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Asked: 2026-05-13T17:42:43+00:00

I have class Foo. Foo has a property of public string x. I would

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I have class Foo. Foo has a property of public string x.

I would like to instantiate Foo a few times as ONE and TWO, and add those instances to Hashtable Bar with keys 1 and 2 respectively. How do I obtain string x for the particular instance.

I’ve tried something to the like of: Bar[1].x, but the property x is not recognized.

What am I doing wrong?

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1 Answer

  1. Editorial Team

    You should be using Dictionary<int, Foo> instead of Hashtable. Hashtable is an obsolete class for the days we didn’t have generics. It stores key and values as object type. Dictionary<TKey,TValue>, on the other hand, is a strongly typed generic collection.

    If you want to use Hashtable for some reason (e.g. C# 1.0), you’ll have to cast the object:

     ((Foo)Bar[1]).x
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