asp.net mvc 上传文件

<% using (Html.BeginForm("Action", "Controller", FormMethod.Post, new { enctype = "multipart/form-data" }))
{ %>
<input type="file" id="fuimg" name="fuimg" />
<input type="submit" value="上传" onclick="return UpUImg()" />
<%}

HttpFileCollection hfc = System.Web.HttpContext.Current.Request.Files;

HttpPostedFile postedFile = hfc[0];