C# 两个列表取交集并集差集，比较复杂对象列表

public class PosSaleReportDataShopComparer: IEqualityComparer<PosSaleReportData>
{
    private double dayDiff=365;
    public PosSaleReportDataShopComparer(double day)
    {
        dayDiff = day;
    }
    public bool Equals(PosSaleReportData x, PosSaleReportData y)
    {
        try
        {

            var result1 = x.ShoppeCode == y.ShoppeCode;
            var second = Math.Abs((x.JzDate - y.JzDate.AddDays(dayDiff)).TotalSeconds);
            var result2 = Math.Abs((x.JzDate - y.JzDate.AddDays(dayDiff)).TotalSeconds) < 1|| Math.Abs((y.JzDate - x.JzDate.AddDays(dayDiff)).TotalSeconds) < 1;
            if(result1&&result2)
            {
                if(x.JzDate>y.JzDate)
                {
                    x.LSsTotal = y.SsTotal;
                    x.Area = y.Area;
                    x.AreaAverage = y.AreaAverage;
                }
                else
                {
                    y.LSsTotal = x.SsTotal;
                    y.LArea = x.Area;
                    y.LAreaAverage = x.AreaAverage;
                }
            }
            return result1&&result2;
        }
        catch (Exception ex)
        {
            return base.Equals(x);
        }
    }
    public int GetHashCode(PosSaleReportData obj)
    {
        return obj.ShoppeCode.GetHashCode();
    }
}

写一个继承IEqualityComparer接口的类PosSaleReportDataShopComparer，然后再调用Intersect方法时传入该类： list1.Intersect(list2, new PosSaleReportDataShopComparer()).ToList()