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Editorial Team
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Asked: 2026-06-17T09:30:13+00:00

This is my code: List<string> l1 = new List<string> { a, b, c };

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This is my code:

List<string> l1 = new List<string> { "a", "b", "c" };
List<string> l2 = new List<string> { "x", "y", "z" };
foreach (var item in l1)
{
    item = MyFunction(item);
}
foreach (var item in l1)
{
    item = MyFunction(item);
}

Is there a way to iterate both the Lists in a single foreach statement ?

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1 Answer

  1. Editorial Team

    Assuming the type of the List objects are the same you can use Concat.

    foreach (var item in l1.Concat(l2))
{
    item = MyFunction(item);
}
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