用MVC上传文件3

Question

我正在越来越薄的学习mvc3。我有下面的代码在我的控制器

[HttpPost] 
    public ActionResult Accreditation(Accreditation accreditation) 
    { 
     if (ModelState.IsValid) 
     { 
      var fileUpload = Request.Files[0]; 
      var uploadPath = Server.MapPath("~/App_Data/uploads"); 

      using (var fs = new FileStream(Path.Combine(uploadPath, accreditation.PressCard.ToString()), FileMode.Create)) 
      { 
       var buffer = new byte[fileUpload.InputStream.Length]; 
       fileUpload.InputStream.Read(buffer, 0, buffer.Length); 

       fs.Write(buffer, 0, buffer.Length); 
      } 

      context.Accreditations.Add(accreditation); 
      context.SaveChanges(); 

      return RedirectToAction("Index"); 
     } 


      ViewBag.PossibleNationalities = context.Nationalities; 
      ViewBag.PossibleNchis = context.Nchis; 
      ViewBag.PossibleMedia = context.Media; 
      ViewBag.PossibleEmploymentStatus = context.EmploymentStatus; 
      return View(accreditation); 



    } 
} 

这里的景观：

@using (Html.BeginForm("Accreditation", "Home", new { enctype = "multipart/form-data" }, FormMethod.Post)) 
{ 
    @Html.ValidationSummary(true) 
............. 
............. 

<div class="editor-field"> 
     <input type="file" name="PressCard" id="PressCard" data-val-required="Press card is required" data-val="true"/> 
     @Html.ValidationMessageFor(model => model.PressCard) 
    </div> 

    <div class="editor-label"> 
     @Html.LabelFor(model => model.Passport) 
    </div> 
    <div class="editor-field"> 
     <input type="file" name="Passport" id="Passport" data-val-required="ID/Passport is required" data-val="true"/> 
     @Html.ValidationMessageFor(model => model.Passport) 
    </div> 

....... ........

当我尝试要上传，我收到以下错误消息：

异常详细信息：System.ArgumentOutOfRangeException：索引超出范围。必须是非负数且小于集合的大小。 参数名称：index

任何一个指向正确方向的指针？

---

对不起延迟。下面是新的代码

[HttpPost] 
public ActionResult Accreditation(Accreditation accreditation, HttpPostedFileBase Passport) 
    { 
     if (ModelState.IsValid) 
     { 
      var uploadPath = Server.MapPath("~/App_Data/uploads"); 

      using (var fs = new FileStream(Path.Combine(uploadPath, accreditation.PressCard.ToString()), FileMode.Create)) 
      { 
       var buffer = new byte[Passport.InputStream.Length]; 
       Passport.InputStream.Read(buffer, 0, buffer.Length); 

       fs.Write(buffer, 0, buffer.Length); 
      } 

      context.Accreditations.Add(accreditation); 
      context.SaveChanges(); 

      return RedirectToAction("Index"); 
     } 


      ViewBag.PossibleNationalities = context.Nationalities; 
      ViewBag.PossibleNchis = context.Nchis; 
      ViewBag.PossibleMedia = context.Media; 
      ViewBag.PossibleEmploymentStatus = context.EmploymentStatus; 
      return View(accreditation); 



    } 
} 

Answer 1

在行动直接让你发布文件：

这里是讨论这样：MVC 3 file upload and model binding

[HttpPost] 
public ActionResult Accreditation(Accreditation accreditation, HttpPostedFileBase Passport) 
{ 
    ... 
} 

Answer 2

var fileUpload = Request.Files[0];就是你有你的例外行，是不是它？您应该期望文件存储在类Accreditation的属性中，而不是在中。

因此，你需要在性能AccreditationPressCard和Passport，既HttpPostedFileBase类型，然后在你的代码中使用这些属性。

Answer 3

真的上传数据吗？我建议你使用这种方式。创建一个类型为HttpPostedFileBase的参数，其同名作为输入字段并测试其内容长度属性。

不要忘记使用相同的名称，参数和输入的标签。

检查该链接会以最快的方式为你继续前进。

MVC 3 file upload and model binding