asp.net mvc - I have a list with objects, each object contains a list, each of these lists needs to become a DropDownList in a gridview -

i have list contains ~80 of following objects:

public class sourcemapping {     public int id { get; set; }     public string sourcewaarde { get; set; }     public string onderwerp { get; set; }     public string sourceid { get; set; }     public string applicatiedataid { get; set; }      [notmapped]     public string selectedvalue { get; set; }     [notmapped]     public ienumerable<selectlistitem> destinationoptionslist { get; set; } } 

each of these objects can see has ienumerable< selectlistitem > these options want display in table combobox (dropdownlist). way works should work:

    @model myproject.models.home.homeviewmodel      <table>     @foreach (var sourceentity in model.onderwerp.sourceentitieslist)     {         <tr>             <td>                 @sourceentity.sourcewaarde             </td>             <td>                 @html.dropdownlistfor(model => sourceentity.selectedvalue, sourceentity.destinationoptionslist)             </td>         </tr>     }     </table> 

in above view model.onderwerp.sourceentitieslist list contains sourcemapping objects.

the above view show table sourcewaardes, next dropdownlist right selected value.

now want use webgrid , can't seem find how transform above view in 1 uses webgrid. far have this:

    @model myproject.models.home.homeviewmodel          @{     webgrid webgrid = new webgrid(model.onderwerp.sourceentitieslist, cansort: false);        }      @webgrid.gethtml(mode: webgridpagermodes.all, tablestyle: "tranlist",             headerstyle: "", firsttext: "", lasttext: "",             columns: webgrid.columns(                    webgrid.column("sourcewaarde", header: "bron waarde"),                    webgrid.column(header: "doel waarde",                         format: (item) => @html.dropdownlistfor(model => model.selectedvalue,                             model.onderwerp.sourceentitieslist.destinationoptionslist))                    )) 

the problem in last row:

(item) => @html.dropdownlistfor(model => model.selectedvalue,                 model.onderwerp.sourceentitieslist.destinationoptionslist) 

the model.onderwerp.sourentitieslist.destinationoptionlist should refer last iterated object in webgrid. i'm pretty stuck right can welcome. found hard explain problem, if need more information i'll happy provide.