c# Linq Lamba expression

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C#

LINQ

C#4.0

Hi,
I have a list with contains a list1 of Obj{name,dep,age,Id,dateofJoin,Location}.
now i have another list2 which conatins some updated data like {dateofJoin,Location}

so, i want to update the Lis1{dateofJoin,Location} with list2{dateofJoin,Location}
I am using Lamba expression but i am not able to update 2 fields at a1 time.

Any suggestion plz help!