asp.net mvc - MVC || HTML Form || Object reference not set to an instance of an object -

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i error , dont know how on come it:

"object reference not set instance of object."

line 48:         public actionresult upload(imagefile imagefile) line 49:         { line 50:             foreach (var image in imagefile.files) line 51:             { line 52:                 if (image.contentlength > 0)

i tried using id attribute , name attribute , not...

this problematic section in controller :

     [httppost]     public actionresult upload(imagefile imagefile)     {         foreach (var image in imagefile.files)         {             if (image.contentlength > 0)             {                 cloudblobcontainer blobcontainer = _blobstorageservice.getcloudblobcontainer();                 cloudblockblob blob = blobcontainer.getblockblobreference(image.filename);                 blob.uploadfromstream(image.inputstream);             }         }         return redirecttoaction("upload");     }

this html.form :

<p>     @using (html.beginform("upload", "home", formmethod.post, new { enctype = "multipart/form-data" }))     {         <input type="file" name="imagefile" id="imagefile" multiple />         <input type="submit" name="submit" value="upload" />     } </p>

and "imagefile" class :

public class imagefile {     public ienumerable<httppostedfilebase> files { get; set; } }

what i'm doing wrong ? read lot of posts exception none of them helped me..

thank you.

just change name of html input files, in model class:

your input element in view:

<input type="file" name="files" id="files" multiple />

your model:

public class imagefile {     public ienumerable<httppostedfilebase> files { get; set; } }

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