//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 = 0; i < listmodeler.Count - 1; i++)                    {                        for (int j = i + 1; j <= listmodeler.Count; j++)                        {                            if (i != j)                            {                                if (listmodeler[i].Modelid == listmodeler[i + 1].Modelid)                                {                                    listmodeler.Remove(listmodeler[i]);                                }                            }                        }                    }

 

//去掉重复数据                 for (int i = 1; i < lter.Count + 1; i++)                {                    int index = 0; //重复列数据标记                    for (int j = i + 1; j < lter.Count() + 1; j++)                    {                        //此处判断重复列                        if (lter[i - 1].OrderID == lter[j - 1].OrderID)                        {                            index++;                            //此处做相应的操作                            lter.Remove(lter[i - 1]);                        }                    }                    //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 == 0)                    {                    }                }

 

//定义一个类继承IEqualityComparer接口  public class OrderComparer : IEqualityComparer
      
               {            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();