public bool create_hoatdongnckh([FromBody] Tblhoatdongnckh nc)
 {
     using (sql_NCKHContext db = new sql_NCKHContext())
     {
         try
         {
             db.Tblhoatdongnckhs.Add(nc);
             db.SaveChanges();
             return(true);
         }
         catch (Exception)
         {
             return(false);
         }
     }
 }
 public bool delete_hoatdongnckh(int id, [FromBody] Tblhoatdongnckh nc)
 {
     using (sql_NCKHContext db = new sql_NCKHContext())
     {
         try
         {
             Tblhoatdongnckh kh = db.Tblhoatdongnckhs.SingleOrDefault(x => x.Id == id);
             if (kh == null)
             {
                 return(false);
             }
             db.Tblhoatdongnckhs.Remove(kh);
             db.SaveChanges();
             return(true);
         }
         catch (Exception)
         {
             return(false);
         }
     }
 }
 public bool edit_hoatdongnckh(int id, [FromBody] Tblhoatdongnckh nc)
 {
     using (sql_NCKHContext db = new sql_NCKHContext())
     {
         try
         {
             Tblhoatdongnckh kh = db.Tblhoatdongnckhs.SingleOrDefault(x => x.Id == id);
             if (kh == null)
             {
                 return(false);
             }
             kh.Tenhdnckh   = nc.Tenhdnckh;
             kh.Dinhmuc     = nc.Dinhmuc;
             kh.Dmhtkinhphi = nc.Dmhtkinhphi;
             kh.Ghichu      = nc.Ghichu;
             kh.Idloaihd    = nc.Idloaihd;
             return(true);
         }
         catch (Exception)
         {
             return(false);
         }
     }
 }