using System.Collections.Generic; using HandyControl.Data; namespace HandyControl.Tools; public class DateTimeRangeComparer : IComparer { public int Compare(DateTimeRange x, DateTimeRange y) { if (x.Start > y.Start && x.End > y.End) return 1; if (x.Start < y.Start && x.End < y.End) return -1; return 0; } }