public virtual void RaiseInvalidEntryEvent(ITnEntry entry)
 {
     if (OnInvalidEntry != null)
     {
         OnInvalidEntry(entry, "Invalid entry in list: " + entry.List.Name + ".");
     }
 }
 public bool IsValidEntry(ITnEntry entry, string ticker)
 {
     if (!IsFieldValid(entry, ticker.Trim().Length.ToString(), "0"))
     {
         return(false);
     }
     return(true);
 }
 private bool IsFieldValid(ITnEntry entry, string actual, string invalidValue)
 {
     if (actual == invalidValue)
     {
         RaiseInvalidEntryEvent(entry);
         return(false);
     }
     return(true);
 }