CODEWITHSUNDEEP
c#.net
mHelpMe
mHelpMe

Reputation: 6668

Adding section of one list to another list

I have a two lists, A & B. B contains say 100 elements. How do I add the 20th - 30th elements to list A from B. I know there is the AddRange but to me that looks like it would add all the elements from list B to list A. Is there a way to do this without using a loop?

Upvotes: 1

Views: 73

Answers (2)

Sajeetharan
Sajeetharan

Reputation: 222722

You could use GetRange() To get the elements from List A and then AddRange() to add the elements to List B if they are of same type.

For example: 

        List<int> a = new List<int>();
        List<int> b = new List<int>();
        for (int i = 0; i < 100; i++)
        {
            b.Add(i);
        }
        List<int> sublist = a.GetRange(20, 10);
        a.AddRange(sublist);

Upvotes: 3

Grant Winney
Grant Winney

Reputation: 66499

Assuming both lists have the same underlying type, you can use LINQ's Skip() and Take() methods to get the range of items you want from the second list:

var a = new List<string>();
// add 100 elements to a

var b = new List<string>();
// add 100 elements to b

a.AddRange(b.Skip(19).Take(11));  // add items 20 through 30 from b to a

Upvotes: 6

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