list泛型集合去除重复项，对于单一的某个字段非常简单，但是对于一些自定义要求的还需自定义规则。

例子代码：

/************绑定乘客信息********/List
     
       passengerList = (List
      
       )list[5];//去除重复旅客List
       
         newpassengerList = passengerList.Distinct(new TktPassengersComparer()).ToList() ;rptCustomer.DataSource = newpassengerList;rptCustomer.DataBind();
       
      
     

/// 
    /// 去除旅客重复    /// 
    public class TktPassengersComparer : IEqualityComparer
     
          {        public bool Equals(RT.Model.TktPassengers t1, RT.Model.TktPassengers t2)        {            return (t1.PsrName == t2.PsrName && t1.CardNo == t2.CardNo);        }        public int GetHashCode(RT.Model.TktPassengers t)        {            return t.ToString().GetHashCode();        }    }