c# 如何中List<object>中去掉object对象中的重复列数据?

//去掉重复
var title = modelList.GroupBy(m => m.Title.ToLower().Trim()).Select(m => new { ID = m.FirstOrDefault().ID });
            modelList = modelList.Where(m => title.Select(mo => mo.ID).Contains(m.ID)).ToList();
            foreach (var item in modelList)
            {
                Console.WriteLine(item.ID + "\t" + item.Title);
            }

   for (int i = ; i < listmodeler.Count - ; i++)
                    {
                        for (int j = i + ; j <= listmodeler.Count; j++)
                        {
                            if (i != j)
                            {
                                if (listmodeler[i].Modelid == listmodeler[i + ].Modelid)
                                {
                                    listmodeler.Remove(listmodeler[i]);
                                }
                            }
                        }
                    }

                //去掉重复数据
                for (int i = ; i < lter.Count + ; i++)
                {
                    int index = ; //重复列数据标记
                    for (int j = i + ; j < lter.Count() + ; j++)
                    {
                        //此处判断重复列
                        if (lter[i - ].OrderID == lter[j - ].OrderID)
                        {
                            index++;
                            //此处做相应的操作
                            lter.Remove(lter[i - ]);
                        }
                    }
                    //在一圈寻找结束后，判断，寻找的结果，根据结果来操作具体数据
                    if (index == )
                    {
                    }
                }

 //定义一个类继承IEqualityComparer接口
  public class OrderComparer : IEqualityComparer<ListOrder>
        {
            public bool Equals(ListOrder x, ListOrder y)
            {
                return x.OrderID == y.OrderID;
            }

            public int GetHashCode(ListOrder obj)
            {
                return obj.OrderID.GetHashCode();
            }
        }

 //调用：
 AListOrder = AListOrder.Distinct(new OrderComparer()).ToList();