MVC上傳文件HttpPostedFileBase file為null

 

MVC使用Ajax.BeginForm上傳文件時HttpPostedFileBase file為null，Request.Files獲取不到文件，

把頁面中存在jquery.unobtrusive-ajax.js給注釋后掉后就正常。

前端代碼：

@using (Html.BeginForm("Upload", "File", FormMethod.Post, new { enctype = "multipart/form-data" }))

{

選擇文件:

< input  type = "file"  name = "uploadFile"  />

< input  type = "submit"  />

}

后端代碼：

[HttpPost]

public  ActionResult Upload(HttpPostedFileBase uploadFile)

{

     if  (uploadFile !=  null  && uploadFile.ContentLength > 0)

     {

         string  fileName = WebSecurity.CurrentUserId + Path.GetExtension(uploadFile.FileName)

         string  direction = Server.MapPath( "~/UpLoad/Companys/logo/" );

         string  destinationPath = Path.Combine(direction, fileName);

         if  (!Directory.Exists(direction))

         {

             Directory.CreateDirectory(direction);

         }

         uploadFile.SaveAs(destinationPath);

     }

     return  View();

}