MVC上传文件HttpPostedFileBase file为null

 

MVC使用Ajax.BeginForm上传文件时HttpPostedFileBase file为null，Request.Files获取不到文件，

把页面中存在jquery.unobtrusive-ajax.js给注释后掉后就正常。

前端代码：

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

{

选择文件:

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

<input type="submit" />

}

后端代码：

[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();

}