asp.net-mvc - ASP.NET MVC UpdateModel 抛出异常 : "Model could not be updated"

Question

我试图在 MVC 中更新一个简单的模型，但它不起作用，它抛出一个异常，说模型无法更新:

      [HttpPost]
        public ActionResult SignIn([Bind(Exclude="TxtEmail")]Usuarios usuario,FormCollection fc)
        {
            try
            {
                UsuariosModel userModel = new UsuariosModel(usuario);
                userModel.Usuarios.TxtEmail = "test@test.com";

                UpdateModel(userModel);

                if (ModelState.IsValid)
                {
                 [...]
                }
                [...]
        }

这是模型:

[Required(ErrorMessage="**O email é requerido")]
[RegularExpression("^[a-z0-9_\\+-]+(\\.[a-z0-9_\\+-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*\\.([a-z]{2,4})$",ErrorMessage="**Email Inválido")]
public string TxtEmail
{
    get { return this.txt_email; }
    set { this.txt_email = value; }
}

我如何使用这种方法“UpdateModel”？

Answer 1

也许您的数据与验证不匹配。

我会尝试 TryUpdateModel .

The TryUpdateModel method is like the UpdateModel method except that the TryUpdateModel method does not throw an InvalidOperationException exception if the updated model state is not valid.