Strong-Typed Collection

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Is there such a thing in .NET 2.0 as a Strong-Typed Collection? Something
where I can define the object type that can be added to the collection, and
also so that, somehow, at compile-time, I don't have to cast the item to the
desired Object Type?

Thanks.

Alex
 
Hi Alex,

Yes, .NET 2.0+ has generic collections:
msdn2.microsoft.com/en-US/library/system.collections.generic.aspx
msdn2.microsoft.com/en-us/library/ms172181.aspx

E.g. List<int> - the list only integers

Regards, Alex
[TechBlog] http://devkids.blogspot.com
 
Hi Alex,

..NET 2.0 has introduced a lots of strong-typed collections. They all reside
in the System.Collections.Generic namespace.

I usually use the List<T> when I need a strong-typed collection. We can add
any object that is of the specified type T or is derived from the type T to
a List<T> collection, without having to cast the object to the desired
object type.

The following is a sample.

class BaseClass
{...}
class DerivedClass : BaseClass
{...}

BaseClass obj1 = new BaseClass();
DerivedClass obj2 = new DerivedClass();

List<BaseClass> lists = new List<BaseClass>();
lists.Add(obj1);
lists.Add(obj2);

Hope this helps.
If you have any question, please feel free to let me know.


Sincerely,
Linda Liu
Microsoft Online Community Support

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