using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing.Design; using System.Linq; using System.Text; using System.Threading.Tasks; using static System.ComponentModel.TypeConverter; namespace Yw.WinFrmUI.Q3d { [Serializable] public class MeterViewModel : NodeViewModel { public override string ToString() { if (string.IsNullOrEmpty(PatternID)) PatternID = ""; return $"{ID}\t{Z}\t{Demand}\t{PatternID}\t;\t"; } } }