compare two list and change value with linq

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i have 2 list like this

First list

code      name     number
1         name1      50
2         name2      6
3         name3      12

Second list

code      number   case
1         1          1
2         1          2
1         1          1
1         1          1
3         1          1

i want list 2 compare on list1 and if code is 1 check case , if case eql 1 from number list 1 -- else number ++ i want use linq but i dont know what to do finaly list after procces (list 1 and 2 is diffrent ienurable)

code      name     number
1         name1      47
2         name2      7
3         name3      11

asked 33 secs ago

moon_3

1

compare two list and change value with linq