无法合并2个列表并形成带有两年标记c#linq的主列表

我有一个清单，清单1

CurrentYearDate    Marks1   LastYearDate    Marks2         
09/01/2012         200       
09/02/2012         10        
09/03/2012         30
09/04/2012         40       

CurrentYearDate    Marks1   LastYearDate    Marks2         
09/01/2012         200      9/01/2011         10
09/02/2012         10       09/02/2011        10
09/03/2012         30       09/03/2011        30
09/04/2012         40       09/04/2011        40

我有一张清单和清单2

CurrentYearDate    Marks1   LastYearDate    Marks2         
                            9/01/2011         10
                            09/02/2011        10
                            09/03/2011        30
                            09/04/2011        40

我需要将这两个列表合并到一起 我有一个清单，清单1

CurrentYearDate    Marks1   LastYearDate    Marks2         
09/01/2012         200       
09/02/2012         10        
09/03/2012         30
09/04/2012         40       

CurrentYearDate    Marks1   LastYearDate    Marks2         
09/01/2012         200      9/01/2011         10
09/02/2012         10       09/02/2011        10
09/03/2012         30       09/03/2011        30
09/04/2012         40       09/04/2011        40

---

如果索引按照您的示例排列，使每个列表中的第一项彼此对应，那么您可以使用

Zip

：

var mergedLists = list1.Zip(list2, (a,b)=> new YourClassName()
    {
        CurrentYearDate = a.CurrentYearDate,
        Marks1 = a.Marks1,
        LastYearDate = b.LastYearDate,
        Marks2 = b.Mark2,
    });

如果索引不对应，则需要使用

Join

：

var joinedLists = list1.Join(list2, curr => curr.CurrentYearDate, last => last.LastYearDate.AddYears(1), (a,b)=> new YourClassName()
    {
        CurrentYearDate = a.CurrentYearDate,
        Marks1 = a.Marks1,
        LastYearDate = b.LastYearDate,
        Marks2 = b.Mark2,
    });