tr>
                        <td><label for="confpsw">Şifreyi Doğrula:</label></td>
                        <td>@Html.TextBoxFor(x => x.PassChg.ConfirmPassword,new { @id = "confpsw",@type = "password"})</td>
                        <td>@Html.ValidationMessageFor(x => x.PassChg.ConfirmPassword)</td>
                    </tr>
                </table>
                <button class="btn btn-success" formmethod="post">Onayla</button>
            }
        </div>

当用户点击带有错误值的按钮时，它什么都不返回。我认为问题是由 2 post 方法引起的。可能是因为 ActionResult 元素返回的值。那么问题的根源是什么？