asp.net mvc 3 - Upload File via MVC3 -


i'm trying upload file via mvc3 view :

@{     viewbag.title = "pic";     layout = "~/areas/admin/views/shared/_adminlayout.cshtml"; }  @using (html.beginform("fileupload", "blog", formmethod.post)) {     <input name="uploadfile" type="file" />     <input type="submit" value="upload file" /> }

and actions :

public actionresult fileupload()         {             return view();         }          [acceptverbs(httpverbs.post)]         public actionresult fileupload(httppostedfilebase uploadfile)         {             if (uploadfile.contentlength > 0)             {                 string filepath = path.combine(httpcontext.server.mappath("../uploads"),                                                path.getfilename(uploadfile.filename));                 uploadfile.saveas(filepath);             }             return view();         }

what wrong code ?? have error 

object reference not set instance of object.

in line

 if (uploadfile.contentlength > 0)

you should add enctype attribute form.

@using (html.beginform("fileupload", "blog", formmethod.post,                        new { enctype = "multipart/form-data" }))

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