c# - Passing parameters on button click in strongly-typed view to another controller -

i have strongly-typed view (bound usercontroller) lists user particular roles , below have dropdownlist containing roles submit button. need assign new role user. actionresult method in userrolescontroller. how can pass userid , roleid on button click actionresult method.

actionresult method in userrolescontroller:

[httppost] [validateantiforgerytoken] public actionresult addrole(userrole userrole, int roleid, int userid)     {         if (!modelstate.isvalid) return view(userrole);          var check = db.userroles.any(x => x.roleid == roleid && x.userid == userid);         if (check)             viewbag.resultmessage = "this user has role specified !";         else             db.userroles.add(userrole);         db.savechanges();         viewbag.resultmessage = "user added role succesfully !";         return redirecttoaction("index");     } 

view this:

@model ienumerable<mvcappcrud.user>  @{ viewbag.title = "assignrole"; }  <h2>assign role</h2> @if (!model.any()) { @html.label("no roles assigned user") } else { <table>     <tr>         <th>             @html.displayname("email")         </th>         <th>             @html.displayname("role name")         </th>         <th></th>     </tr>     @foreach (var item in model)     {         <tr>             <td>                 @html.displayfor(modelitem => item.email)             </td>             <td>                 @html.displayfor(modelitem => item.rolename)             </td>             <td>                 @html.actionlink("delete", "delete", new {id = item.id})             </td>         </tr>     } </table> } <hr />     <div class="display-label">         @html.displayname("add role") </div>  <div class="display-field"> @html.dropdownlist("roles", (selectlist) viewbag.roles) </div>  @using (html.beginform("addrole", "userroles")) { <div class="message-success">@viewbag.resultmessage</div> } <p>     <input type="submit" value="assign" /> </p> <p> @html.actionlink("back list", "index") </p> 

model entities:

public partial class userrole { public int id { get; set; } public int userid { get; set; } public int roleid { get; set; } public int status { get; set; }  public virtual user users { get; set; } public virtual role roles { get; set; } }  public partial class user { public user() {     roles = new list<selectlistitem>(); }  public long id { get; set; } public string email { get; set; } public string password { get; set; } public system.datetime reg_date { get; set; } public byte validated { get; set; } public virtual icollection<userrole> userroles { get; set; } public int roleid { get; set; } public string rolename { get; set; }  public ienumerable<selectlistitem> roles { get; set; }  //public ienumerable<role> roles { get; set; } }  public partial class role { public int id { get; set; } public string rolename { get; set; } public string desc { get; set; } public int status { get; set; } public virtual icollection<userrole> userroles { get; set; } } 

on button click nothing happens. is possible pass values parameters 1 model view another?

there numerous problems code. in particular passing ienumerable<user> model not including or rendering controls in form nothing posts back, , in case cant post userrole because complex object , dropdownlist returns single value. , there no point displaying roles in dropdown, checking if been selected on postback - include roles user not have when create view. , assigning message viewbag , redirecting pointless - lost.

create view model represent want display , edit (note have excluded properties displaying existing roles)

public class userrolevm {   public int id { get; set; } // user id post   public int name { get; set; } // user name display in view   [display(name="select new role")]   public int selectedrole { get; set; }   public selectlist rolelist { get; set; } } 

controller

public actionresult addrole(int id) {   userrolevm model = new userrolevm();   var user = // user based on id   model.id = id;   model.name = user.??   var roles = // roles , remove user has   model.rolelist = new selectlist(roles, "id", "rolename");   return view(model); } 

view

@model userrolevm @using(html.beginform()) {   <h2>@model.name</h2> // users name   @html.labelfor(m => m.selectedrole)   @html.dropdownlistfor(m => m.selectedrole, model.rolelist)   <input type="submit" value="add role" /> } 

post method

[httppost] public actionresult addrole(userrolevm model) {   // model populated id of user , id of selected role   // save , redirect }