Dropdownlist in mvc5

In Back End Code

var roles = db.RoleTables.ToList();

emp.Role = GetSelectListItems(roles);

private IEnumerable GetSelectListItems(IEnumerable elements)

{

foreach (var element in elements)

{

selectList.Add(new SelectListItem

{

Value = element.Id,

Text = element.Name

});

}

return selectList;

}

In CSHTML

@Html.DropDownListFor(model => model.SelectedRole, Model.Role, "Select ...")

Edit Operation Time

var roles = db.RoleTables.ToList();

empreg.Role = GetSelectListItems(roles);

empreg.SelectedRole = db.RoleTable.Where(re => re.Name == employee.Role).Select(r => r.Id).FirstOrDefault();