public void Clear(bool RaiseChangedEvent)
 {
     if (RaiseChangedEvent)
     {
         GuildHalls.Clear();
     }
     else
     {
         guildHalls.Clear();
     }
 }
 public void UpdateFromModel(GuildHallsInfo Model, bool RaiseChangedEvent)
 {
     if (RaiseChangedEvent)
     {
         GuildHalls.Clear();
         foreach (GuildHall obj in Model.GuildHalls)
         {
             GuildHalls.Add(obj);
         }
         IsVisible = false;
     }
     else
     {
         guildHalls.Clear();
         foreach (GuildHall obj in Model.GuildHalls)
         {
             guildHalls.Add(obj);
         }
         isVisible = false;
     }
 }