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Editorial Team
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Asked: 2026-05-16T03:49:42+00:00

This code should convert the list of listType2s (list) to a list of type1s.

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This code should convert the list of listType2s (list) to a list of type1s. I feel the functionality is somewhat difficult to ascertain though.

I am looking to see alternative methods that are easier to read, yet concise, and brief.

        List<Type1> type1s = new List<Type1>();
        listType2s.ForEach(t => type1s.Add((new Type1(t))));
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1 Answer

  1. Editorial Team

    I generally agree with using LINQ for this sort of thing – but List<T> has had a ConvertAll method since .NET 2.0 which will actually be slightly more efficient (as it already knows the size):

    List<Type1> type1s = listType2s.ConvertAll(t => new Type1(t));

    I would probably use LINQ myself unless I had a particular reason not to, just because then it’s consistent with the rest of the code which would probably be using LINQ too.

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