MVC Remote Validation

[Required]

[Display(Name = "Name")]

[StringLength(50, MinimumLength = 2, ErrorMessage = "Min 2 - Max 50 Characters only.")]

[Remote("CheckDuplicateName", "Employee", AdditionalFields = "EmpId,DeptId", ErrorMessage = "Name Already Exists.")]

[DisplayFormat(HtmlEncode = true)]

public string CName { get; set; }

[CustomAuthorize]

public JsonResult CheckDuplicateName()

{

var Ename = Request.QueryString[0];

var EId = Request.QueryString[1].ToInt();

var DId = Request.QueryString[2].ToInt();

var res = EmpBL.CheckDuplicateName(Ename, EId, DId);

return Json(res, JsonRequestBehavior.AllowGet);

}

public static bool CheckDuplicateName(string Name, int? EmpId, int deptId)

{

bool isunique = true;

var deptId = TraBL.GetdeptId(deptId);

var cName = Name.Replace(System.Environment.NewLine, string.Empty).ToLower().Trim();

using (var entity = new ACDataEntities())

{

var result = (from c in entity.Employees

where c.deptId == deptId

&& c.tbl_Dept.DNAME.ToLower().Trim() ==  Name

select c).FirstOrDefault();

if (result != null)

{

isunique = false;

}

}

return isunique;

}