c# - The requested URL returned 500 - Internal Server Error -

i'm having problems in project asp.net mvc razor using kendo-grid. data model following:

public partial class usuario {     private string _id;     public virtual string id     {                 {             return this._id;         }         set         {             this._id = value;         }     }      private string _idperfil;     public virtual string idperfil     {                 {             return this._idperfil;         }         set         {             this._idperfil = value;         }     }      private string _identidad;     public virtual string identidad     {                 {             return this._identidad;         }         set         {             this._identidad = value;         }     }      private int? _iddeparea;     public virtual int? iddeparea     {                 {             return this._iddeparea;         }         set         {             this._iddeparea = value;         }     }      private char _forzarcambioclave;     public virtual char forzarcambioclave     {                 {             return this._forzarcambioclave;         }         set         {             this._forzarcambioclave = value;         }     }      private short? _iddirectivaseguridad;     public virtual short? iddirectivaseguridad     {                 {             return this._iddirectivaseguridad;         }         set         {             this._iddirectivaseguridad = value;         }     }      private string _hash;     public virtual string hash     {                 {             return this._hash;         }         set         {             this._hash = value;         }     }      private char _requiererol;     public virtual char requiererol     {                 {             return this._requiererol;         }         set         {             this._requiererol = value;         }     }      private string _idestado;     public virtual string idestado     {                 {             return this._idestado;         }         set         {             this._idestado = value;         }     }      private long _idpersona;     public virtual long idpersona     {                 {             return this._idpersona;         }         set         {             this._idpersona = value;         }     }      private estado _estado;     public virtual estado estado     {                 {             return this._estado;         }         set         {             this._estado = value;         }     }      private directivaseguridad _directivaseguridad;     public virtual directivaseguridad directivaseguridad     {                 {             return this._directivaseguridad;         }         set         {             this._directivaseguridad = value;         }     }      private entidad _entidade;     public virtual entidad entidad     {                 {             return this._entidade;         }         set         {             this._entidade = value;         }     }      private persona _persona;     public virtual persona persona     {                 {             return this._persona;         }         set         {             this._persona = value;         }     }      private ilist<rol> _roles = new list<rol>();     public virtual ilist<rol> roles     {                 {             return this._roles;         }     }      private ilist<logmasterauditoria> _logsmasterauditoria = new list<logmasterauditoria>();     public virtual ilist<logmasterauditoria> logsmasterauditoria     {                 {             return this._logsmasterauditoria;         }     }  } 

controller managing model is:

public class usuarioscontroller : basecontroller {     private usuario usuario = new usuario();      public actionresult cargar([datasourcerequest]datasourcerequest request)     {         return json(backend.usuarios.todatasourceresult(request));     } 

... }

view is:

<div>      @(html.kendo().grid<netinfinity.backendcore.usuario>()          .name("grid")          .columns(columns =>          {              columns.bound(c => c.id).filterable(false).width(100).title(@usuarios.id);              columns.bound(c => c.persona.nombres).width(80).title(@usuarios.nombre);              columns.bound(c => c.estado.descripcion).width(60).title(@usuarios.nombreperfil);              columns.bound(c => c.persona.tipoidentidad.formatopresentacion).width(20).title(@usuarios.idtipo);              columns.bound(c => c.persona.numeroidentificacion).width(30).title(@usuarios.idnumero);              columns.command(c => c.custom("edit").text("editar"));              columns.command(c => c.custom("remove").text("eliminar"));          })          .toolbar(t => { t.excel(); })          .navigatable()          .pageable()          .sortable()          .scrollable()          .filterable()          .editable(e => e.mode(grideditmode.popup))          .resizable(resize => resize.columns(true))          .htmlattributes(new { style = "height:430px;" })          .datasource(datasource => datasource              .ajax()              .serveroperation(false)              .model(model => model.id(c => c.id))              .read(read => read.action("cargar", "usuarios"))           )      )  </div>

problem seems raises when json serialization controller executed because no data shown grid , table has rows. maybe there problem serializing objects model virtual properties, eg: virtual persona object , others. please need on how put work.

have tried debug , exception message + stack trace detect error? debugger tool avoid "maybe". moreover, asp.net should return error description if such config has been turned on in web.config.

please, find error debugging , post exception details here.

or change web.config such have following value:

<configuration>     <system.web>         <customerrors mode="off" />     </system.web> </configuration> 

refresh page , error's description.
detect error , fix or post here , you.