c# - Form data sent from the front end has different result in controller ASP.NET MVC -

hi having trouble updating product using entity framework. when submitted form, developer's tools, can confirm form sending [0].id = 3.

but when debugging model, debug.print keeps printing 0 id.

here controller

public actionresult details(ilist<item> model) { if (modelstate.isvalid)         {             debug.print(model[0].id.tostring()); //this prints 0             debug.print(model[0].name);// prints correctly             debug.print(model[0].size);// prints correctly             debug.print(model[0].retailprice.tostring());// prints correctly             debug.print(model[0].isavailable.tostring());// prints correctly             (int = 0; < model.count(); i++)             {                 ndb.entry(model[0]).state = system.data.entity.entitystate.modified;                 ndb.savechanges();             }              return redirecttoaction("productindex");         }         return view(model);     } 

anyone has idea why?

edit:

using (html.beginform()) { @html.antiforgerytoken()  <table>     <thead>         <tr>             <td>name</td>             <td>size</td>             <td>price</td>             <td>available</td>         </tr>     </thead>     @for (int = 0; < model.count(); i++)     {         <tr>             @html.hiddenfor(m => m[i].id)             @html.hiddenfor(m => m[i].name)             @html.hiddenfor(m => m[i].size)             @html.hiddenfor(m => m[i].retailprice)             <td>                 @model[i].name             </td>             <td>                 @model[i].size             </td>             <td>                 @model[i].retailprice             </td>             <td>                 @html.checkbox("["+i+"].isavailable", model[i].isavailable)             </td>         </tr>     }      <tr>         <td>             <input type="submit" value="save" class="btn btn-default" />         </td>     </tr>  </table> } 

and have mentioned earlier, form submit developer's tool showed correct id, when came controller, gives me 0 id.

you missed id field in view. should add id field in view hidden field or bind property.

it's not recommended use ef objects in view. create custom view model instead.