用MVC上傳文件3

Question

我正在越來越薄的學習mvc3。我有下面的代碼在我的控制器

[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); 



    } 
} 

這裏的景觀：

@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> 

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

當我嘗試要上傳，我收到以下錯誤消息：

異常詳細信息：System.ArgumentOutOfRangeException：索引超出範圍。必須是非負數且小於集合的大小。 參數名稱：index

任何一個指向正確方向的指針？

---

對不起延遲。下面是新的代碼

[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

在行動直接讓你發佈文件：

這裏是討論這樣：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？您應該期望文件存儲在類Accreditation的屬性中，而不是在中。

因此，你需要在性能AccreditationPressCard和Passport，既HttpPostedFileBase類型，然後在你的代碼中使用這些屬性。

Answer 3

真的上傳數據嗎？我建議你使用這種方式。創建一個類型爲HttpPostedFileBase的參數，其同名作爲輸入字段並測試其內容長度屬性。

不要忘記使用相同的名稱，參數和輸入的標籤。

檢查該鏈接會以最快的方式爲你繼續前進。

MVC 3 file upload and model binding