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Home/ Questions/Q 8025709
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Editorial Team
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Editorial Team
Asked: June 4, 20262026-06-04T23:15:09+00:00 2026-06-04T23:15:09+00:00

In my Windows 8 app written using Visual Studio 11 Express Beta, I cannot

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In my Windows 8 app written using Visual Studio 11 Express Beta, I cannot use the ArrayList. Here is my code:

using System.Collections;


ArrayList al = new ArrayList();

Compiler error:

The type or namespace name ‘ArrayList’ could not be found (are you missing a using directive or an assembly reference?)

Is this something new? I love ArrayLists 🙂

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  1. Editorial Team
    Editorial Team
    2026-06-04T23:15:12+00:00Added an answer on June 4, 2026 at 11:15 pm

    For WinRT, they took out all of the non-generic collections – it’s faster and makes your code more reliable. Use List<T> instead.

    ps… this will not be your last time saying “why the heck did they take away that API?” while migrating to WinRT

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