private void detach_BandWidth(BandWidth entity)
		{
			this.SendPropertyChanging();
			entity.PC = null;
		}
		private void attach_BandWidth(BandWidth entity)
		{
			this.SendPropertyChanging();
			entity.PC = this;
		}
 partial void UpdateBandWidth(BandWidth instance);
 partial void DeleteBandWidth(BandWidth instance);
 partial void InsertBandWidth(BandWidth instance);