没有为此对象定义的无参数构造函数。

问题描述

我尝试实现简单的文件上传

I try to implement simple file upload

public class Movie
   {
       public int id { get; set; }
       public string name { get; set; }
       public string duration { get; set; }
   }

我的观点

My View

@model MvcApplication1.Models.Movie
@{
    ViewBag.Title = "FileUpload";
}

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <fieldset>
        <legend>Movie</legend>
        <div>
            @Html.LabelFor(m=>m.name)
            @Html.TextBoxFor(m=>m.name)
        </div>
        <div>
            @Html.LabelFor(m=>m.duration)
            @Html.TextBoxFor(m=>m.duration)
        </div>

        <div>
            <input type="file" name="fileUpload" />
        </div>

        <p>
            <input type="submit" value="Upload movie" />
        </p>
    </fieldset>
}

[HttpGet]
        public ActionResult FileUpload()
        {
            return View();
        }

        [HttpPost]
        public ActionResult FileUpload(Movie OMovie, HttpPostedFile postedFile)
        {
            var file = postedFile;
            return Content("You got the file.");
        }

但是我收到了错误

But i got error

[MissingMethodException: No parameterless constructor defined for this object.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +113
   System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +232

请帮忙......

please help...

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