How custom remote validation errormessage in mvc 5? - validation

Question

[System.Web.Mvc.Remote("CheckIdCard", "Lockers", ErrorMessage = "This Id Card have been used, Locker id is {0}{1}{2}")]
[MaxLength(18)]
public string IdCard { get;set;}
IF id Card have been exist in database, then client will show this record's id.
which method i should override ???
public class CustomErrMsgRemoteAttribute : System.Web.Mvc.RemoteAttribute, IClientValidatable
{
public override string FormatErrorMessage(string name)
{
return base.FormatErrorMessage(name);
}
//public override
}
[OutputCache(Location = OutputCacheLocation.None, NoStore = true)]
public JsonResult CheckIdCard(string IdCard)
{
bool isValidate = false;
string val=string.empty;
var locker = db.Lockers.Where(l => l.IdCard == IdCard).FirstOrDefault();
if (locker==null)
{
isValidate = true;
}
else
{
string val=locker.Id;
}
// retrun this locker.id in errormessage;
return Json(isValidate, JsonRequestBehavior.AllowGet);
}
I don't know how to write these code, thanks.

Answer 1

Place this in your metadata file or model class
[RemoteAttribute("IsRegionCodeExists", "Region",ErrorMessage="Region Code exists,
public string RegionCode { get; set; }
NOW IN THE CONTROLLER
//
// GET: /Region/
public JsonResult IsRegionCodeExists(string RegionCode)
{
return IsExist(RegionCode) ? Json(true, JsonRequestBehavior.AllowGet) : Json(false, JsonRequestBehavior.AllowGet);
}
public bool IsExist(string RegionCode)
{
var _model = (from s in db.Regions
where s.RegionCode == RegionCode
select s.RegionCode).FirstOrDefault();
if (string.IsNullOrEmpty(RegionCode)) return false;
else if (_model!=null)
return false;
else return true;
}