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Melvin
Melvin

Reputation: 897

Combine two List in C# using For Each

I have two list objects in c# as mentioned below

List A

[0]
    Count="0",
    CountType="0",
    InvTpeCode="DLX"
[1]
    Count="0",
    CountType="0"
    InvTpeCode="STD"

List B

[0]
    Count="2",
    CountType="17"
[1]
    Count="12",
    CountType="14"

I have tried using foreach to update list a value with list b values but unfortunately i am not able to bring the desired output.

Note : Both the list are of same size only

Upvotes: 3

Views: 1605

Answers (4)

Kris
Kris

Reputation: 512

a foreach-loop is unpractible here, i would do the following:

for(int i=0; i < A.Count(); i++) 
{
    A[i].Count = B[i].Count;
    A[i].CountType = B[i].CountType;
}

But keep in mind this will die hard if List A is longer than B.

Upvotes: 1

Ofir Winegarten
Ofir Winegarten

Reputation: 9365

If the lists are the same size then a for loop will be enough:

for (int i=0; i< A.Count();i++)
{
    A[i].Count = B[i].Count;
    A[i].CountType = B.CountType;
}

Upvotes: 2

M. Haverbier
M. Haverbier

Reputation: 383

First assure that the lists are the same size.

var index = 0;
foreach ( ObjA itemA in listA) {
  replaceValues(ObjA, listB[index]);
  index++;
}

The method replaceValues should then replace the properties of ObjA with the properties of the item from listB (with the same position). But I think it makes no sense to use an foreach here. A simple for-loop can be used - as you need the index of the current element anyway.

Upvotes: 0

fubo
fubo

Reputation: 46005

Instead of for-loop you can also use Zip

var result = A.Zip(B, (a, b) => new Item {
                             InvTpeCode = a.InvTpeCode,
                             CountType = b.CountType, 
                             Count = b.Count });

Upvotes: 5

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