public ActionResult Edit(int id)
{
ViewBag.Role = _userGrDao.ListAllRole();
string _credential = null;
foreach (var credential in _userGrDao.GetCredentialByUserGroupID(id))
{
_credential += credential.RoleID + ",";
}
ViewBag.Credentail = _credential;
var user = _userGrDao.ViewDetail(id);
var res = Mapper.Map <UserGroup, UserGroupViewModel>(user);
return(View(res));
}