//  4.Function : Update : TYPE bool
 /// <summary>
 /// Function : fncUpdate(clsDirectorAgency director) -> updates a Director in the Director Agency list.
 /// </summary>
 /// <param name="agency">clsDirectorAgency director</param>
 /// <returns>ListDirectorAgency.Add(director.vNumber, director) or false</returns>
 public bool fncUpdate(clsDirector director)
 {
     if (ListDirectors.ContainsKey(director.vNumber))
     {
         ListDirectors.Remove(director.vNumber);
     }
     ListDirectors.Add(director.vNumber, director);
     return(true);
 }
 //  3.Function : Add : TYPE bool
 /// <summary>
 /// Function : fncAdd(clsDirector director) -> adds a Director in the Director list.
 /// </summary>
 /// <param name="agency">clsDirector director</param>
 /// <returns>ListDirectors.Add(director.vNumber, director) or false</returns>
 public bool fncAdd(clsDirector director)
 {
     if (!fncExist(director.vNumber))
     {
         ListDirectors.Add(director.vNumber, director);
         return(true);
     }
     else
     {
         return(false);
     }
 }