asp.net mvc - MVC: Send parameters to Action in Controller with Bootstrap button -

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view:

@using (html.beginform("updatematerial", "mycontroller", formmethod.post, model.materialid))     {     @html.antiforgerytoken()     <input type="submit" class="btn btn-primary custom" value="derivate material" />     }

controller:

[httppost] public actionresult updatematerial(int? matid)         {             if (matid == null)             {                 return new httpstatuscoderesult(httpstatuscode.badrequest);             }         //do here         }

the id send null. how change this?

your model.materialid should form element: 

@using (html.beginform("updatematerial", "mycontroller", formmethod.post)) {      @html.hiddenfor(model => model.materialid)       @html.antiforgerytoken()      <input type="submit" class="btn btn-primary custom" value="derivate material" /> }

additionally, should change action definition , make accept type of model, instead of int?:

[httppost] public actionresult updatematerial(mymodeltype model) {      if (model.matid == null)      {          return new httpstatuscoderesult(httpstatuscode.badrequest);      }      //do here }

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