public JsonResult CheckUserName(string username, string email, string sodienthoai, string cmnd)
{
var isDuplicate = false;
foreach (var user in _nhanVienKhoBus.GetAllUserName())
{
if (user.UserName == username)
{
isDuplicate = true;
}
if (user.Email == email)
{
isDuplicate = true;
}
if (user.SoDienThoai == sodienthoai)
{
isDuplicate = true;
}
if (user.CMND == cmnd)
{
isDuplicate = true;
}
}
var jsonData = new { isDuplicate };
return(Json(jsonData, JsonRequestBehavior.AllowGet));
}