asp.net mvc - ViewModel Contents are Null after Posting Form to Controller -

so viewmodel has 2 sets of data. currentdetails , updateddetails. both instances of same class carries strings , whatnot inside etc.

this method has worked other views , models i've attempted with, 1 instance, when form posted controller, contents (currentdetails , updateddetails) both found null.

i've tried changing parameter name model test , other arbitrary things, no avail.

the 1 thing worked (but not solution me) not having instances of class inside viewmodel, , having data there (but don't see why should forced things way.

here's controller:

[httppost] public actionresult floristprofile(merchantfloristprofileviewmodel test) {     if (!modelstate.isvalid)         return view(test);      using (var db = new applicationdbcontext())     {         florist florist = db.florists.find(merchantbase.floristid);         if (request.form["editsubmit"] != null)         {             florist.name = test.updateddetails.name;             florist.website = test.updateddetails.website;             db.savechanges();             return redirecttoaction("floristprofile");         }         else if (request.form["photosubmit"] != null)         {             if (test.currentdetails.file.contentlength > 0)             {                 cloudblobcontainer container = flowerstorage.getcloudblobcontainer();                 string blobname = string.format("florist_{0}.jpg", guid.newguid().tostring());                 cloudblockblob photoblob = container.getblockblobreference(blobname);                     photoblob.uploadfromstream(test.currentdetails.file.inputstream);                 florist.logopath = blobname;                 florist.isrendering = true;                 db.savechanges();                 return redirecttoaction("floristprofile");             }         }     }     return content("invalid request"); } 

view:

@using (html.beginform("floristprofile", "merchant", formmethod.post, new { @class = "form-horizontal" })) {     @html.validationsummary(false, "", new { @class = "text-danger" })     @html.hiddenfor(x => x.currentdetails.floristid)     @html.hiddenfor(x => x.currentdetails.name)     @html.hiddenfor(x => x.currentdetails.staffcount)     @html.hiddenfor(x => x.currentdetails.storecount)     @html.hiddenfor(x => x.currentdetails.website)     <div class="form-group">         @html.labelfor(x => x.updateddetails.name, new { @class = "col-sm-2 control-label" })         <div class="col-sm-10">             @html.textboxfor(x => x.updateddetails.name, new { @class = "form-control" })         </div>     </div>     <div class="form-group">         @html.labelfor(x => x.updateddetails.website, new { @class = "col-sm-2 control-label" })         <div class="col-sm-10">             @html.textboxfor(x => x.updateddetails.website, new { @class = "form-control" })         </div>     </div>     <div class="form-group">         <div class="col-sm-offset-2 col-sm-10">             <button type="submit" name="editsubmit" class="btn btn-success">save</button>         </div>     </div> } 

viewmodel:

public class merchantfloristprofileviewmodel {     public class floristprofiledetails     {         public int floristid { get; set; }         [required(errormessage = "please enter name")]         public string name { get; set; }         [datatype(datatype.url)]         [required(errormessage = "please enter website")]         public string website { get; set; }         public int storecount { get; set; }         public int staffcount { get; set; }         // picture upload         public httppostedfilebase file { get; set; }     }     public floristprofiledetails currentdetails;     public floristprofiledetails updateddetails; } 

both currentdetails , updateddetails in merchantfloristprofileviewmodel model fields, not properties (no getter/setter) defaultmodelbinder cannnot set values. change them

public floristprofiledetails currentdetails { get; set; } public floristprofiledetails updateddetails { get; set; } 

but should not sending data view, sending again unchanged. apart overhead, malicious user alter values in hidden fields causing app fail. original repository again if need in post method